Kingdom of Italy (1940-1943) Twin-engine maritime reconnaissance aircraft. Number built: 2 prototypes and 8 production aircraft
During the 1930s, Italian aviation made considerable strides, marked by the introduction of numerous new aircraft designs and technologies, such as all-metal air frames. However, not all of these designs were successful. Some, like the Ba.65 and Ba.88, ultimately proved to be failures, despite showing promise in their initial evaluations. However, a number would go on to prove incredibly successful despite troubled origins, with one notable example being the FIAT CR.25. In the late 1930s, FIAT proposed the development of a twin-engine fast bomber that could also serve in reconnaissance roles. After a fraught and meandering development cycle, only a small number of CR.25 were produced, they proved to be reliable and capable during the war.
The FIAT CR.25. Source: https://en.wikipedia.org/wiki/Fiat_CR.25
History
In 1936, FIAT approached the Italian Air Ministry with a proposal for a modern, light bomber. In addition to its primary role, they suggested that the aircraft could also serve as a reconnaissance platform. A FIAT representative assured the Ministry that the aircraft’s exceptional speed and robust defensive armament would enable it to excel in both roles, with a maximum estimated speed above 500 km/h.
The Air Ministry found the proposal promising and approved the project. As FIAT worked on developing the first prototype, the Air Ministry made an additional request: the aircraft should also be capable of fulfilling the role of a heavy fighter, alongside its initial design purposes.
In April 1937, a meeting was held between FIAT and Air Force representatives to discuss the overall characteristics of the aircraft. One key question was whether the aircraft should include a dedicated bombardier’s station or prioritize a more streamlined design. The precise details of the armament were also debated. After a series of discussions, it was agreed that the initial plan for four forward-mounted heavy machine guns would be reduced to three. Additionally, the rotating turret on the lower fuselage would either be removed or completely redesigned. Lastly, it was decided to retain the dedicated bombardier and observation position.
As work progressed, it was decided to remove the rear machine gun gondola to achieve a more aerodynamic shape and save weight. However, the project encountered its first major issue when the designers, despite all efforts, failed to reach the required maximum speed of 500 km/h. At best the prototype recorded a speed of 450 km/h. The Air Ministry began to lose interest in FIAT’s design, as the Breda Ba.88 appeared to be a more promising alternative. During its initial tests, the Ba.88 managed to achieve speeds exceeding 550 km/h.
Ironically, despite this promising start, the Ba.88 turned out to be a disastrous design, with only a few aircraft ever seeing combat. Further testing of the Ba.88 revealed additional flaws, raising concerns among the Italian Air Force’s leadership. As a precaution, FIAT was granted permission to prepare for the production of 40 of their twin-engine bombers, which were then designated as the CR.25.
The production order was issued before the first prototype was even fully completed. This prototype, designated MM.332, underwent flight testing in July 1937, followed by extensive flight and endurance trials. Meanwhile, work on the second prototype, designated MM.333, and the first aircraft from the production order, was slowly progressing. However, before any of them could be fully completed, the situation surrounding the aircraft changed dramatically.
In the late 1930s, as tensions in Europe rose and the prospect of a new war loomed, the Italian Air Ministry began selecting aircraft for mass production. They carefully evaluated each design to determine its intended role and operational performance.
The FIAT CR.25 first prototype registered as MM.332. Source: https://en.wikipedia.org/wiki/Fiat_CR.25
A debate emerged regarding the future of the CR.25. Despite its promising overall performance, the aircraft failed to meet the required maximum speed, a flaw considered critical in its design. The earlier decision to reduce its bombload had also already cast doubt on its viability as a fast bomber. Furthermore, its initial intended role as a fast heavy fighter had also been abandoned. In essence, the Air Ministry was inclined to terminate the project.
However, with approximately 40 units already in production, halting construction entirely would have resulted in wasted time, resources, and production capacity. In order to make good on the cost of producing these planes, the CR.25 was repurposed in 1938 as a dedicated reconnaissance aircraft, instead of a fast bomber.
This new role also presented challenges. The Air Ministry first wanted to properly evaluate the aircraft’s suitability for reconnaissance missions. Additionally, there was a shortage of suitable engines, and introducing another aircraft into service risked further straining the already limited supply of critical engine components.
Trials of the CR.25 were conducted alongside a modified Ba.88, and a Caproni Ca.312. During these evaluations, the Ba.88 was quickly dismissed due to persistent mechanical issues. While the Ca.312 was not without its flaws, it was ultimately favored for the reconnaissance role.
Production
In August 1939, a decision was made to scale back the CR.25 production order to just eight aircraft, in addition to the two existing prototypes. The remaining 32 units were canceled, with the incomplete airframes being set aside for replacement parts.
The A.74 engines were also salvaged from incomplete aircraft, as new engines would not be available for the production line. The final CR.25 from the initial order of eight aircraft was completed in early 1940.
Despite the initial order for 40 aircraft of this type, only 8 were ever fully completed beside the two prototypes. Source: https://comandosupremo.com/fiat-cr-25/
Sources slightly disagree on the exact number of aircraft built. The previously mentioned production figures are based on G. Apostolo’s (FIAT CR.25). However, other sources, such as D. Nešić (Naoružanje Drugog Svetskog Rata – Italija), suggest that a total of 12 aircraft were produced.
In Service
The 10 available CR.25 aircraft were allocated to the 173rd Squadriglia (Eng. Squadron), and the two prototypes were used as training aircraft. The personnel assigned to equip this unit were drawn from the 31st and 35th Stormi B.M. (Eng. Maritime Bombing Wing). For most of 1940, the unit saw no operational use. It was not until 1941 that the squadron began intensive training for its pilots and crew. Aircrew training was conducted in Turin, while ground personnel were stationed at Palermo-Boccadifalco.
Pilot training officially began in April 1941, but problems arose almost immediately. The most significant issue was that the pilots selected for this unit had only flown maritime aircraft and lacked experience with land-based planes. Another major challenge was the absence of suitable training aircraft with dual controls, which slowed the entire process considerably. Matters were further complicated when one of the prototypes caught fire during a training flight. Fortunately, the pilots and crew managed to bail out in time, but the aircraft crash-landed and was destroyed.
The first prototype was lost in an accident when the aircraft caught fire and crash-landed. Both the pilot and the passenger survived the incident as they managed to escape the plane in time. Source: G. Apostolo FIAT CR.25
By July 1941, only four aircraft and their respective crews were considered trained and ready for frontline deployment. The squadron’s first operational missions, primarily submarine reconnaissance flights, began later that month. On 25th July, four additional CR.25 aircraft arrived at the base in Palermo-Boccadifalco.
These eight aircraft saw extensive use throughout 1941 and early 1942. Despite their limited numbers, they were employed in wide-ranging reconnaissance and escort missions over the Mediterranean. However, three aircraft were sent to be scrapped after suffering damage in landing accidents that rendered them irreparable.
In 1940, only eight CR.25 aircraft were produced, and deployed for frontline use as maritime reconnaissance aircraft. Source: https://comandosupremo.com/fiat-cr-25/
From February 1942 onward, the 173rd Squadriglia was permanently attached to the 10th Stormo, operating out of the same base. This unit included SM.79 and Ca.314 aircraft in its inventory. On 6th February, the first recorded action involving the CR.25 against enemy aircraft took place. One of the 173rd’s CR.25s intercepted a British Blenheim bomber during a patrol. The bomber, heavily damaged during the encounter, was subsequently shot down by a German Bf 109.
On 21st June, two CR.25s were conducting an escort mission for an Axis convoy. During the mission, Allied aircraft attacked the convoy. The CR.25s managed to shoot down two enemy planes, while three more were downed by the convoy’s destroyer escort.
By October, the combination of landing accidents and a lack of spare parts meant that only three CR.25 aircraft remained operational. To prevent the unit’s disbandment, additional Ca.314 aircraft were assigned as replacements. However, these planes were poorly received by the pilots due to their inferior performance compared to the CR.25.
By 1943, the chronic shortage of spare parts effectively marked the end of the CR.25’s operational service life. The aircraft’s last recorded patrol occurred in mid-January 1943. The remaining four planes were subsequently withdrawn from service and placed in storage, likely awaiting scrapping.
Berlin Attaché Transport CR.25
Interestingly, one of the eight procured CR.25 aircraft found its way into service as the personal transport of the Italian military attaché in Berlin. Visually, it differed from the remaining aircraft by lacking the glazed nose typically seen on the model. Additionally, the interior was extensively modified to suit its specialized mission.
The first production aircraft was repurposed for military use as a transport aircraft, primarily serving to ferry politicians and ambassadors between Italy and Germany. Although it was essentially the same model as the original design, it lacked the glass-enclosed nose section. Source: https://www.vvsregiaavions.com/RegiaHTML/rcr252.htm
The redesigned interior featured seating for four passengers and dual controls. This aircraft was actively used by the Italians during the war. However, after the Italian capitulation in September 1943, it was seized by the Germans. They temporarily repurposed it as a training aircraft, but its service ended once spare parts became unavailable.
Some sources have referred to this aircraft as the CR.25A, though there is no evidence to suggest that the Italians officially used this designation.
Technical characteristics
The CR.25 fuselage was constructed using four tubular longerons, secured by a combination of crossbars, braces, and diagonal metal tubes. These components were assembled into three sections to form the complete fuselage. The wings and tail units were built using a similar construction method. However, unlike the fuselage, which was entirely made of metal, the tail and wing surfaces were covered with fabric.
The cockpit was located directly behind the aircraft’s nose and accommodated the pilot’s position. To the pilot’s right was the position originally intended for the bombardier. However, as the aircraft was rarely used in a bombing role, the second crew member performed various other tasks, such as navigation, observation, operating the radio, and managing the onboard camera. In practice, the second crew member was often overburdened with multiple responsibilities.
For observation and other tasks, the second crew member could use the cockpit’s side windows or the lower section of the nose, which was glazed to provide a clear view of the area below. Interestingly, the Italians incorporated an auxiliary control stick located behind the pilot. This allowed the second crew member to partially operate the aircraft if the nose sustained severe damage or if the pilot was incapacitated.
The lower part of the CR.25’s nose was enclosed in glass, allowing the crew members tasked with identifying targets for bombing runs to have a clear view. Source: G. Apostolo FIAT CR.25Close up view of the CR.25 cockpit command board. Source: https://www.vvsregiaavions.com/RegiaHTML/rcr252.htm
The CR.25 was powered by two 840-horsepower FIAT A.74 RC.38 engines, each paired with 3-meter-long FIAT automatic pitch propellers. The aircraft’s fuel load consisted of 1,600 liters, distributed among six smaller fuel tanks located in the wings. These tanks were protected by armored plating, offering protection against weapons up to 12.7 mm caliber.
The primary armament included two 12.7 mm SAFAT heavy machine guns mounted in the aircraft’s nose. For defense against enemy aircraft, another heavy machine gun was positioned in a small, rotating Breda Type M.2 turret located on the rear upper fuselage. This turret was operated by a third crew member.
The fuselage of the CR.25 featured a small bomb bay capable of carrying up to 300 kilograms of bombs, though this capacity may vary according to different sources.
The CR.25 armament consisted of two nose-positioned and one in the rear turret 12.7 mm heavy machine guns. Source: https://comandosupremo.com/fiat-cr-25/
Conclusion
Unlike a number of Italian aircraft that failed to live up to their expectations, and were produced in limited numbers, the CR.25 stood out as a success despite its short service life and limited production run. While it was certainly no extraordinary aircraft by any measure, it performed well in its intended role, and despite being produced in relatively small quantities, it saw significant use in the Mediterranean theater, and was favored by its crews over other comparable aircraft.
Though never employed as a bomber, the CR.25 was predominantly used as a reconnaissance aircraft with great success. Remarkably, no aircraft of this type was ever shot down by the enemy. By 1943, however, they ran out of spare parts, which effectively marked the end of the CR.25’s long service career.
Operators
Kingdom of Italy – Operated 10 aircraft
Germany – Briefly operated the one captured aircraft for training purposes
Kingdom of Hungary (1943) Reconnaissance aircraft – Over 28
During the Second World War, Hungary aligned itself with the Axis powers, and in 1941, they dispatched their armed forces to support the German invasion of the Soviet Union. Initially, the Hungarian Army, particularly its Air Force, was poorly equipped for this conflict and lacked many vital military resources, particularly modern weapons and aircraft. For example, its Air Force had to conduct tactical reconnaissance using obsolete biplane aircraft. In 1943, to support their ally, the Germans supplied a small group of the modern Fw 189 reconnaissance aircraft to the Hungarians. Although these aircraft were limited in number, they saw extensive action until the end of the war.
Hungarian-operated Fw 189. Source: G. Punka Focke-Wulf Fw 189 in Action
History
Despite many attempts to improve its Air Force during the 1930s, Hungary faced numerous obstacles that hindered its progress. The most significant challenge were the restrictions on developing certain military technologies, including aircraft, imposed by the Treaty of Trianon in June 1920. Although the geopolitical landscape in Europe had changed considerably by the 1930s, rendering the Western Allies incapable of enforcing this ban, it did little to assist Hungary. The country simply lacked the financial resources and could not find any potential sources from which they could purchase a large number of new aircraft from.
As a result, the Hungarian Air Force had to rely on the Weiss Manfred WM 21 Sólyom, a biplane developed domestically in the late 1930s, for reconnaissance operations. Fewer than 130 of these aircraft were built. To supplement the WM 21, Hungary acquired the Heinkel He 46 from Germany. However, by the time Hungary entered the war with the Soviet Union in 1941, both aircraft were clearly obsolete. Nevertheless, with no better alternatives available, they had to continue in their reconnaissance roles.
The Weiss Manfrédfrom WM 21 two-seat reconnaissance aircraft. Source: lasegundaguerra.com
By 1943, it had become clear to Hungarian Air Force officials that the two aging aircraft in their fleet needed to be replaced. With limited options available, they turned to the Germans for assistance. At that time, Germany was deeply entangled in the conflict with the Soviet Union and was in desperate need of support from its allies. Realizing the necessity of keeping Hungary well-equipped in the fight against the Soviets, the Germans agreed to supply a small contingent of the well-known Focke-Wulf Fw 189 reconnaissance aircraft to reequip the Hungarian forces.
A Brief Fw 189 History
The history of the Fw 189 dates back to 1937, when the German Ministry of Aviation initiated the development of a new tactical reconnaissance aircraft. The role of the aircraft was to survey the front line, and carry out army liaison duties. One of the companies that responded to this competition was Focke-Wulf, which presented the Fw 189. This aircraft won the contract, leading to a production order that began in 1940. The Fw 189 was a twin-engine aircraft with a heavily glazed central fuselage which gave its crew excellent visibility. It was well-liked in service and generally performed well, with most of them being employed on the Eastern Front. By the time production ended in 1944, some 900 of these aircraft had been built.
The German Focke-Wulf Fw 189. Source: Wiki
Operational Service Life
While the Fw 189 aircraft were allocated to the Hungarian Air Force, they operated under German command. This was not irregular; in fact, to better coordinate their efforts, large parts of the engaged Hungarian Air Force were placed under German operational control. In May 1943, Germany supplied the Hungarians with a group of 12 Fw 189A models, which were assigned to the 3rd Hungarian Flying Squadron under the command of Captain Lorand Telbisz. This squadron was subordinate to the German 4th Air Fleet.
The first aircraft operated from airfields near Harkow, where they undertook over 224 reconnaissance missions against Soviet forces. Some of these missions even targeted Soviet partisans in the Pripet Marshes. During one of these operations, the Hungarians lost their first Fw 189, when it was shot down in late May.
The aircraft also saw heavy action during the Battle of Kursk, performing reconnaissance missions and, in many instances, conducting light bombing attacks against enemy forces. However, with the failure of the German offensive, the Hungarian forces were forced to retreat as well.
The Fw 189 was the first Hungarian modern reconnaissance aircraft, employed first in 1943. Source: G. Sarhidai, G. Punka, and V. Kozlik Hungarian Eagles
In September 1943, a lone Hungarian Fw 189 achieved remarkable success against Soviet fighters. On the 21st, during a reconnaissance mission, the Hungarian Fw 189 was engaged by a group of three Yak-9 fighters. To evade the enemy, the Fw 189 pilot descended sharply, making abrupt turns. Despite intensive enemy fire, the rear gunner managed to shoot down one of the fighters. A second Soviet fighter was lost when its pilot misjudged his altitude and crashed into the ground. The last surviving fighter disengaged and retreated. While the Fw 189 lacked for a heavy defensive armament, its spindly form and exceptional maneuverability made it a difficult target for interceptors, when an experienced pilot was at the controls.
Later that same day, another Fw 189 was attacked by at least six La-5 fighters. After extensive maneuvering and exchanging of fire, the rear gunner of the Fw 189 claimed two of the attackers. In both cases, the Fw 189s successfully returned to their bases.
During this period, the Germans added a few more aircraft to the unit to replace losses and worn-out planes. By the end of October 1943, the 3rd Flying Squadron had completed its 1,000th flight mission. However, while it remained active until the end of the year, a lack of fuel and spare parts greatly reduced the number of operational flights. By March 1944, the unit had only one operational aircraft left. That same month, the unit was officially disbanded, and the surviving personnel were sent back to Hungary.
Despite the small number operated, the Fw 189 saw extensive use by the Hungarian military. By the end of October 1943, the 3rd Flying Squadron had completed its 1,000th flight mission. Source: G. Punka Focke-Wulf Fw 189 in Action
The story of the Fw 189 in Hungarian service did not end there. In April 1944, the 4th Reconnaissance Squadron was relocated to Hungary and stationed at Bydgoszcz. The squadron’s crew underwent training in night reconnaissance operations, which were completed by May. Following their training, the unit engaged in extensive action on the Eastern Front, ranging from Poland to Hungary. They remained active on the frontline until September, when it was disbanded. Following the unit’s dissolution, the surviving aircraft were returned to the Germans. While the exact number of Fw 189s operated by this unit is unclear, they are known to have lost between 10 and 11 aircraft of this type to all causes. This marked the end of the Fw 189’s service within the Hungarian Air Force.
It is not clear precisely how many aircraft of this type were operated by the Hungarians. Author G. Punka (Hungarian Air Force) places the number of 28 aircraft of this type, while in another book, Hungarian Eagles, written by Sarhidai, G. Punka, and V. Kozlik, a figure of 21 is given. While most of these received Hungarian Air Force markings, many of them retained the original German markings, which makes identification somewhat confusing, likely contributing to this ambiguity.
After 1943, the Fw 189 would still see service within the Hungarian Air Force but primarily for night reconnaissance operations. Source: https://old-forum.warthunder.com/index.php?/topic/490017-visegrad-group-aviation-tech-tree/page/3/
Technical Specification
The Fw 189 was designed as a twin-engine reconnaissance aircraft with a unique construction. Its central fuselage featured extensive glazing, with the cockpit at the front of the compartment, followed by a small crew area, and a gunner’s station at the rear. The fuselage was bulkier at the front and tapered toward the rear. Access to the crew area was provided through two hatches above the cockpit and a larger hatch at the rear. Although the extensive glazing left the crew more exposed to enemy fire, it was ideal for its reconnaissance role, offering excellent all-around visibility.
The wings are composed of two distinct sections. The central, square-shaped panel connects the nacelle and engines, while the second section extends outward from the booms. The wings feature a metal base covered with duralumin, though the ailerons and split flaps are clad in fabric.
The aircraft was powered by two 465 hp Argus As 410 A-1 12-cylinder air-cooled V-12 engines. These engines demonstrated remarkable effectiveness and reliability, even under the harsh winter conditions of the Eastern Front. With these engines, the Fw 189 achieved a maximum speed of 335 km/h, though exact figures may vary between sources. Each engine drove a two-blade, constant-speed propeller. Fuel was stored in two 110-liter tanks, which were housed in the tail booms. The Fw 189 had a maximum operational range of approximately 670 km.
The landing gear consisted of two landing gear assemblies that retracted into the engine nacelles. The rear smaller tail wheel was located inside the vertical stabilizer and was retracted in flight. While nominally a reconnaissance aircraft, the aircraft could be armed with machine guns for strafing targets, and had four underwing shackles for bombs, or flares.
Conclusion
The Fw 189 was a well-designed aircraft that excelled in its intended role. Given its effectiveness, it’s no surprise that the Hungarians made extensive use of the few aircraft they were supplied with. These planes were deployed exclusively against the Soviets, primarily in 1943 and late 1944.
In the late 1930s, the British Royal Navy was in desperate need of a modern carrier-based fighter. No existing aircraft in the British inventory could effectively fulfill this role; fortunately, the aircraft manufacturer Fairey was developing a versatile light bomber. Upon closer examination, it became clear that this aircraft could be adapted for carrier operations. The result was the Fairey Fulmar, which entered service in 1940.
With little time or resources on hand as a new World War loomed, the Royal Navy’s need for a carrier-based fighter was the found in the Fairey Fulmar. (wikimedia)
History
By the late 1930s, Japan was expanding across Asia, and there were increasing signs that a new war in Europe was on the horizon. This prompted nations such as the United Kingdom to invest in new military developments, focusing on new weapons, aircraft, and nascent technological fields which might yield decisive advantages. The Royal Air Force (RAF) saw a surge of new aircraft designs, some of which would prove to be war-winning weapons, such as the Spitfire and Hurricane fighters.
In contrast, the British Royal Navy struggled to find a suitable fighter aircraft to protect its ships. Few existing designs met the requirements, and while some older designs still had some use left in them, like the venerable Gloster Gladiator, the need for modern fighters was becoming apparent. The main airborne threats were maritime patrol aircraft that could reveal the position of the Royal Navy’s fleets, but with rapid advancements in aviation happening year over year, new dangers were soon to emerge.
Ruggedness, endurance, and advanced navigational equipment were key aspects of carrier-based fighters, but for a short-legged, landbased day fighter, these design goals were secondary at best. As a result, the Royal Navy’s requirements for a new fighter prioritized long-range radio navigation equipment and a multi-crew design. While these additions reduced the aircraft’s speed, the trade-off was considered necessary for the sake of improved coordination and operational effectiveness. In addition, the new fighter needed to carry enough fuel for a flight of at least three hours.
Developing an entirely new design was likely to take years, and given the rising tensions in Europe, the Navy wanted a solution as soon as possible. Fortunately for them, the RAF had been experimenting with a high-speed light bomber concept. In response, several companies, including Fairey Aviation and Hawker Aircraft, submitted proposals, the Fairey P.4/34 and the Hawker Henley.
However, before either of these designs reached flight testing, the RAF abandoned the fast bomber concept altogether. The Navy, on the other hand, remained highly interested in a potential fighter based on the designs. Both aircraft demonstrated impressive speed and an endurance of over four hours, making them strong candidates for the naval fighter role the navy was seeking.
To further improve their options, a third aircraft, the Phillips and Powis M.9 Kestrel, was included in the evaluation as a private venture. However, as it was initially intended as a trainer, it lacked the long-range capabilities required for naval operations and was quickly rejected.
In January 1938, after meeting with representatives from the Air Ministry, it was suggested that the Navy select the Fairey entrant as the winner. This recommendation was not based primarily on overall performance, but rather on Hawker’s already overloaded production schedule. The company was heavily engaged in manufacturing the much-needed Hurricane fighter and could not afford to divert time and resources to another project.
After analyzing its limited options, the Navy agreed to the proposal but issued a series of requirements for the new fighter. Among these were an endurance of six hours at a speed of 220 km/h (138 mph) and three hours at 427 km/h (265 mph), all at an altitude of over 3,000 meters (10,000 feet). The aircraft’s armament was to consist of at least eight 7.62 mm (0.303 in) Browning machine guns. Navy officials determined that a rear-mounted machine gun would not be necessary. While not specifically intended for attacking enemy ships, the aircraft was to be capable of carrying two 113 kg (250 lb) bombs if needed.
A more significant requirement was that the fighter should be adaptable for floatplane operations, with the ability to be equipped with floats in the field by a four-man crew in a relatively short time. Additionally, the aircraft had to be built with a sufficiently strong structure to allow for carrier landings and catapult launches.
In February, representatives from the RAF and the Navy met to discuss the proposal further and refine the specifications. During these discussions, several additional modifications were agreed upon, including raising the canopy to improve visibility during landings, and the rear observer/navigator’s compartment was to be equipped with the necessary navigational instruments. If these requirements were met, production was estimated to begin in September 1939, with a planned output of 8 aircraft per month. The new fighter was designated as Fairey Fulmar.
In March 1938, Fairey was informed of the Navy’s request for a new fighter aircraft. After examining the details, Fairey’s engineers began assessing whether the necessary modifications could be made without compromising the aircraft’s performance. By May, they informed Navy officials that their P.4/34 prototype could be adapted for the role. Following this, Fairey received a production order for 127 aircraft. Interestingly, the contract did not include the construction of an additional P.4/34 prototype for testing.
However, the project came to a halt that same month. The main issue was that Fairey was already overwhelmed with other commitments. The P.4/34’s designer, Marcel J. O. Lobelle, was instead assigned to work on the Fairey Barracuda and Albacore torpedo bombers. With his focus diverted, he was unable to dedicate time to yet another project. Despite this setback, work on the fighter continued, albeit at a slow pace.
The Munich Crisis of September 1938, in which Britain and France negotiated the fate of Czechoslovakia with Germany, further heightened tensions in Europe. With the possibility of war increasing, the order for the new fighter was expanded to 250 aircraft. However, given the existing delays, Fairey informed Navy officials that production could not commence before March 1940, seven months later than originally intended. To compensate for lost time, the monthly production was to be increased to 25 aircraft and carried out at the newly constructed Stockport factory.
First Production Aircraft
During the spring of 1939, the P.4/34 prototype was modified and tested as a potential new fighter. Following its success, two more pre-production aircraft were completed in late 1939. The first of these underwent flight testing in January 1940, while the second was not tested until May of that year. The delay occurred because the designers wanted to evaluate the installation of the Rolls-Royce RM3M engine. However, despite this test, the production aircraft that were to be gradually introduced were to be powered by the Merlin VIII engine instead.
One of the five pre-production aircraft was used as a test prototype. (D. Brown Fairey Fulmar Mks I and II Aircraft Profile 254)
Testing of the first aircraft revealed that its performance was below expectations. It achieved a maximum speed of 410 km/h (255 mph), which was lower than intended, and its climb rate was also deemed insufficient. More importantly, its operational endurance was an hour below the originally promised six hours. The primary issue was that once armament and additional equipment were installed, the aircraft’s weight increased considerably, which negatively impacted its overall performance.
On the 6th of April 1940, the first production aircraft underwent flight testing at the Aeroplane & Armament Experimental Establishment in Boscombe Down, Wiltshire. The aircraft was described as pleasant to fly and highly responsive. However, much like the prototype, its performance was subpar compared to modern land-based fighters.
Further testing was conducted by No. 770 Squadron, a trial unit stationed at Lee-on-Solent Naval Air Station. The aircraft arrived at its unit on May 10, 1940—the same day Germany launched its invasion of Western Europe. There, it was used for takeoff and landing trials, both on solid ground and on a wooden dummy flight deck designed to simulate aircraft carrier runways.
In early June 1940, the aircraft underwent flight tests aboard the newly built HMS Illustrious. The Fairey Fulmar proved easy to land, thanks to its excellent forward visibility and responsive controls. However, during takeoff, pilots noticed a tendency for the aircraft to veer to the left.
Despite its mediocre capabilities, and with no viable alternative available, the Fairey Fulmar was put into production. Manufacturing began in April 1940, and between April and December of that year, approximately 159 aircraft of this type were built.
Despite the urgent need for such fighters, production was delayed. When it finally began, it began at a slow pace, meaning the aircraft were never available in significant numbers during the war. (https://hushkit.net/2020/03/24/fairey-fulmar-how-an-absurd-lumbering-thing-became-britains-top-scoring-naval-fighter/)
Improved Mk. II Model
As Fulmar production was underway, Fairey proposed an improved variant. Essentially, it was the same aircraft but powered by a 1,260 hp Merlin 30 engine. Additionally, it was estimated that the new model could have its weight reduced by approximately 160 kg (350 lb). Once approval was granted, Fairey modified one of its already-built Fulmar aircraft to create the prototype for the new version, designated as the Fulmar II (Mk. II). The prototype modification was completed by the end of 1940, and flight testing began after nearly a month. The conversion proved successful and straightforward, requiring no major retooling of the production process. As a result, manufacturing soon transitioned to the new Fulmar II. However, despite the more powerful engine, its overall performance saw only marginal improvement. The aircraft built using older airframes, but fitted with the new engine, were designated as Fulmar I/II. By February 1943, a total of 600 aircraft of both variants had been produced.
Night Fighter Role
When the war in Europe began, Britain was among the many countries that lacked a dedicated night fighter. By 1940, the situation had not improved significantly. In particular, night raids by the Italian Air Force inflicted damage on several British ships stationed in the Mediterranean. The Royal Navy’s Fulmar fighter was ill-equipped to counter these nighttime attacks, and naval officials requested Air Interception Radar Mk. VI sets from the RAF. However, the experiment proved disappointing, as the radar performed poorly at the low altitudes where anti-ship attacks were conducted.
From 1942 onward, the older Mark IV radar system replaced the Mk. VI. This upgrade involved installing three antenna masts on the wings and in front of the aircraft. Unfortunately, this installation further reduced the Fulmar’s already slow speed by an additional 32 km/h (20 mph). Due to these challenges, none of the 100 modified aircraft were deployed to the front lines until February 1944, and it remains doubtful whether they ever saw combat.
While the Fulmar failed in its night fighter role, approximately 50 aircraft were repurposed as night-fighter trainers, making up half of the originally modified night-fighter fleet.
Long-Range Reconnaissance Role
Beginning in April 1942, some Fulmars were tested with lightweight H/F W/T radio sets. The installation proved successful, leading to further modifications for use as long-range reconnaissance aircraft equipped with improved radio equipment. These aircraft were primarily deployed for extended patrols over the Indian Ocean.
In Combat
Northern Europe
As the first Fairey Fulmars entered service in 1940, Europe was already engulfed in war. The first operational unit to receive the aircraft was No. 806 Squadron. Initially, Fulmars operated from airfields in the UK, from which they were deployed to support the defense of Norway, and later played a role in the evacuation of Allied forces from Dunkirk. Their first assigned aircraft carrier deployment was aboard the newly commissioned Illustrious, beginning in August 1940.
Later in 1941, Fulmars were used to patrol, and escort convoys bound for the Soviet Union in the North Sea. While engagements with enemy fighters were rare, one notable encounter took place in late July 1941. During this engagement, a group of Fulmars intercepted German aircraft, resulting in the destruction of two Bf 109s and one Me 110. However, the Fulmars suffered losses as well, with two aircraft being shot down in the process.
Additional units were formed as more aircraft became available. Interestingly, some Fulmars from No. 804 Squadron were assigned to operate from Fighter Catapult Ships, escorting Atlantic convoys. These were actually modified merchant ships equipped with catapult rams. Once the fighter was launched, the pilot was to fly it until he ran out of fuel. After that, the pilot would use his parachute or ditch the aircraft in the path of a ship that could recover him.
While they were intended to function as carrier-based fighters, their early operational life saw them deployed from coastal airfields in the UK. (https://www.reddit.com/r/WeirdWings/comments/c2ivcq/fairey_fulmar/)
The last recorded sortie from an aircraft carrier occurred on the 8th of February 1945. On that day, a Fulmar night fighter was dispatched to intercept an enemy aircraft approaching a convoy destined for the Soviet Union. However, en route to its target, the Fulmar’s radar equipment malfunctioned, forcing the pilot to return to the carrier. During landing, the aircraft missed the arrestor wire and instead crashed into the safety barrier.
Mediterranean Theater of War
As production increased, additional units were formed. Such as No. 804 Squadron, which was assigned to operate Fulmars from merchant ships fitted with catapults, escorting Atlantic convoys. These vessels would launch the aircraft when an enemy target was identified. Between June and September 1940, this tactic saw limited use, with the Fulmars managing only to inflict minor damage on a German Fw 200 bomber. The Fulmars also participated in the hunt for the German Bismarck battleship but played a minor reconnaissance role.
Their combat service was primarily seen in the Mediterranean, and in September 1940, HMS Illustrious was deployed to that theater of war. At the time, the British Navy operating there lacked any form of fighter support. This role was then fulfilled by the 18 aircraft of No. 806 Squadron.
For the remainder of the year, the squadron was mainly tasked with targeting Italian reconnaissance aircraft and enemy bombers. Despite their limited numbers, they managed to shoot down 26 Italian aircraft by the end of 1940. This success was achieved by effectively coordinating their operations with Illustrious‘ radar system.
However, the situation changed drastically in 1941 when the German Luftwaffe arrived in greater numbers. Illustrious was heavily damaged, forcing No. 806 Squadron to relocate—first to Malta and then to Crete in February 1941. There, they were attached to another carrier, Formidable, and effectively merged with No. 803 Squadron.
The squadron continued operations from Formidable until May 1941, when the carrier was severely damaged by German attacks. By that time, the Fulmars had managed to shoot down at least 56 enemy aircraft, but these successes came at a cost—more than half of their already limited numbers were lost.
In April 1941, the aircraft carrier Ark Royal was tasked with protecting Gibraltar, supported by No. 807 and No. 808 Squadrons. These squadrons remained active until August 1941, when Ark Royal was sunk. Following its loss, No. 808 Squadron was disbanded, while No. 807 Squadron continued operating in the area. They were primarily assigned to patrol missions, occasionally engaging German submarines. In June, while conducting operations around Malta, they managed to shoot down five enemy aircraft but suffered the loss of three of their own. Afterward, they were redeployed to the United Kingdom.
During August 1942, No. 807 Squadron played a role in protecting a supply convoy to Malta. The British forces were supported by 18 Fulmars from No. 809 and No. 884 Squadrons. Between the 11th to 12th of August, intense battles with Axis fighters took place. The Fulmars successfully shot down at least two enemy aircraft but lost three of their own in the process.
On a few occasions, they also engaged Vichy French aircraft near Syria. In one such encounter, a group of Fulmars clashed with French D.520 fighters. Although they failed to bring down any of the French aircraft, the British lost three of their own.
The Fairey Fulmar was predominantly employed in the Mediterranean against Axis maritime patrol aircraft. (https://www.armouredcarriers.com/fairey-fulmar-models)
Deployment to China Bay
In February 1942, a small contingent of Fairey Fulmar aircraft was dispatched to China Bay to support the Royal Air Force’s General Reconnaissance No. 273 Squadron. The Fulmar equipped two squadrons, No. 803 and No. 806. No. 803 Squadron suffered heavy losses in April 1942 when four of its six aircraft were shot down during an engagement with Japanese fighters. However, the squadron managed to achieve one air victory during the battle.
On April 9, the Fulmars saw action again when they engaged Japanese bombers attacking the British aircraft carrier HMS Hermes. Despite being at a disadvantage, they successfully shot down three enemy bombers but lost two of their own aircraft in the process.
End of Service
By 1943, most Fulmar aircraft that had been deployed as day fighters were withdrawn from frontline service. The remaining aircraft were repurposed for training or used as second-line night fighters for the remainder of the war. As the war in Europe neared its end, nearly all Fulmars were replaced by the improved Fairey Firefly. In total, approximately 40 Fulmars were lost in combat by the war’s conclusion.
Technical characteristics
The Fulmar was a single-engine, all-metal carrier-based fighter. Its monocoque fuselage was constructed using metal panels placed over a tubular framework. A similar design approach was employed for the rest of the aircraft, including the wings and tail assembly.
Since the aircraft was intended to operate from smaller aircraft carriers, where space was limited, its wings needed to be foldable to maximize available room. As a result, the inner section of the wings was fixed to the fuselage, while the outer sections were designed to fold back efficiently against the sides of the aircraft. The tail assembly followed a more conventional design, featuring two horizontal stabilizers and a single vertical stabilizer.
Since it was designed to operate from an aircraft carrier, where space was limited, its wings were modified to fold. (https://www.armouredcarriers.com/fairey-fulmar-models)Its landing gear consisted of two main wheels that retracted inward into the fuselage, along with a small fixed tail wheel. (https://en.wikipedia.org/wiki/Fairey_Fulmar)
The first prototype developed from the P.4/34 was powered by a 1,030 hp Rolls-Royce Merlin II V-12 engine. It was later replaced with a slightly more powerful Merlin VIII engine, producing 1,080 hp. With this upgrade, the aircraft achieved a maximum diving speed of 724 km/h (450 mph) and a cruising speed of 398 km/h (247 mph). The final improved variant was instead equipped with a Merlin 30 engine, delivering 1,300 hp. This modification increased the cruising speed to 417 km/h (259 mph).
Initially powered by a 1,030 hp engine, it was soon replaced with a later variant that produced 1,300 hp. While this upgrade didn’t significantly increase its maximum speed, it was certainly a welcome improvement in its rate of climb and sustained turn rate. (https://www.armouredcarriers.com/fairey-fulmar-models)
Beneath the fuselage, there were sets of catapult spools along with an arrestor hook. These components were essential for launching the aircraft from a carrier. The arrestor hook featured a V-shaped design and was secured in place by a snap lock. The pilot could release it when needed, and when not in use, only a small portion of the hook remained exposed.
The cockpit consisted of a position for the pilot and a rear, extended radio operator/observer cabin. To provide the best forward visibility, the pilot’s canopy was slightly elevated. The remaining crew compartment was fully glazed to ensure the best possible view of the surroundings. Given the distance between them, the crew communicated using a speaking tube or, when necessary, a sidetone. However, due to engine noise, the latter method was not always the most effective.
The Fulmar featured a raised pilot’s canopy, providing an excellent forward view. Additionally, its rear crew compartment was fairly long and enclosed by a glazed canopy, offering a good all-around view. (https://hushkit.net/2020/03/24/fairey-fulmar-how-an-absurd-lumbering-thing-became-britains-top-scoring-naval-fighter/)
The armament of this aircraft consisted of eight 7.62 mm machine guns mounted in the wings. Each gun was initially supplied with 750 rounds of ammunition, which was later increased to 1,000. While eight machine guns may sound formidable, in practice, they lacked the firepower needed to inflict serious damage on larger targets, given their relatively small caliber.
The ground crew in the process of loading each gun with 750-round belts. Later, this was increased to 1,000 rounds per machine gun. (https://www.destinationsjourney.com/historical-military-photographs/fairey-fulmar/)
For example, the British recorded an incident in which three Fulmar fighters engaged a single Blohm & Voss BV 138, a long-range maritime reconnaissance aircraft. Despite firing nearly 18,000 rounds at it, the German aircraft suffered no significant damage and managed to escape.
To address this issue, the British considered equipping the Fulmar with heavier 12.7 mm (0.5 in) machine guns. While the installation proved feasible, a shortage of these weapons meant that very few aircraft were ever fitted with them. Around 100 units were slated for modification to carry four of these heavy machine guns, but only a small number actually received the upgrade.
Despite having enough space, no attempt was made to mount a rear-positioned machine gun, despite the crew’s insistence on doing so. Instead, the crew improvised with whatever defensive weapons they could find. Some used Thompson submachine guns, while others relied on signal pistols. The most unusual weapon employed for self-defense was a bundle of standard-issue toilet paper, secured with an elastic band. When thrown out of the aircraft, the band would snap, creating an explosion of paper that, on rare occasions, helped distract or deter enemy pursuers.
The Fulmar was originally designed to carry a bomb load consisting of either two 45 kg or 113 kg (100-250 lbs) bombs. However, this was never actually implemented, as no bomb racks were installed to accommodate such a load. On rare occasions, small 9 to 18 kg (20-40 lbs) bombs were carried to engage enemy anti-aircraft batteries during support missions.
Production
Production of this aircraft began in May 1940 and ended in February 1943. During that time, 250 units of the Mk. I variant was built, followed by 350 of the later Mk. II variant. In total, approximately 600 aircraft of this type were produced during the war.
Production Versions
Fairey Fulmar Mk.I– First production variant
Fairey Fulmar Mk.II– Second production variant equipped with a Merlin 30 engine
Night Fighter/trainer– Modified to act as a night fighter, supplied with radio equipment. In total 100 were converted to this role of which half were reused as night fighter trainers
Long-Range Reconnaissance – Equipped with long-range radio equipment
Surviving Aircraft
Only one of the approximately 600 aircraft of this type has survived to this day. This surviving example is actually the first prototype, which was later used for civilian purposes after the war. Today, it is on display at the Fleet Air Arm Museum in Yeovilton.
The only surviving Fairey Fulmar can be seen at the Fleet Air Arm Museum in Yeovilton. (https://en.wikipedia.org/wiki/Fairey_Fulmar)
Conclusion
The Fairey Fulmar was an attempt to adapt an existing aircraft design into a fighter type that was in high demand by the British Royal Navy. While it met most of the required specifications, it was too slow and heavy to compete effectively against faster, purpose-built fighters. Its
armament, despite featuring multiple machine guns, was also still somewhat underpowered. However, this did not prevent the Fulmar from achieving remarkable success for a relatively large fighter. Despite its small production numbers, it proved effective against Italian aircraft and, on occasion, even German fighters. By 1943, however, it was becoming obsolete, and by the end of the war, all remaining Fulmars had been retired from service. Nonetheless, it paved the way for later, more advanced naval aircraft.
United Kingdom (1943-1944) Rotor Kite Transport – One prototype
During the Second World War, airborne troops became an essential component of modern military strategy. They allowed armies to wreak havoc on unprotected rear areas by destroying critical targets, such as the enemy’s vital command structures, and the infrastructure supporting their army. However, one major drawback was that once on the ground, these troops were lightly equipped and moved at a walking pace. However, an engineer named Raoul Hafner proposed an innovative solution: airlifting light vehicles using unpowered rotary wings, similar to those later used in helicopters. His concept involved towing the vehicle, behind a truck or light aircraft until lift off. Once airborne, it would be released, and the pilot would use autorotation to fly the vehicle to the landing zone. A prototype was built and tested, but with the advent of larger gliders, the project was ultimately abandoned.
With the abundance of US-supplied military vehicles, the British sought ways to incorporate them into various roles, and experiments. Among those interested was Raoul Hafner, a rotor kite enthusiast. Rotor kites were essentially unpowered rotary-wing aircraft that shared many design features with later helicopters. While helicopters can take off under their own power, rotor kites cannott, instead, they need to be towed by a larger aircraft, or a suitable ground vehicle. Once airborne, they rely on airflow over their rotary wings to generate lift and remain airborne. This can be achieved by descending to generate speed and lift, having a strong wind to keep the rotor wing turning, or remaining tethered to another vehicle for the entirety of the flight. Although this technology was inexpensive to build, it was never implemented on a larger scale.
Hafner was born in Austria in 1905. In his early twenties, he developed an early interest in rotorcraft design, and in 1928, he collaborated with Bruno Nagler on an early helicopter prototype. In the early 1930s, Hafner emigrated to the United Kingdom, where he began working on gyroplanes there, he designed and built a functional prototype known as the Hafner A.R.III Gyroplane. Hafner continued refining his designs, but with the outbreak of World War Two, he was briefly held in state custody due to his Austrian origin.
Raoul Hafner would go on to play a vital role in the history of helicopter development. However, his early work was primarily focused on an unpowered variant known as the rotor kite. Source: en.wikipedia.org
Upon his release, Hafner began working on a solution to Britain’s shortage of materials needed for parachute construction. His goal was to develop an inexpensive, one-man rotor kite to carry an infantryman deep behind enemy lines. The core principle behind his concept was that, given the scarcity of materials required for parachute production, a small, easy-to-build, and simple-to-control rotor kite could serve as a cost-effective alternative. These kites were designed to be towed into the air by another aircraft and then released near the designated target. Once released, the pilot/paratrooper would glide down slowly before proceeding to their objective. Hafner followed with a small prototype series of these aircraft, designated the Hafner Rotachute. While his work showed promise, it ultimately resulted in only a limited number of experimental prototypes, with no further large-scale implementation.
The so-called Hafner Rotachute was an experimental attempt to develop an alternative to parachutes. While the concept was intriguing, it never progressed beyond a small prototype production run. Source: en.wikipedia.org
He soon expanded on that idea, if he could devise a way to land soldiers, why not include light vehicles as well? Paratroopers, who were often dropped behind enemy lines to wreak havoc among key targets, were frequently left vulnerable as they were lightly armed and had limited mobility. The challenge, however, was that airdropping even light vehicles was no simple task. Hafner theorized that his rotor kite design could be expanded and enlarged to allow for the airlifting and deployment of light vehicles. If successful, this would provide paratroopers with a means of transportation, increasing their effectiveness in combat.
The overall design was intended to be as simple as possible. A standard light vehicle, left mostly unmodified, would be partially enclosed within an aerodynamic fuselage, likely made of plywood, to provide lift and protect the crew from the tow aircraft’s propeller wash, and the wind. A rotary assembly would be mounted on top, while a large tail section at the rear would ensure lateral stability. Upon landing ,assuming a safe descent, the crew would discard the fuselage, leaving the vehicle fully operational and ready for use without issue.
In 1942, with this idea in mind, he approached the Central Landing Establishment, later renamed the Airborne Forces Experimental Establishment, to present his proposal. While, at first, the concept of attaching a makeshift rotary wing to a lightweight wheeled vehicle may seem dangerous and wasteful, it would be phenomenally valuable should it succeed. Developing an effective method for transporting such vehicles over long distances would have provided significant combat advantages. This was especially crucial at a time when the Allies were considering various plans and strategies for invading occupied France, plans where airborne units played a star role. Thus the Central Landing Establishment saw potential in this idea, and Hafner received approval to move forward with its development. Now, Hafner needed to find a suitable light chassis for the job. Fortunately for him, he didn’t have to search for long, the answer was already in the hands of the UK’s ally across the Atlantic.
A Well-Known Icon
In the 1930s, the leadership of the US Army closely observed the rapid military developments unfolding in Europe and the Pacific. In response, the Army sought to modernize its forces, starting with an increase in mobility for its reconnaissance units and couriers, which at the time primarily relied on horses.
Initially, as in Germany, motorcycles were introduced for this role. While they were an improvement over horses, they had significant limitations, primarily their limited carrying capacity, as they could only transport the driver, one additional passenger, and a very small amount of cargo. It became clear that a larger, more capable vehicle was needed.
This led to the development of small, relatively inexpensive, all-wheel-drive light vehicles. Throughout the 1930s, the Army conducted extensive testing and evaluation of several different designs. After these trials, a final decision was made to adopt Willys-Overland Motors’ design, known as the Willys MB, but generally, it was simply referred to as the Jeep, as the Army’s standard lightweight reconnaissance vehicle. Unbeknownst to them at the time, they had just created one of the most iconic military vehicles in history.
The Willys MB would become one of the most iconic military vehicles in history. Source: en.wikipedia.org
While Willys was set to produce these new vehicles, the immense demand and the need to utilize the vast production capacity of its competitor, Ford, led to the company also receiving orders to manufacture the vehicle. Although Ford was allowed to make some modifications, the overall design had to remain to ensure all mechanical components for the vehicles were interchangeable. Between 1941, when production began, and 1945, over 600,000 of these vehicles were produced. They saw widespread service across the globe during and after the war, with a significant number still in use today.
Initially designed for reconnaissance operations, their sheer numbers and popularity led to their adaptation for various roles. These included medical evacuation, combat, self-propelled rocket launchers, and long-range raiders for missions against enemy rear positions. They were also used as command vehicles, among many other roles.
The vehicle was widely exported to Allied nations, including the UK, which received tens of thousands. Even the Soviet Union acquired them and eventually developed its own variant. Given the vast stockpile of these vehicles, it is unsurprising that Hafner chose to test his idea using one of them.
The Jeep saw extensive use by British special forces in North Africa, where it played a crucial role in raids targeting enemy rear positions. Source: wikipedia.org
Name
The unusual vehicle was known by many nicknames. It received the Air Ministry designation ML 10/42 Special Rotating Wing Glider. It was also called the Malcolm Rotaplane, Flying Jeep, and Blitz Buggy. Eventually, it became best known simply as the Hafner Rotabuggy. For the sake of simplicity, this article will refer to it as the Rotabuggy.
Building and Testing the Vehicle
After receiving approval, the next task was to find a suitable chassis, and someone capable of building the vehicle or aircraft. Given the abundance of options, Hafner decided to utilize the US-supplied Jeep light reconnaissance vehicle. For the construction of the working prototype, he approached R. Malcolm Ltd., a small company that had been building aircraft components during the war.
Once the base components were selected, the construction of the working prototype began. It was likely completed by mid-1943. The first flight trials of the Rotabuggy were scheduled for November 1943. These trials were planned to be conducted using a Diamond T 4-ton 6×6 truck as a tug vehicle. This was seen as a simple, cost-effective, and safe option, given the prototype’s early development stage, far too early for tests with aircraft. The flight tests were carried out on the 16th November, 1943. Despite numerous attempts, the crew was unable to get the Hafner Rotabuggy off the ground, as they could not achieve the necessary speed to generate lift.
The Rotabuggy’s shape in its early experimental phase was still evolving. Experimenting with the design led to many changes, such as the introduction of much larger tail fins. Source: www.nevingtonwarmuseum.com
Further tests were carried out on 27th November. This time, a stronger, albeit unspecified, tug vehicle was used. The initial test was successful, as they managed to lift the Rotabuggy into the air. The first flight test using a tug aircraft, specifically a Whitley Bomber, was conducted in December 1943. However, the first design problems were identified during this test flight. At a speed of 80 km/h (50 mph), the vehicle experienced strong vibrations, forcing an early end to the flight.
Subsequent tests with a similar tug vehicle showed that the vibrations persisted at speeds of 70 km/h (45 mph) and higher. Additionally, during one test flight, one of the rotors struck the tail fin, damaging it in the process. Following these tests, the Rotabuggy was temporarily grounded for various repairs and modifications.
By February 1944, the Rotabuggy achieved a speed of 112 km/h (70 mph), and many more tests were carried out throughout 1944. On September 11th, 1944, the first major test flight was undertaken. At a height of 120 m (400 feet), after being towed by a Whitley bomber, the small buggy was released. After some brief difficulty controlling the aircraft, the pilot managed to land the vehicle, though with some effort.
In later stages, it would look visually much different, having a fully enclosed cockpit. Source: www.macsmotorcitygarage.com
Fate
Given the extensive testing, it was clear that there was significant interest in this project. However, despite more than a year of development, the project was ultimately canceled. The primary reason for this was not the new concept itself but rather the fact that the British had begun mass-producing gliders, such as the Waco CG-4, which could carry a Jeep within its fuselage. As a result, the Rotabuggy was no longer needed.
While his Rotabuggy project reached an unsuccessful dead end, this was not the end of Hafner’s story. Given his expertise in rotor aircraft development, he was appointed Chief Designer and head of the newly established Helicopter Division at Bristol. Hafner’s work at Bristol was highly successful, and he played a pivotal role in advancing early British helicopter design. His contributions were instrumental in the development of aircraft such as the Type 171 Sycamore, and the large tandem-rotor Bristol Belvedere.
He was also among the first aircraft engineers to receive the Dr. Alexander Klemin Award, a prestigious honor in the field of vertical flight aeronautics. Tragically, in 1980, Hafner disappeared at sea when his boat went missing and was never found.
Technical characteristics
The Rotabuggy fuselage was an extension added to the U.S. Jeep, designed to enable controlled flight. During testing, it was concluded that the Jeep could be dropped from a height of up to 2.35 m (7.7 ft) without suffering any major mechanical breakdowns. It could thus theoretically survive rough landings on unprepared ground.
Essentially, it consisted of a standard Jeep with four metal bars arranged in a pyramidal shape at its base. To enhance structural integrity, two additional metal bars connected the front and rear pairs. Atop this framework, a rotor unit was intended to be installed.
Another metal frame was attached to the rear section, consisting of at least four long stringers reinforced with smaller crossbars. Surrounding this structure, a series of almost circular frames, decreasing in size toward the tail section, were added to shape the fuselage.
A clear view of the Rotabuggy’s internal framework, which consists of at least four long stringers reinforced with smaller crossbars and enclosed in a plywood skin. Source: www.macsmotorcitygarage.com
The structure forming the base of the fuselage was then covered with plywood for aerodynamics. The sides and top were essentially flat, without any noticeable features. Large windshields were added at the front and on the crew’s side doors, providing excellent, almost all-around visibility. This gave the crews a clear view, more than sufficient for landing the aircraft. While little data for its flight characteristics survive, its estimated rate of sink at a speed of 77 km/.h (48 mph) was 4.9 m/s (960 ft/min)
Large windshields were added at the front and on the crew’s side doors, providing excellent, almost all-around visibility. This gave the crews a clear view of their surroundings. Source: rafbeaulieu.co.ukThe rear part of the fuselage was essentially flat, featuring only a slight curve. Source: /www.nevingtonwarmuseum.com
To help provide lateral stability, a large tail assembly was added to the vehicle’s rear. It consisted of two fairly large vertical stabilizers. Interestingly, there were no rudders on these fins. Lastly, a small landing skid was located at the end of the vehicle’s tail.
The tail assembly features two large fins that provide much-needed lateral stability. Source: www.nevingtonwarmuseum.com
The crew consisted of two members: a driver and a pilot. The driver was seated on the left side, as in the original Jeep configuration. The pilot sat in the opposite seat and was responsible for controlling the rotor blades, which were used to lift the vehicle off the ground. To control the vehicle, the pilot was provided with a control column, a rotor tachometer, and a set of basic and glider navigational instruments. Once on solid ground, the vehicle would be driven like a regular Jeep.
The Rotabuggy used rather long rotor blades, with a diameter of 14.22 meters (47 feet). There were some issues with this length, as on at least one occasion, they damaged the rear tail assembly, luckily without injuring its crew.
The control column for the aircraft. Source: aviadejavu.ruThe Rotabuggy used rather long rotor blades. There were some issues with this length, as on at least one occasion, they damaged the rear tail assembly. Source: aviadejavu.ru
Surviving Aircraft
Since it never progressed beyond the prototype stage, it is not surprising that the vehicle did not survive to the present day. The prototype was eventually refurbished back to a standard Jeep . However, being such an intriguing design concept, a replica was built by the Wessex Aviation Society. can now be seen at the British Museum of Army Flying in Middle Wallop, Hampshire.
While the prototype did not survive, the Wessex Aviation Society managed to modify a Jeep and create a modern replica of the Hafner Rotabuggy. Source: www.reddit.com
Conclusion
The Hafner Rotabuggy was surely an interesting and unique attempt at utilizing the relatively new rotorcraft design. In theory, this concept would allow for an alternative method of airdropping men and materials, including vehicles.
While the Rotabuggy had some issues, such as severe vibration during flight, it was generally considered a mechanically sound design. However, its main drawback was that, despite its novelty, it did not offer significant improvements over the gliders already in use. As stronger and more capable gliders were developed, which could transport both personnel and lightweight vehicles, the Rotabuggy became obsolete.
Although its service life was short, the project played a vital role in shaping Hafner’s future work in rotary-wing aircraft, ultimately contributing to the development of various helicopter designs.
In the late 1930s, the Luftwaffe received substantial resources which allowed for the development of many new series of aircraft. While the Luftwaffe would take on numerous new roles in the new modern military, reconnaissance of enemy territory would remain a crucial aspect of their operations. This reconnaissance work involved identifying weak points and reporting any enemy activity which could prove threatening to the situation on the ground, or presented an opportune target for the air force. The primary responsibility for these tasks fell to light, tactical reconnaissance aircraft. Initially, the Hs 126 was chosen for this role, early combat experience revealed the need for a modern replacement. This led to the development, and introduction, of the well-known twin-engine Fw 189, designed by Kurt Tank.
Fw 189A was Germany’s first modern tactical reconnaissance aircraft. Source: www.luftwaffephotos.com
History
Following the rise of the Nazi party in Germany, significant investments were made in both the Army and the Airforce. The latter, in particular, experienced rapid expansion, through the introduction of a series of new aircraft designed to fulfill various roles. This was no easy task for the Germans, as following the end of the First World War, they were prohibited from developing new aircraft. As a result, they essentially had to start from scratch. For short reconnaissance flights, the Hs 126 was selected. Despite its outdated appearance, this high-wing parasol aircraft proved to be well-suited for the role. However, it was not without flaws.
As production began, the first aircraft of this type was field-tested during the Spanish Civil War. While it performed excellently in its intended role, two major issues were identified. First, the rear gunner also served as the observer, requiring him to switch between these roles depending on the combat situation. The gunner/observer’s primary responsibility was to act as a vigilant lookout, constantly scanning for potential threats while simultaneously surveying the battlefield. This dual role required sharp focus and the ability to quickly assess and respond to emerging dangers, and naturally proved challenging. Second, the aircraft’s low speed, while beneficial for reconnaissance, made it vulnerable to enemy fighters. Essentially, a third crew member was needed, along with an increase in speed, to address these shortcomings.
The Hs 126 was chosen as the Luftwaffe’s first operational tactical reconissance aircraft. Source: en.wikipedia.org
The initial deployment of the Hs 126 in Spain quickly demonstrated to the Germans that the aircraft would soon become obsolete. In response, the Reichsluftfahrtministerium, or German Air Ministry, issued a request for a potential replacement in February 1937. The requirements were straightforward: the new aircraft needed to accommodate a crew of three, provide excellent all-around visibility, achieve a higher maximum speed, and carry an improved defensive armament. Additionally, the RLM decided to include a bomb rack capable of carrying at least 200 kg, reasoning that it would be advantageous to drop bombs during reconnaissance missions.
Three companies reached the final stage of this competition: Arado with the Ar 198, Focke-Wulf with the Fw 189, and Blohm & Voss with the BV 141. Among these, only the Ar 198 had a conventional design by the standards of the time. The Fw 189 featured a central glazed nacelle flanked by two tail boom-mounted engines. The BV 141, however, stood out with its highly unconventional asymmetrical design.
The Arado entry to this competition, the Ar 198. Source: en.wikipedia.orgBlohm & Voss’ asymmetrical BV 141. Despite its unusual design, the aircraft performed surprisingly well, but did not enter mass production. Source: en.wikipedia.org
The Focke-Wulf design team, led by renowned German aircraft designer Kurt Tank, and supported by E. Kosel conceived a twin-boom aircraft powered by two engines. The central section featured a large, fully enclosed, and heavily glazed fuselage. They also proposed that the aircraft could be adapted for various roles by simply using different fuselage sections. The paper proposal and calculations were completed quickly and presented to the RLM in February 1937. Although the RLM officials were initially uncertain about the Focke-Wulf design, they eventually placed an order for the construction of three prototypes. Interestingly, when the request for a potential replacement for the Henschel Hs 126 was issued, there was no specification that the aircraft had to be powered by a single engine.
Work on the first prototype, designated Fw 189V1 (D-OPVN), began in April 1937. This aircraft was powered by two 430-horsepower Argus As 410 engines. By 1938, the prototype was ready and underwent flight testing by Kurt Tank himself in July of that year. The prototype demonstrated excellent performance and had no major issues.
The second prototype, designated D-OVHD, was flight-tested in August 1938. It was used to test the installation of armaments, including machine guns and bombs. Two 7.92 mm MG 17 machine guns were mounted inside the wings, one (or possibly three, depending on the source) machine gun was installed in the aircraft’s nose, one in the dorsal position, and another in the cone-shaped turret at the rear of the fuselage. Four bomb racks were also added under each wing, each capable of carrying up to 50 kg of bombs. If necessary, the aircraft could be equipped with chemical containers filled with either poison gas or smoke.
A third prototype, designated D-ORMH, followed and was flight-tested in September 1938. This variant was essentially a direct copy of the previous two but without armament. It was primarily used for testing the installation of Argus automatic variable-pitch propellers.
All three prototypes demonstrated excellent overall performance, while their competitors were less fortunate. The Ar 198 was quickly eliminated from consideration due to its poor performance, with only one prototype ever built. RLM officials were uncertain about the next steps, as both the Fw 189 and BV 141 were unconventional designs that were considered unproven. It is not far-fetched to suggest that the RLM had concerns about whether the BV 141 could even be flown reliably in field conditions, leading them to favor the Fw 189 instead. As a result, Focke-Wulf received a production order for four additional prototypes.
Anticipating a major production order, the fourth prototype (D-OCHO) was designated as the basis for the first production variant, named the Fw 189A-0. This variant was powered by two more powerful Argus As410A-1 engines, each producing 465 horsepower. The armament was reduced to just two machine guns.
While Focke-Wulf was making plans for the potential production of the first Fw 189A-0 aircraft, the company’s officials were disappointed and shocked when the RLM informed them that the Hs 126 would not be replaced by the new Fw 189. The Luftwaffe had changed its mind, deciding that the Hs 126 did not, in fact, need to be replaced.
Finally, into the production
Despite its potential, Focke-Wulf could do little to advance the design at the time given the news from the Luftwaffe. Not wanting to waste a promising project, Kurt Tank and his team continued working on it at a slow pace, and at low cost. However, following the successful conclusion of the campaign in France in June 1940, Luftwaffe officials reassessed their opinion on the Hs 126. It became clear that this aircraft was obsolescent in its intended role, and an urgent replacement was needed. The only available aircraft that could potentially fill this role in a short time was the Fw 189.
As a result, Focke-Wulf received its first production order for 10 Fw 189A-0 models in the summer of 1940. The company was also instructed to proceed with the development of the A-1 variant, which was to enter production as soon as possible. However, Focke-Wulf was already heavily involved in the development and production of the new Fw 190 fighter, making it difficult to meet the demands for the Fw 189.
To expedite production, an aircraft manufacturer in Prague was contacted to assist with manufacturing. Even this was not sufficient, so Focke-Wulf moved the production of the Fw 189 to France, utilizing several captured aircraft manufacturing facilities. The Focke-Wulf factories in Bremen and the Aero factories in Prague ceased Fw 189 production in late 1942 and 1943, respectively. Production continued in the French factories until January 1944, when it was finally halted.
The production by years was as follows.
Year of Production
Production numbers
1939
6
1940
38
1941
250
1942
327
1943
226
1944
17
In total
864
Main Production Variants
The A-series was based on the V4 prototype. Unlike the prototype series, it did not include the nose-mounted machine guns. Instead, its main armament consisted of two machine guns mounted in the front wing roots, with an additional one or two located at the rear. If needed, a bomb rack could be installed. Given the aircraft’s specific reconnaissance roles, it could be equipped with various types of cameras. The A-1 model was essentially a direct copy of the fourth prototype, with slight modifications made to the engine cowling to enhance its aerodynamic profile.
The V4 prototype served as the base for the Fw 189 A-0 series. Source: www.warbirdphotographs.comEarly produced Fw 189A-1 aircraft. Source: Pinterest
At least 30 Fw 189A-1 aircraft were modified for use as night interceptors for use against slow, low flying biplanes on the Eastern Front. To fulfill this role, they were equipped with a FuG 212 C-1 aerial interception radar, distinguished by its forward antenna. Additionally, a fixed MG 151 cannon, either 1.5 cm or 2 cm in caliber, was installed in the rear, angled upward to target enemy aircraft from below.
One of the 309 Fw 189A was modified to be used as a night interceptor. They can be easily identified by the front-mounted antenna and the rear MG 151 cannon. Source: www.warbirdsresourcegroup.org
Combat experience quickly revealed that the Fw 189 needed a stronger defensive armament. In response, the Fw 189V9 prototype was tested with the installation of two twin 7.92 mm MG81Z (Z stands for Zwilling – twin) mounts. As these proved reliable, they were adopted for the A-2 variant, which entered production around mid-1941.
Shortly after its introduction into service, it became evident that a dual-control training variant was necessary to properly train pilots. Since the B variant did not enter mass production, a solution was required. The most cost-effective option was to modify an existing Fw 189A with dual controls. This led to the creation of a small production series of training aircraft, designated as the A-3. Some of the older aircraft from the A-0 and A-1 series, as well as prototypes, were repurposed for this variant.
The A-4 was designed as a light ground-attack variant. It was armed with two forward-mounted 20 mm cannons and two MG 17 machine guns. Additionally, armor was added to protect vital components such as the fuel tanks, engines, and central fuselage. An unknown number of these variants were produced beginning in late 1942.
A few aircraft adapted for the African theater of war were equipped with dust filters and designated as the Fw 189A-1 Trop.
Nicknames
Interestingly, Kurt Tank himself nicknamed this aircraft Eule (Eng. Owl). Allegedly, the inspiration for this name came from the large, owl-like shape of the cockpit. The RLM media referred to it as Das Fliegende Auge (Eng. The Flying Eye), while those who operated it on the front lines called it Uhu (Eng. Eagle Owl).
In Combat
During 1940, the first produced Fw 189 aircraft were allocated to various Luftwaffe experimental and training units. Their purpose was to test and evaluate the new Fw 189’s performance. For example, the Lehrgeschwader 2 (Eng. Training Squadron) was supplied with five Fw 189A-0 aircraft, which were flight-tested against the Hs 126. After a series of evaluation flights, the Fw 189 was declared superior in all aspects. This conclusion was a key reason why Luftwaffe officials decided to adopt the Fw 189.
Due to the slow pace of production, when the war with the Soviet Union broke out in June 1941, only about 250 Fw 189s were available for service. This number was barely enough to outfit all units, so the Hs 126 had to remain in use.
By 1942, the Fw 189 began gradually replacing the Hs 126 as the main German tactical reconnaissance aircraft. According to German records from September 1942, out of 317 short-range reconnaissance aircraft, 174 were Fw 189A-1 and A-2 models.
Their service on the Eastern Front demonstrated that these aircraft, despite their seemingly fragile appearance, were quite robust and capable of withstanding heavy damage. For example, on the 19th May 1942, a lone Fw 189 was attacked by Soviet fighters near the Taman Peninsula. The left engine of the Fw 189 sustained such severe damage that it fell off. Assuming the aircraft was doomed, the Soviet fighters broke off the attack. However, the pilot did not give up and managed to fly the damaged Fw 189 back to German lines, where he executed an emergency landing. The aircraft suffered additional damage during the crash landing, yet it was eventually repaired and returned to service. Despite their durability, several Fw 189s were lost, along with other equipment, during the encirclement of German forces at Stalingrad. In one unusual incident, a Soviet fighter pilot, after running out of ammunition, rammed a Fw 189 near Stalingrad, successfully severing its tail.
By 1943, the Soviet Union’s increased fighter production made short-range operations too dangerous even for the Fw 189. Reconnaissance missions became nearly impossible without a fighter escort. After 1943, the Fw 189 was primarily employed for ground attack operations against Soviet Partisan positions, achieving notable success. However, with the Soviet fighter force continually growing, the days of the Fw 189 were numbered. By 1944, it was rarely used in its original reconnaissance role and often became a priority target for Soviet fighters once spotted. Despite this, the aircraft remained effective in some areas, such as Finland, where it continued to be used until September 1944.
The Fw 189 was primarily operated on the Eastern Front, including Finland. The only other front where it saw limited use was in North Africa. A small number of night interceptor variants, some 30, were assigned to two units, Nachtjagdgeschwader 5 and 100 (NJG, or Night Fighter Squadron), and served late into the war. Tasked specifically with countering Soviet Po-2 biplanes that harassed German railroad lines, NJG 100 earned the nickname Eisenbahn-Nachtjagd (Eng. Railway Night Hunt). The Fw189 performed excellently in this role, bringing down many Soviet night bombers in the process.
Beyond its original role, the Fw 189 also saw service as a light bomber and VIP staff transport. For example, the A-1 variant was used as a personal transport for Field Marshal Albert Kesselring. By late 1944, most of the surviving Fw 189 aircraft were relegated to training duties.
Despite their modest numbers, the Fw 189 would see extensive use on the Eastern Front. Source: www.asisbiz.comNear the end of the war, the few surviving Fw 189 were used as training aircraft, easily identified by the large painted number on their tails. Source:. G. Punka Focke-Wulf Fw 189 in Action
Failed Proposals
Although the Luftwaffe initially did not adopt the A variant, they showed an interest for the crew training variant designated as the Fw 189B. This version featured a less-glazed fuselage and dual control units. However, only a small number of these variants were produced.
The first year of the war revealed that the Germans lacked a dedicated armored close support aircraft. In response, Focke-Wulf proposed the Fw 189C as a potential solution. This variant featured a small, cramped, but well-protected cockpit, replacing the previous large fuselage. However, due to poor visibility and handling issues, it was not adopted for service.
The Fw 189D was proposed for naval use and was equipped with twin floats. It was essentially based on the Fw 189B variant, but no further developments materialized.
Focke-Wulf also experimented with various engines. The Fw 189E was tested with the French GR14M 700 hp engine. Unfortunately, the prototype was lost in an accident while being transported from France to Germany in 1943. The Fw 189F, based on the A-2 variant, was powered by the As 411MA-1 600 hp engine and used to test electrically powered landing gear. Although the tests were successful, only 17 units were built in 1944 before the production of the Fw 189 was discontinued.
The Fw 189F-2 was an improved version with enhanced armor protection, but it did not progress beyond the proposal stage. The last proposed variant, the Fw 189G, was intended to be powered by As 402 950 hp engines, but it also failed to materialize.
Other operators
During the later stages of the war, the Hungarians received over 28 Fw 189 aircraft. Despite the relatively small number of planes, these were used extensively by Hungarian forces. The Slovakians also received 14 Fw 189A-1s between 1942 and 1943, which were employed in the Crimea. Some surviving aircraft were even used against the Germans during the failed Slovakian uprising in late 1944, with at least six managing to escape to the Soviet Union. Bulgaria received several Fw 189s, which were deployed on the Eastern Front. Additionally, eleven Fw 189s were supplied to Romanian forces, primarily for training purposes, but most were eventually captured by the Soviets. After the war, one aircraft was operated by the RAF for evaluation purposes, but it was lost in a storm while being stored.
Hungarian operated Fw 189. Source: G. Punka Focke-Wulf Fw 189 in ActionA Soviet operated Fw 189, possibly one of the Slovakian managed to escape in late 1944. Source: www.luftwaffephotos.comSmaller numbers were also allocated to the Bulgarian Air Force. Source: G. Punka Focke-Wulf Fw 189 in Action
After the war
When the war ended, there were few surviving Fw 189. The British managed to capture one in working condition. It was extensively used by the British pilot Captain Eric Brown, who was the chief test pilot of the Royal Aircraft Establishment at Farnborough. He was involved in a British project tasked with taking over German war research installations and interrogating technical personnel after the war.
He was quite impressed with the overall performance of the Fw 189. After many hours of flying, he noted only one instance of engine failure. Even with just a single engine, the aircraft remained pleasant to fly without significant issues. The main drawback Captain Brown observed was the rather poor forward visibility, despite the extensive glass coverage in the front section. This limitation was primarily due to the shape of the nose. Nevertheless, Captain Brown described the Fw 189 as;
“… A Versatile little beauty to fly and a great asset to the German Army’s ground troop..”
Technical characteristics
The Fw 189 was designed as a twin-engine reconnaissance aircraft with a unique construction. Its centrally positioned fuselage featured extensive glazing and housed the cockpit at the front, followed by a small crew area and a gunner’s compartment at the rear. The fuselage was bulkier at the front and tapered toward the rear. Access to the crew area was provided through two hatches above the cockpit and a larger hatch at the rear. Although the extensive glazing left the crew more exposed to enemy fire, it was ideal for its reconnaissance role, offering excellent all-around visibility.
The wings are composed of two distinct sections. The central, square-shaped panel connects the nacelle and engines, while the second section extends outward from the booms. The wings feature a metal base covered with duralumin, though the ailerons and split flaps are clad in fabric. At the rear, the twin-tail assembly includes two large rudders, which are joined by a single long elevator. Both control surfaces on the tail are also covered in fabric.
The aircraft was powered by two 465 hp Argus As 410 A-1 12-cylinder air-cooled V-12 engines. These engines demonstrated remarkable effectiveness and reliability, even under the harsh winter conditions of the Eastern Front. With these engines, the Fw 189 achieved a maximum speed of 335 km/h, though exact figures may vary between sources. Each engine drove a two-blade, constant-speed propeller. Fuel was stored in two 110-liter tanks, which were housed in the tail booms. The Fw 189 had a maximum operational range of approximately 670 km.
The landing gear consisted of larger road wheels positioned under each engine nacelle, with a pair of smaller wheels extending from the elevator. Initially, the aircraft used an ‘H’-shaped landing gear leg design, but this was modified during production. To enhance stability during landing, each landing gear leg was equipped with a shock absorber. The front landing gear units were lowered using hydraulic systems, while the rear smaller landing gear units descended under their own weight. When the aircraft’s speed dropped below 160 km/h, the landing gear automatically deployed in preparation for landing. If the pilot wished to override this action, they had the option to disable it by pressing a switch inside the cockpit.
The early prototypes had a single-leg landing gear unit. Source: www.luftwaffephotos.comLater into production, these were replaced by more stable ‘H’ shaped landing gear legs. Source: www.luftwaffephotos.com
The aircraft’s crew consisted of three members: the pilot, the navigator, and the rear gunner. The pilot occupied the front of the cockpit, while the navigator sat directly behind him. In addition to navigation, the navigator operated the camera equipment and managed the upper rotating machine gun mount. He was also responsible for radio operations. The rear gunner, the final crew member, served as both machine gun operator and the flight engineer.
Most of the pilot’s instruments were were positioned near the cockpit roof, as shown here. Source: /www.luftwaffephotos.com
The primary armament of the Fw 189 consisted of two forward-mounted 7.92 mm MG 17 machine guns, operated by the pilot. The early design included a single machine gun in a rotating mount positioned on the dorsal side. A rear cone-shaped rotating turret housed additional machine guns, initially equipped with drum-fed MG 15s. These were later replaced by four belt-fed MG 81s, which offered a higher rate of fire. Additionally, the aircraft was equipped with two bomb racks under each wing, capable of carrying a 50 kg bomb or, alternatively, smoke gas or chemical containers though the latter were never actually used in combat.
The rear gunner operated a drum feed MG 15 or 17. Source:www.luftwaffephotos.comThese would be on A-2 variant replaced by two faster-firing MG 81 that were instead belt fed. Source: www.luftwaffephotos.comA good view of the late improved twin machine guns in a rotating mount positioned on the dorsal side. Source: www.luftwaffephotos.comThe Fw 189 could also carry four 50 kg bombs. In this role as a light ground attack aircraft it achieved great success against Soviet partisans. Source: www.luftwaffephotos.com
For conducting reconnaissance operations, various camera equipment was utilized. Typically, an RB 20/30 camera was employed. However, depending on the specific task, this could be augmented or replaced by other models such as the RB 50/30, RB 21/18, or R.R 15/18. Additionally, the navigator was equipped with smaller handheld cameras. For communication, the FuG 25 radio was used.
Production Versions
Fw 189V– Small prototypes series
Fw 189A0 – Small pre-production series
Fw 189A-1 – Main production variant
Fw 189A-2 – Improved model with better defense armament
Fw 189A-3 – Dueal control trainer, limited production only
Fw 189A-4 – Ground attack variant armed with two 2 cm cannons
Fw 189 Trop – A small number of aircraft modified for use in North Africa
Prototype and Proposed Versions
Fw 189B – Trainer variant that was built in small numbers
Fw 189C – Ground attack variant, did not go beyond a prototype stage
Fw 189D -Experimental variant equipped with twin-floats,
Fw 189E – Powered by an As 411MA-1 600 hp strong engine. After the prototype was lost in 1943 the project was abandoned
Fw 189F-1 – Powered by an As 411MA-1 600 hp strong engines, A small series of 17 aircraft of this type were built in 1944
Fw 189F-2 – Slightly improved model, none were built
Fw 189G – Paper project powered by As 402 950 hp engines
Operators
Germany – Main use of this aircraft
Hungary – Operated less than 30 of these aircraft
Slovakia – Received 14 Fw 189A-1s between 1942 and 1943,
Romania – Used an unknown number but mostly for training
Bulgaria –Opertaed 14 such aircraft
Soviet Union – The Red Army on occasion managed to capture some Fw 189 that they put into use
UK – British Force captured at least one working Fw 189 after the war
Surviving aircraft
It is believed that only one Fw 189 aircraft has survived to this day, and it has a remarkable history. The aircraft was shot down by Soviet fighters in May 1943 near Murmansk in northern Europe. It crash-landed in the woods, resulting in the deaths of the navigator and the rear gunner. The pilot, Lothar Mothes, survived the crash landing and managed to reach the German defense lines two weeks later. Although the Soviets recorded the crash site, they did not recover the wreckage. It remained there until 1992, when British aircraft enthusiast and restorer Jim Pearce initiated a recovery effort. Using a helicopter, Pearce salvaged the relatively well-preserved Fw 189 wreckage and transported it back to the UK for possible restoration.
The aircraft was publicly displayed at the Biggin Hill Air Show in 1996, where pilot Lothar Mothes had the opportunity to see his lost aircraft once more. Despite his hopes, Pearce was unable to secure the funds necessary for a full restoration, so the aircraft was sold to G. Allen’s Flying Heritage Collection in 2007. Over the following years, the aircraft underwent nearly complete restoration. Hopefully, one day, this sole surviving Fw 189 will once again take to the skies.
The only known Fw 189 that is being under restoration. Sourcewww.scramble.nl
Conclusion
Despite its unusual design, especially for the early stages of the war, the aircraft proved to be remarkable in many respects. Its glazed cockpit provided an excellent all-around view. The engine was reliable, with no major mechanical issues reported. Although it had a somewhat fragile appearance, the aircraft was noted for its robust performance.
Although originally designed for reconnaissance operations, the Fw 189 also proved successful in various other roles. In conclusion, the Fw 189 was undoubtedly one of the best German aircraft designs to see service during the Second World War.
Type: High endurance experimental, reconnaissance aircraft
Number built: Three prototypes
Before the outbreak of the Second World War, the Luftwaffe (Eng. German Air Force) was undergoing a massive expansion. Numerous new aircraft designs were either being introduced into service or undergoing testing, with many being integrated into the military for various roles. A number of newly developed aircraft were also primarily used for evaluation and experimentation, and, there were also several designs created specifically to set records. One such aircraft, the Me 261, was built specifically at the request of Adolf Hitler to set long-range records. Due to its specialized role, and the fact that it was not initially ordered by the Luftwaffe, only three prototypes of the Me 261 were built.
The rather obscure Me 261 long-range transport and recconaissance aircraft. Source: alternathistory.ru
History
With the rise of Nazis in Germany, substantial financial resources were allocated to military projects. The Luftwaffe was founded, and saw massive expansion and the introduction of new aircraft designs. However, not all these designs were intended for pure military service. Some projects were mainly aimed at experimentation, and among these were aircraft designed solely to showcase technological advancements and break world records. This trend was quite common in the years leading up to the outbreak of the Second World War in Europe. For example, the Messerschmitt Me 209 was created to set a world speed record, with little to no concerns made over a possible military application.
Speed was not the only record to be pursued, there were others, such as long-range flight. This particular challenge fascinated Hitler, who in 1937, initiated the development of a long-range monoplane. Aside from the many things that might be learned from the experiment, Hitler envisioned this aircraft undertaking the long-range flight from Berlin to Tokyo for the 1940 Olympic Games, carrying the Olympic Torch from Germany over Asia. To meet this requirement, the initial requirements specified that the aircraft needed to have an operational range of over 13,000 km.
The Reichsluftfahrtministerium (RLM), or German Air Ministry, selected the Messerschmitt company for this task. Despite being a relatively small enterprise at the time, Messerschmitt had achieved great success with the Bf 109, one of the best fighters of its era. The official contract was signed on the 18th March, 1938. Under the designation P.1064, Messerschmitt presented a proposal to Hitler for a new aircraft. This aircraft was to be operated by a crew of five within a rather cramped, and elongated fuselage. Due to the aircraft’s specific role, the fuel load was prioritized over crew comfort. Hitler approved the proposal and ordered the construction of three prototypes. The project was subsequently renamed Me 261. Due to Hitler’s keen interest, the aircraft was nicknamed Adolfine by its crew.
In 1939, work began on the three Me 261 prototypes. Despite Hitler’s ambitions, the Me 261 was given low priority, and construction proceeded slowly, and anticipating a war with Poland, work on these aircraft was halted. However, recognizing its potential for long-range reconnaissance and the valuable information it could provide, work resumed in 1940.
The first prototype, Me 261 V1 (BJ-CP or BC-CP, depending on the sources), was flight-tested by Karl Baur in December 1940. The following year, the second prototype, Me 261 V2 (BJ-CQ), was tested. The V2 featured a glazed observation dome on the dorsal fuselage, replacing the rear dome used on the V1. The construction of the third prototype, Me 261 V3 (BJ-CR), faced delays and only completed its test flight in 1943. This version was distinct from the earlier prototypes, featuring a larger crew capacity of seven and being powered by two 2,950 hp DB 610 engines. On the 16th April, 1943, Karl Baur conducted a ten-hour test flight with the V3.
The last of the Me 261 was the V3 prototype, which was powered by stronger engines. Source: airpages.ru
Technical characteristics
Unfortunately, since the Me 161 did not progress beyond the prototype stage. It was designed as an all-metal, long-range transport and later as a reconnaissance aircraft. The fuselage was slim but cramped, made of metal, and covered in duralumin.
The wings of the Me 261 were constructed using a metal frame with a single spar. They were then covered with flush-riveted, stressed-skin metal panels. Notably, the section of the wing closest to the fuselage had a thick profile, which tapered to the wingtips. This design was intentional, as it allowed for a large fuel storage area. The aircraft also featured a twin-rudder tail at the rear.
For its long-range flight operations, the Me 261 had a crew of five: a pilot, co-pilot, radio operator, navigator, and flight engineer. The pilot and copilot sat side-by-side in the cockpit with the radio operator in a central compartment, and the flight engineer and navigator seated in the rearmost compartment, where the aircraft’s bunks were also located.
The first two prototypes were powered by twin 2,700 hp DB 606A/B twenty-four-cylinder engines. These engines were essentially two twelve-cylinder DB 601 engines coupled together to drive a single shaft, requiring two separate radiators and oil coolers. Each DB 606A/B engine was housed within a large nacelle and used four-blade propellers with a diameter of 4.6 meters.
The Me 261 DB 606A/B twenty-four-cylinder engine consisted of two coupled twelve-cylinder DB 601 engines. They worked well on the He 261 and no major issue was reported with it. Source: oldmachinepress.com
Despite frequent mentions of the aircraft being overburdened, sources do not specify a consistent maximum takeoff weight. Additionally, the total fuel capacity is also unspecified. Depending on the sources, the operational range varies from 11,000 to 13,200 km.
To accommodate the aircraft’s weight, it required large-diameter landing wheels that could retract up to 90 degrees into the wings. In addition to these, it had a fully retractable tail wheel retracted towards the front of the aircraft.
The Me 261 was designed as an all-metal, long-range transport and later as a reconnaissance aircraft source: WikipediaThe first two prototypes were powered by twin 2,700 hp DB 606A/B twenty-four-cylinder engines. To cope with their weight, it was provided with two large-diameter landing wheels. Source: planehistoria.comSide view of the second prototype. Source: alternathistory.ru
Fate
Despite demonstrating some potential for long-range reconnaissance, the Me 261 was ultimately rejected from service due to the additional equipment requirements that would have further strained its already overburdened airframe, thereby compromising its flight performance. Despite its cancellation, the V3 prototype (and possibly the other two prototypes) saw operational use as reconnaissance aircraft during the war. In July or April of 1943, the V3 suffered an accident during landing that heavily damaged its landing gear. Although repaired and returned to service, the V3 was eventually scrapped by order of the RLM.
The V1 aircraft was lost during an Allied bombing raid on the Rechlin test center in September 1944, while the V2 was captured by the Allies at the same location in April 1945. Neither prototype survived the war; the captured V2 was scrapped a few weeks after its capture.
The V3 aircraft was damaged during a landing accident but was repaired and put back into service. Source: www.destinationsjourney.comThe V2 was captured by the Allies and was eventually scraped. Source: planehistoria.com
Conclusion
The Me 261 was an aircraft that was not ordered by the Luftwaffe as a military aircraft and thus received low priority. Despite its initial potential for use as a reconnaissance aircraft, it quickly became evident that it would not be feasible for adoption in this role due to its considerable weight. Ultimately, only three were built, and none of them survived the war.
Me 261 V3 Specifications
Wingspans
26.9 m / 88 ft 1 in
Length
16.7 m / 54 ft 9 in
Height
4.72 m / 15 ft 5 in
Wing Area
76 m² / 817.8 ft²
Engine
Two 2,950 hp DB 610 engines
Endurance
24 hours and 36 minutes
Maximum Speed
620 km/h / 385mph
Cruising speed
400 km/h / 248 mph
Range
11,000 km / 6,831 miles
Maximum Service Ceiling
8,250 m / 27,060 ft
Crew
1 pilot
Armament
None
Illustration
Credits
Article written by Marko P.
Edited by Henry H.
Illustration by Oussama Mohamed “Godzilla”
Source:
D. Herwig and H. Rode (2000) Luftwaffe Secret Projects Strategic Bombers 1935 to 1945, Midland Publishing
D. Nesić (2008) Naoružanje Drugog Svetsko Rata-Nemačka. Beograd
D. Monday (2006) The Hamlyn Concise Guide To Axis Aircraft OF World War II, Bounty Books.
J. R. Smith and A. L. Kay (1972) German Aircraft of the WW2, Putnam
B. C.Wheeler, German Fighters of WWII, Aeroplane Special
R. Jackson (2005) Infamous Aircraft, Pen and Sword
M. Griehl () X-planes German Luftwaffe prototypes 1930-1940, Frontline Book
W. Green (1970) Warplanes of the Third Reich, Doubleday & Company
Reconnaissance and Infantry Liaison aircraft: 227 Built
Intro
The Junkers J.I represented a massive leap in aircraft design philosophy, while also being a truly exceptional combat airplane in its own right. Designed to fly close along the frontlines and support infantry operations, the J.I was uniquely capable thanks to its armor plated fuselage and duralumin construction. It was exceptionally durable, able to resist both machine gun fire and weather that kept its wood and canvas contemporaries grounded. As a reconnaissance, supply delivery, and ground harassment aircraft, the Junkers J.I was both the best of its day, and a sign of things to come.
Professor Junkers
Hugo Junkers holds a position of immense importance in aviation, being the creator of the all-metal airplane and the founder of one of history’s most famed airplane firms. Junkers himself was born in February of 1859 in the Rhineland Town of Rheydt, the third of eight children. He would not stay and work at the family textile company after leaving school, instead going on to study at the Universities of Berlin-Charlottenburg, Karlsruhe, and Aachen. He completed his studies in 1888, obtaining a degree as a Baumeister, or factory official, and entered the field of gas engine design in Wilhelm von Oechelhauser’s firm, the Deutsche Continental Gasgesellesschaft. In time, the two of them would go on to found a new joint venture, the Versuchsstation fur Gasmotoren von Oechelhaeuser und Junkers, a laboratory for gas engine development. His work at this laboratory would go on to see him develop the first opposed piston, two stroke engine, calorimeters for testing gasoline, and many smaller domestic appliances from gas stoves to water heaters. It was in 1895 that he founded Junkers and Co. in Dessau to manufacture these appliances, this venture also being the foundation for his later efforts in aviation.
Hugo Junkers circa 1920, following the end of the great war his firm built the first modern airliners. (wikimedia)
In 1897, he would both be made a Professor of Thermodynamics by the University of Aachen, and he would marry his wife Therese Bennhold. At the university, he was made head of the engineering laboratories, and founded his own workshop there to secure a place to continue his experiments. His work there would progress quickly from both his personal drive, and considerable funds from the patent revenue from the products he developed. This combination of experience with metalworking, a secure lab, and his considerable engineering talents, would see Prof. Junkers enter the field of aviation well equipped.
It was in 1910 that his colleague Prof. Hans Reissner would suggest he venture into the field of aviation, and the two would work together at the University of Aachen, building an experimental wind tunnel, and a very early all-metal airplane prototype. As these projects continued, he would go on to move all of his work to his own laboratory in Dessau. At this new lab, Dr. Junkers combined the experimental wind tunnel work from Aachen with his theories on aircraft design, notably, that of all-metal construction.
The Tin Donkey
Prior to the 1920’s the conventional materials and layout for airplane construction was a biplane made from wood, and skinned in fabric, with struts and bracing wires providing the structural support for the wings. Prof. Junkers felt that the inherently high parasite drag of biplanes, combined with the external supports, was a major handicap in aircraft design, and he believed that metal construction would completely revolutionize airplane development. Using a thick, rigid wing that was internally supported, the resultant aircraft would be aerodynamically cleaner, and the internal space within the wing could be used to store fuel or cargo.
His first major effort to build such an aircraft began near the end of 1914, as a privately funded venture with the assistance of the engineers Otto Reuter and Otto Mader. Initially, the project was funded by a large influx of cash from Junkers and Co., but they received Military support by June of 1915, and they were contracted by the Army to produce the new aircraft. Supplied with tooling and material’s from Dr. Junker’s own enterprise, they proceeded, and in four months they had built their plane.
The J.1 during its Army test flight. Despite their extremely similar designations the J.1 and J.I are completely different aircraft. (SDASM)
The Junkers J.1 was as revolutionary a design in airplane development as had been seen since the invention of the plane itself. It was a steel mono winged plane, and the first to feature cantilevered wings, which were spar-less and consisted of a steel framework welded to an inner, corrugated skin, over which it was skinned in smooth sheet steel. Aluminum alloys were sought after, but in the end, steel was all that was available. It proved to be an extremely sturdy, but also very heavy aircraft, weighing in at 1010 kg when set for takeoff. Beyond the original benefits Prof. Junkers envisioned for his new planes, the war, and the subsequent mass production of airplanes had shown there were more practical challenges in operating wood and fabric aircraft. As the number of airplanes increased, storage space became a premium, and canvas biplanes cannot be allowed to sit in poor weather lest their wooden frames and canvas skin become warped. Pilots in combat also soon discovered their greatest fear beyond the enemy’s guns, fire, which no matter how minor at first, often became a death sentence to anyone who’s plane began to burn. However, a metal aircraft with a canvas cover can sit in nearly any weather without issue, and a fire aboard such a plane isn’t liable to spread rapidly. A pilot could ditch his plane in most circumstances, saving him from a very grisly end.
The J.1 was taken to Doberitz where it would be tested by the Army, as Dessau lacked a proper airfield. Lt. Theodore von Mallinckrodt of the German Army would be the first to fly it, finding some novelty in a metal aircraft. Much of the test team was critical of the new plane, nicknamed the ‘tin donkey’, feeling that it would be too heavy to fly, and that it was suicide to fly a plane without bracing wires. Unbothered, the lieutenant began with short hops along the ground before the first full flight test in December. It flew well at first, but with harsh vibration being noted once the plane was brought to high speed. The Army team found the flight characteristics acceptable, but found that the wings had compressed the fuselage of the plane. They were also critical of its extremely low climb rate and lackluster turning performance, but all were impressed when the aircraft achieved a speed of 170 km/h in level flight, making it the fastest plane yet built. Even with its modest 120hp straight 6 Mercedes engine, its speed managed to impress ace pilot Oswald Bolcke who had a chance to inspect the aircraft the next year.
As an experimental aircraft, it was an undeniable success, having proven both that an all metal aircraft was well within the material restrictions of the time, and that massive reductions in drag were possible using this construction. The experimental plane was thus followed by a fighter aircraft, the Junkers J.2. Similar to, but far more refined than the ‘tin donkey’, the J.2 was the first all-metal fighter aircraft ever designed, but it was never accepted for service and the Idlfieg lost interest when it was clear certain performance metrics could not be met. As with the J.1, the fighter still used a 120hp engine, and with its smaller wings, it possessed even higher wing loading, as well as the sluggish climb rate of the experimental J.1. A new 160hp Mercedes engine also failed to bring the aircraft up to the necessary performance requirements.
The J2 featured some very modern design choices, including an underslung mid fuselage radiator. (Wikimedia)
However, the J.2 was not the only project of that year, as another design featuring new construction methods was also in the workshop through 1916. The Junkers J.3 would never be completed, but it was the first Junkers project to feature the famous corrugated duralumin skin. Given that it was still a fairly soft material, the bends in the skin would give it the necessary strength to not only act as lifting surfaces, but also structurally reinforce the entire structure by taking shear forces. It would also use a new tubular framework for the wings, built up around a set of stronger tubular spars. While this aircraft would never be finished, these new features would be carried over into the firm’s next design, which would prove to be its first major success.
Reconnaissance under fire
By the end of 1916, not only had the war on the Western front grown into a vicious battle for trench lines between an unsurvivable no man’s land, but aircraft had been proven to be an essential means of understanding the depth of this new and horrible form of warfare. Enemy trenches could only be surveyed from high ground, vulnerable to enemy fire, and the build up of forces were completely hidden from their traditional opponent, cavalry. Aerial reconnaissance thus became invaluable in mapping out labyrinthine trenchworks, finding the positions of enemy guns, and observing the movements of the enemy away from the front lines. Two-seater recon planes were adopted, and fighters were later developed to shoot them down and seize control of vital airspace, but through 1916 the offensive use of aircraft began in earnest. While a canvas biplane had no hope of attacking reinforced trench lines, unable to resist machine gun fire, they could attack enemy infantry at the foremost positions or as they moved through no-man’s land.
While Germany had employed ground attack squadrons in early 1916, it was the use of British infantry contact patrols using fighters and two-seaters through the battle of the Somme that spurred them to develop these tactics further. Moreover, they wanted specialized infantry harassment aircraft beyond their unmodified two-seater biplanes. Losses among these units were high, and the Idflieg, or the Inspector of Aviation forces, produced specifications for a specialized Infantry aircraft. This new plane was to be equipped with armor plate which would enclose the pilot, gunner, engine, and fuel stores with a minimum thickness of 5mm. They were also given a low minimum ceiling of 1500 meters, given they were designed for ground attack and low level reconnaissance. To make a note, this series was designated the I-type, but given the older German writing of I, it appeared as a J, and this series has subsequently been noted as the J type ever since.
The Halberstadt CL.II was built for reconnaissance and ground attack, though its wooden construction left it vulnerable to ground fire. (The Great War Channel)
Albatros and AEG both promised armored versions of their successful C.XII and C.IV models respectively, but Junkers approached the specification with a new concept entirely. While he was forced to build a biplane according to the Idflieg’s specifications, he was still granted considerable leeway with the design. Junkers himself would not be as hands on with this project as he had been the J.1 .2 and .3, over its necessity of being a biplane, so instead he elected to put the project in the hands of a team of engineers. The design of the Junkers J 4, would be managed by Dr-Ing Otto Mader, along with teams headed by the engineers Otto Reuter, Hans Steudel, and Franz Brandenburg.
While it was a biplane, the new aircraft still drew from the experiences and design philosophy of previous projects. Its wings featured corrugated duralumin skin over the multi-sparred, tubular duralumin framework and were in a sesquiplane arrangement, with the lower wing being significantly smaller in length and chord than top. They were connected by an inner set of struts, but being self supporting, they needed no bracing wires. Its armor protection was comprehensive, half of the fuselage consisted of an octagonal steel compartment which contained the engine, pilot, gunner, and fuel. Rear of this armored section was a tubular frame which ended with a conventional tail section. Unlike Junkers’ earlier underpowered efforts, this new plane was equipped with a significantly more powerful 200hp Benz B.IVa straight six engine. This model was among the more powerful aviation engines in German service, excluding those built for airships.
The massive Junkers J.I featured heavy armor protection and structurally redundant wings, it was exceptionally resistant to small arms fire. (SDASM)
Three prototypes were ordered on November 3rd 1916, and delivered the following January as J.425/17, 426/17, and 427/17. On the 28th, one prototype with the 200hp Benz IVa was flown by German officer Arved von Schmidt without armor plate for testing. Taking off from snow 20 cm deep, Schmitt took the plane up to 250 meters and reached a speed of 155 km/h, finding that the aircraft was stable, if tail heavy. The demonstration was impressive enough to get an order for 100 planes on February 19, 1917. The Junkers J 4 was thus accepted into service as the Junkers J.I, under the German Air Service’s designation system. Some minor changes before mass production included a redesigned vertical stabilizer, overhung balanced ailerons, and a balanced rudder.
Given that the workshops at Dessau had yet to receive an order for a mass produced aircraft, building the new planes at a fast enough rate proved difficult. There were two major challenges, first was that while Prof. Junkers was a brilliant inventor, he and his firm were fairly inexperienced when it came to aircraft production, and second, given that this was the first mass produced-all metal aircraft, the methods of mass producing an all metal plane would be learned with it. The Army foresaw this becoming an issue and brought in Anthony Fokker, a master in aircraft production, in order to set up an aircraft factory alongside Junker and Co. in Dessau. The new Junkers Fokker Werke AG. was thus established to build a completely new production line for planes, as subcontractors could not be used to build components, as was the case for wooden planes. The arrangement worked well, with Junkers and Co. engaged in the experimental work and providing designs, while JFA handled the job of meeting the production orders, which in total amounted to 350 planes. In spite of the new facilities, bottlenecking, and the loss of one of the armor plate manufacturers to flooding, would restrict the number of planes built to far below this number.
The Flying Tank
The first J.I to see service was the first off the production line, no. 100/17, which was sent to the front in August of 1917 where it served with the Flieger-Abteilug 19. On one of its first missions, the unit commander flew the plane on a low altitude recon mission near Ypres, Belgium, and found that the plane was not only faster and better handling than the Albatros and AEG J types, but that he had received 11 hits to his aircraft, without issue. FA-19 continued to fly the aircraft, and on one occasion on September 23, 100/17 was hit 85 times, without suffering serious damage.
The new armored two-seater would prove phenomenal, both in its resilience to enemy fire and less-than-ideal field conditions. (Wingnut Wings)
By October, the unit had accumulated enough experience to give an account on using the aircraft. In addition to its excellent protection from bullets and shrapnel, the plane could be flown confidently in weather that kept all others grounded, and it had an excellent glide ratio, which meant that in the event of engine failure, a pilot could still glide his plane back over to friendly lines and evade capture. However, it also required a long take off run and it had a higher landing speed than most aircraft. Luckily, these were issues that could be solved by instruction from more experienced pilots, and practice. Overall, the Junkers J.I proved to be an excellent aircraft from the appraisal of FA 19.
After its front line trials with FA 19, the Junkers J.I would begin to be distributed to the Schutzenstaffel, or protection flight units, whose job was to patrol the area between the opposing trench lines. This entailed a variety of missions from escorting two-seater recon aircraft to ground attack missions, with each unit consisting of some sixty seven men and six planes. Up until 1918, this role was filled by more versatile two seater aircraft like the Halberstadt CL.II, but come the winter of 1917, a small number of armored J type planes were entering service with them. This included four Junkers J.Is issued to the Schusta in December of 1917, a number which would grow to sixty by August of the following year, alongside 186 armored planes of other manufacturers. The nature of this change was revealed more fully when the Schusta were redesigned Schlachtstaffel, or attack flights, during the March offensive, as their escort role was dropped.
The Junkers J.I was used as a support aircraft whose role was primarily reconnaissance and infantry liaison work. The rear seat was equipped with a 7.62mm machine gun, and occasionally a 20mm Becker auto cannon in service, but ground attack was a secondary use of the aircraft. Its most important job was to survey areas of the battlefield that were in contention, to take photographs of bottlenecks in the terrain, or send reports of urgent developments directly to divisional HQ’s via wireless telegraph. First and foremost, the mission of J.I crews was to assist in communicating the state of the changing battlefield, an important task as in the spring of 1918 the war was again entering a mobile phase. Likewise, messages were also delivered from the HQ to the frontlines, as the telegraph wires were easily knocked out by artillery fire. Aircraft were directed by signalers, attached to infantry brigades, by the use of flares, lamps, and fabric strips to mark the position of friendly forces and enemy positions. Working with the signallers, the J.I’s crews could deliver messages to forward commanders from their headquarters, as well as supplies, like food and ammunition, to difficult to reach frontline positions.
A J.I crew prepares to drop canned food, water, and bread to a forward unit, an often overlooked task. While supply runners may not have been able to reach certain positions in daylight, crews like these could drop supplies from behind their aircraft’s armor plate. (SDASM)
In an offensive role, the most powerful tool accorded to the plane was its radio, which could be used to direct artillery, and could also be used to direct the plane to tenuous areas of the frontline to render support directly. While it was typically the job of the Schlachtstaffel to render support near friendly forces, and harass traffic behind the enemy lines, the lack of a bomb load and a standardized forward gun arrangement meant the offensive capabilities of the Junkers J.I were quite limited. The observer/gunner could engage using the mounted machine gun, but they were totally overshadowed by the lighter, unarmored two-seaters, which carried nose mounted guns and could be fitted with bomb racks.
In service, crews rendered excellent service with these aircraft, and many swore by them. One Lieutenant Wagner of Flieger Abteilung 268 flew a mission on March 28th, at an altitude of 80m over the front. During the mission, his observer was wounded, and his own helmet was shot through, but his plane, No. 128 received over 100 hits which did nothing to impede it. The Leutenant was amazed by this, as he’d overflown the enemy trenches, something that would have been suicidal in nearly any other aircraft. These encounters were fairly frequent, as one of the main tasks of the Junkers J.I units was to overfly the enemy trenches and locate the position and size of enemy reserves.
Ground crew maneuver a J.I in a photo for publication. (Wingnut Wings)
The Junkers J.I was considered totally unsuitable in aerial combat, given its low speed and ponderous maneuverability. Though, there is one known encounter between an American fighter and a Junkers J.I, which might very well be the only air engagement with the rare armored scout. Major Charles Biddle of the USAS 103rd Squadron, was flying his Spad XIII on May 15, 1918. While returning towards his side of the lines, after a weapon malfunction ruined an interception of a German recon plane, he encountered a ‘peculiar two seater’. Coming down to take a look, it lacked the hallmarks of most German planes of its type, but its unmistakable crosses marked it as an enemy plane. He also noted its extremely low speed, calling it ‘the slowest bus you ever saw’ and remarked he made two miles for its one. The Major dove on the plane and took up position fifty yards below its tail, then he made a mistake. He pulled up to take a shot at the Junkers, but he had misjudged the distance and ended up in the propeller wash of the German two-seater, shaking his aircraft and throwing off his aim. He dove to escape the view of the enemy gunner, but now was underneath his target. The German pilot then began to turn to bring the Spad into view of his gunner, and after several swerves to try to shake the American from beneath his plane, he succeeded. Now out of the Junker’s blind spot, Major Biddle was now the target of the gunner who, and in the words of the Major himself found himself in the crosshairs of “some of the quickest and most accurate bit of shooting that I had come up against”. The shot put a hole through the Spad’s radial engine and into Biddle’s left leg above the knee. He dove, to escape the gunner and head for friendly lines, wounded and with his engine failing. He landed in a field of shell craters, his plane turning over, in a fortunately escapable wreck. Major Biddle was likely the opponent of pilot Feldwebel Ernst Schafer, and Lieutenant Wilhelm Paul Schriber of Flieger Abteilung (A) 221, who subsequently overflew the plane and took photographs of their victory.
Construction
The all metal Junkers J.I used duralumin and steel for nearly everything but the engine braces and rear fuselage skin. (Peter M. Bowers via Fredrick Johnson)
The Junkers J.I was an all metal aircraft built from nickel-steel and duralumin. The forward fuselage was an octagonal compartment built from steel with an armor thickness of 5mm, though late production aircraft used a thickness of 3.5mm for their sides, and 6mm for the rear. The armor was impervious to small arms fire, and enabled the aircraft to overfly enemy trench lines at low altitude. The entire forward fuselage was built up around four large duralumin longerons, and joined to the rearward section, which had a tubular construction. The rear section was skinned with fabric, though the tail section was of duralumin construction with the rudder initially being fabric skinned, before it too was changed to corrugated duralumin later in production. Some very late examples of this aircraft had a corrugated aluminum skin over the rear fuselage, though these do not seem to have been delivered to the Army. The fuselage was joined to the wings by a series of steel tubes covered with protective aluminum fairings, and sat atop the lower wing. The undercarriage of the aircraft featured a conventional construction of two vees, connected to the axle through a shock absorber. The axel was a steel tube 9ft long, with it and the other structural elements being covered by aluminum fairings. The tail skid was of a simple wood construction.
The armored fuselage was manufactured at the Dillinger Panzerwerk from high tempered steel. (Flight)
The aircraft had a sesquiplane wing configuration with the upper wing having a span approximately 38% longer than the lower. The fine details are disputed, but the upper wing had a span of some 16m and a chord of 2.50/2.25m, the lower a span of some 6m and a chord of 1.50/1.08. The upper wing had a set of balanced, hanging ailerons. Both the upper and lower wings were built in three sections, consisting of an inner panel which was attached via steel tube struts to the fuselage, and two outer panels. The wings were built around multiple tubular spars made from 40mm tubular duralumin, with the upper wing possessing ten, the lower only five. These spars ran the length of the wing and were connected to a number of steel brackets which connected them to a framework of smaller tubes, which joined the spars and stiffened the wing. This design gave the wing both incredible strength, which needed no structural struts or bracing wires, and was extremely resilient to gun fire, as only when many of the brackets or spars were damaged would the wing become compromised. The wings were skinned in .3mm duralumin sheets which were corrugated to strengthen them, as the duralumin alloy was very soft, and was used as a structural element of the wing which bore shear forces. One aircraft, no. 749/18, was equipped with long span upper wings to lower the take off run of the aircraft, the modification did not make it into production.
The upper wing had ten tubular spars, not counting the aileron rod, and damage to any one of them was mitigated by others and the web of brackets through the wing. (Flight)
The control system of the aircraft also represented another departure from the conventional methods, eschewing the traditional wire control system for a more resilient push-rod system. The control systems were a duralumin stick and foot pedals for the rudders. The ailerons spanned the entirety of the outer wing panels and were connected to an aileron tube which ran parallel with the structural spars, which was articulated by linkages to the central control stick. The elevators had exterior stranded wires, which were articulated by the push rod system within the fuselage of the aircraft. The rudder operated much the same way. The cockpit furnishings were basic and the instrumentation consisted of a tachometer and fuel gauge, with a compass mounted on the wing.
The Junkers J.I was equipped with a 200 hp straight 6, Benz IVa engine. The similar 230 hp model had a dry weight of 370kg, a bore of 145mm, a stroke of 190mm, and a compression ratio of 4.91:1. It measured 1,990mm long, had a width of 530mm, and was 1150mm tall. It was water cooled, with the radiator mounted above the engine along the upper wing, its slats controlled by means of a lever above the cockpit. The fuel tank was a 98 liter seat-tank which took the place of the pilot’s typically wicker chair. It was made of sheet brass and had a channel through the back for the control rods for the tail section of the aircraft. It was divided into two sections so that a single bullet hole wouldn’t drain the entire tank. A pump drew fuel from this tank and delivered it to the gravity feed tank in the upper wing, if the pump broke the system could be driven by hand. A 38 liter oil tank was located behind the instrument panel. The engine was fitted with a 2.9m wooden propeller with a pitch of 1.9m. They were manufactured by Axial-Propeller Werke of Berlin and were issued with prop-spinners. The engine bay had two articulated panels which swung rearward to allow easy access to the Benz IVa engine, which was mounted atop two wooden engine bearers made from solid ash.
A Telefunken radio set, amplifier, and assorted gear. (stone vintage radio)
The plane could carry a variety of equipment for its missions, though these were mostly commonly a camera, and a wireless telegraph set. The observer, who was also the commander of the aircraft, operated both of these. The camera was a separate piece of equipment carried into and out of the aircraft by the observer and set within a built-in mount. This was set in the fuselage behind the armored section and accessible through a sliding sheet metal panel. The telegraph set was installed within the armored fuselage. Built by Telefunken, the W.T. was standardized across the service. It consisted of a sturdy, protected case and a 37 m aerial, with the alternative Huth made transmitter having a 38 m length.
In regular service, the aircraft carried no forward mounting weapons and carried only a rear mounted gun within a swivel mount, which was set within a turning wheel around the observer’s seat. This allowed him to traverse the gun 180 degrees and take aim at targets above and below the aircraft. This was a largely defensive weapon, but could also be used in a limited anti-infantry role. The gun was either a parabellum MG 14 or, more rarely, a Becker 20 mm autocannon.
An observer with an MG 14. Like the British Vickers gun, it was a redesigned Maxim variant that reduced the size of the weapon significantly. (airwar.ru)
The MG 14 was a 7.62mm machine gun derived from the common MG 08 in service with the German army. However, it was much more compact as the toggle-lock mechanism was reversed to a downwards action, it used an internal spring, and the ejection system was made to drop casings out the bottom of the receiver rather than the front. The result was that the receiver was narrower and slimmer compared to the more cumbersome infantry machine gun. They were also equipped with a buttsock and pistol grip, with some examples being equipped with an Oigee magnified reflector gunsight. The water cooling system was not used, and the jacket was perforated to reduce weight. The gun was fed from a cloth ammunition belt which was spooled within a metal drum, with one carried on the weapon and two in reserve. It had an adjustable rate of fire between 600-700 rounds per minute. An experimental armament of two fixed, downward facing machine guns for trench strafing was installed on one aircraft, but was not used in service.
A very advanced weapon for its day, the Becker autocannon would go on to influence the development of the 20mm Oerlikon gun. (mnemonic-shapeways)
The 2cm Becker autocannon was a powerful, if cumbersome weapon. It operated on API blowback and was loaded with ten and fifteen round box magazines. Ammunition loads could consist of solid shot or high explosive shells, which could prove absolutely devastating against canvas biplanes and effective at harassing infantry. It did however have a relatively low muzzle velocity of 490m/s and a slow rate of fire, between 250 and 300 rpm, depending on the manufacturer. These were installed aboard a few Junkers J.Is, but the machine gun armament was far more common.
Each plane came with a repair kit for surface damage and the following spare parts: 1 undercarriage axle, 2 spare wheels without tires, 1 tail skid with spring, 1 complete set of structural struts and associated connecting parts, 2 trestles, 1 lifting jack, 1 set of tools, and riveting materials.
Flying and Servicing
The Junkers J.I was a ponderous, but steady aircraft to fly. Its top speed was decent for a two-seater, at 145 km/h, but its climb rate was extremely low. It took 77 minutes to reach 3km, though in service it typically operated below 1km, which only took 12 minutes to reach. Coupled with its wide turning circle, the plane earned itself nicknames like the flying ‘Tank’ or ‘Mobelwagen’, or translated, moving van. Given its low speed, it was typically given escorts. Its controls were responsive, though were different enough from its contemporaries to need some practice getting used to. The stick for instance could become shaky and uncomfortable to use if inputs were harsh and jerky. Its landing speed was also notably high, and it required a longer run for take off and landing, preferably made on compacted ground. These issues aside, most pilots were fairly confident in the aircraft, and when flown it was a very stable, especially in the wind and rain, which kept everything else grounded.
The Junkers J.I was often a difficult adjustment for pilots, though its stable handling characteristics and robust construction made for a safe re-learning period. (Wingnut Wings)
Crewmen were also very appreciative of the incredible amount of protection the aircraft afforded, allowing missions that would have otherwise been considered suicidal to be completed with a high level of confidence. Not only were all of the critical components of the aircraft all located within a nearly impervious armored compartment, but the wings were extremely durable and unlikely to fail even when struck continuously by machine gun fire. Perhaps best of all, the risk of fire damage was extremely low, and the fire resistant construction would give the pilot time to set the plane down. When all else did fail, and the engine gave out, the aircraft had a good glide ratio, and despite its weight, it could travel some distance without power, allowing the crew to cross back to friendly lines, or look for a safe place to ditch. Overall, the Junkers J.I was in all likelihood, the most durable aircraft to see action during the Great War, and certainly the best of the armored J type aircraft in service with the German Luftstreitkrafte. In the end, only one confirmed combat loss was noted in over its one year of service, performing one of the most dangerous missions.
A high landing speed and a need for compact ground meant that numerous J.I’s that were taken out of action in accidents like these. Few were serious and the planes were typically sent back to depots for repair. (Wingnut Wings)
Its metal construction also gave a number of advantages in the field. Most convenient of all was the fact that it could be stored outside in bad weather. While wood and canvas could not be allowed to stay wet and needed shelter from the rain, a Junkers J.I only needed to have its engine and crew compartments covered. The plane was also designed from the outset to be easily transportable, the wings, tail section, and struts could be easily decoupled and placed alongside the fuselage, allowing it to easily fit in a railcar or trailer. The lack of bracing wires made this easy, and also removed a great deal of the maintenance work. Basic repair tasks were fairly simple, and every plane came with a patching kit that made combat repairs easy, but specialized training was needed for larger components. Extensive repairs usually required the planes to be sent to depots where specialists could work on them, and was usually done in the case of extensive damage to the wings or fuselage. Larger single-piece components, like the struts, were simply replaced with spares if damaged.
Conclusion
The Junkers J.I proved to be a pivotal design in airplane development, as it not only introduced to the world a mass produced all-metal plane, but it also incorporated so many other innovations, such as its cantilevered wings and use of corrugated duralumin. They would provide a practically indestructible plane to what would have been very vulnerable crews, and in the years to come, these features would put Junkers well ahead in the civil air industry.
Junkers J.I
Engine
Benz BIVa
Engine Maximum Output
200hp
Empty Weight
1766kg
Combat Load
410kg
Maximum Speed
155 m/h
Combat Ceiling
3km (operational)
Armament
1xMG 14 or 1 x 2 cm Becker Autocannon
Crew
1x observer 1x pilot
Length
9.20m
Height
3.45m
Wingspan
16m
Wing Area
50.84m
Illustrations
J.100/17 was the first to enter service with the Army testing it in frontline use in the Autumn of 1917.
As the Junkers armored planes began to enter more widespread service, crews began to fashion their own camouflage schemes. Mauve stripes became a fairly common pattern among these aircraft. Flieger-Abteilung 17, 1918.
Late production aircraft had their fabric skinned vertical stabilizers and tail sections replaced with duralumin sheeting. The fabric sections of the aircraft often went unpainted, and left in the dyed lozenge camo patterns it was delivered with. Unknown unit, based at Villiers de Chevres, 1918.
Credits
Written and edited by Henry H.
Illustrated by Arte Belico
Sources
Primary:
Instruction Manual for Junk. J. I Armored Biplane. Junkers-Fokker-Werke A.G. Dessau. Translated and reproduced in Flight The Aircraft Engineer & Airships Vol. 12. 1920.
Report on the Junker (sic) Armoured Two Seater Biplane, Type J.1*. Ministry of Munitions. Reproduced in Flight The Aircraft Engineer & Airships Vol. 12. 1920.
Secondary:
Junkers Aircraft of WWI Vol 1 Junkers J.1-J.4. Owens, Colin A. Aeronaut Books. 2018.
Kingdom of Hungary (1938)
Reconnaissance Aircraft & Light Bomber – 128 Built
The Weiss Manfrédfrom WM 21 two-seat reconnaissance aircraft. [lasegundaguerra.com]The Hungarian Aviation industry was rather small in scope in comparison to many in Europe. Regardless, it managed to introduce a number of domestic development projects. One of these was the Weiss Manfréd from WM 21, a two-seat reconnaissance aircraft of which some 128 were produced during the Second World War.
History
In the years after the First World War, Hungary was strictly forbidden from developing combat aircraft. To overcome this limitation, the Hungarians did what the Germans did and began developing a civil aircraft industry to help gain valuable experience in aircraft design. One of these companies that would emerge during the late 1920s was Weiss Manfréd, from Csepel near Budapest. In 1928 this company began working on the design and construction of gliders and engines.
Due to an initial lack of funds, the Hungarian Air Force was forced to rely on foreign aircraft that were bought in relatively small numbers. For example, by 1937 Hungarians had only around 255 operational aircraft. To help gain more experience, Weiss Manfrédfrom began producing Fokker F.VIII and C.V aircraft under license. When sufficient funds and experience were gained, Weiss Manfrédfrom engineers in 1935 began working on a new reconnaissance biplane design. They decided on a simple design, reusing some components that were already in production, and it would be a further development of the already produced WM 16 model, which was heavily based on the D version of the Fokker C.V.
The WM 21 predecessor was the WM 16 model which in turn was based on the C.V aircraft. [Wiki]When the prototype of the new short-range reconnaissance aircraft, WM 21 “Sólyom” (Falcon) was completed, it was presented to Hungarian Air Force officials, who were generally satisfied with its performance and gave an order for some 36 WM 21 in 1938. At that time, massive funds were being allocated to the development of the aircraft industry. In addition, Hungarian Air Force officials wanted to decentralize aircraft production. For this reason, the WM 21 was to be built by various other companies, including twelve to be built by MÁVAG and MWG
It was estimated that the production would commence during April and March 1939. It took longer to do so, with the first aircraft being available at the end of 1939. While the aircraft was slowly put into production, the Hungarian Air Force asked for more aircraft to be built.
In Combat
The WM 21 was primarily designed as a reconnaissance aircraft but due to a general lack of other aircraft types, it would be adopted for other roles. Its first combat use was during the so-called Transylvanian Crisis. Namely, in June 1940 Hungarian government demanded that Romania return the Transylvania region to them. Since it looked like war was coming, Hungarian Air Force began relocating its aircraft close to the Romanian border. Thanks to the commencement of negotiations, no war broke out. But by late August the Hungarians ordered a complete mobilization as the negotiation led nowhere.
While primarily intended to be used as a reconnaissance airfare it would be also used in other roles even as a light bomber. [lasegundaguerra.com]Germany did not want to lose its vital Romanian oil supply and forced both countries to begin new negotiations under German and Italian supervision. While the negotiations were underway, some smaller air skirmishes occurred. On the 27th of August, a Romanian He 112 attacked a Hungarian Ca 135 aircraft, which was heavily damaged and one crew member was killed. The following day a WM-21 piloted by Captain János Gyenesin, dropped bombs on the Romain Szatmárnémeti airfield in retaliation for the lost airman. On its way back it crash-landed, damaging the aircraft. In the end, Hungary emerged as the victor, gaining large territorial concessions over the Romanians.
When the April War broke out on the 6th of April 1941, between the Kingdom of Yugoslavia and the Axis, the Hungarians joined the offensive. They employed their 1st Air Brigade which had some 60 aircraft. By the 17th of April, the war was over, and the Hungarian Air Force had lost 6 aircraft including one WM 21.
A colorized picture of the WM 21 rearview. [all-aero.com]On the 26th of June 1941, the Hungarian town of Kassa was bombed by three aircraft. The circumstance of this incident is not clear even to this day, but the Hungarian government asserted that it was a Soviet attack. The decision was made to declare war on the Soviet Union as a response. For the initial operation in the war against the Soviets, the Hungarian Air Force allocated 25 bombers (Ju 86 and Ca 135), 18 CR 42 fighters, and the 8th and 10th reconnaissance squadrons each equipped with 9 WM 21.
By 1942 most WM 21’s were allocated for use by training schools and as liaisons. Some would be used in later years for anti-partisan operations. By the end of the war, some WM 21 pilots managed to reach Austria where they hoped to surrender to the Western Allies.
Technical Characteristics
The WM 21 was a mixed-construction, biplane aircraft, designed to fulfill multiple roles. The fuselage and the wings were of metal construction which was covered in fabric. The lower and the upper wings were connected with each other by one “N” shaped metal strut on each side. In addition, there were two “V” shaped metal brackets that were connected with the fuselage and the upper wing. Lastly, there were two larger metal struts on each side that connected the landing gears to the top wing.
The WM 21 was a biplane two-seater aircraft. The lower and upper wings were held in place by various smaller metal bars, connecting them to each other and to the fuselage. [all-aero.com]The landing gear consisted of two fixed road wheels and a rear-positioned landing skid. Partly-covered front wheels were connected to the aircraft fuselage by three large metal bins.
Initially, the WM 21 was powered by an 870 hp Weiss WM K-14A radial piston engine. With this engine, the WM 21 could reach a maximum speed of 320 km/h. Later produced aircraft were equipped with a stronger 1,000 hp WM K-14B engine. With this engine, the maximum speed was increased to 380 km/h.
The pilot and the observer/machine gunner were placed in two separate open cockpits, the front for the pilot, and the rear for the observer. For better downward visibility the observer was provided with two fairly large glass panels, placed just under him on both fuselage sides.
Side view of the WM 21. Note the small glass panel located under the observer cockpit. [lasegundaguerra.com]The WM 21 was armed with two forward-firing 7.92 mm Gebauer machine guns. One additional defensive machine gun was placed in a flexible mount which was installed in the rear cockpit. Additionally, the offensive capabilities of the aircraft could be increased by adding bombs. The bomb bay was placed between the two crew members. To release the bomb the crews would use a release mechanism. The bomb load could consist either of 12 10kg anti-personnel bombs, or 60 1kg incendiary bombs. Later versions increased the bomb load to around 300 kg.
To the rear an additional 7.92 mm Gebauer machine gun was placed in a rotating mount for self-defense. [airwar.ru]
Production and Modifications
The WM 21 was produced in four small series. When the production ended in 1942 some 128 aircraft would be constructed. While designed by Manfred Weiss, this factory produced only 25 aircraft. The MAVAG produced 43 with the 60 being built by MWG. Due to the relatively low production numbers, only one modification of the original aircraft was ever made:
WM 21A – Powered with an 870 hp Weiss WM K-14A engine,
WM 21B – Slightly improved version powered by 1.000 hp WM K-14B engine
Some 128 WM 21 would be built by 1942 when the production ended. [all-aero.com]
Conclusion
The WM 21 was a Hungarian reconnaissance aircraft that would see service on several different fronts. While initially used in its intended role, it quickly became obsolete and was allocated to secondary missions, as a training aircraft or for liaison missions. Due to a lack of adequate aircraft, some WM 21would even see service as combat aircraft against Partisans forces, mostly in the Soviet Union.
WM-21A Specifications
Wingspan
12.9 m / 42 ft 4 in
Length
9.65 m / 31 ft 8 in
Height
3.5 m / 11 ft 5 in
Wing Area
32.75 m² / 352.53 ft²
Engine
One 870 hp (649 kW) Weiss WM K-14A radial piston engine
Empty Weight
2,450 kg / 5,400 lb
Maximum Takeoff Weight
7,606 kg / 3,450 lb
Maximum Speed
320 km/h / 200 mph
Cruising Speed
275 km/h / 170 mph
Range
750 km / 466 mi
Maximum Service Ceiling
8,000m / 26,245 ft
Climb speed
Climb to 6,000 m (19,700 ft) in 7 minutes and 30 seconds
Crew
One pilot
Armament
Three 7.92mm machine guns
Total bomb load of some 100-300kg
Gallery
Weiss Manfred WM 21 “Sólyom”
Credits
Written by: Marko P.
Edited by:
Illustrations by Carpaticus
Sources:
D. Monday (1984, 2006) The Hamlyn Concise Guide To Axis Aircraft Of World War II, Aerospace Publishing Ltd.
G. Sarhidai, G. Punka, and V. Kozlik (1996) Hungarian Eagles, Hikoki Publication
G. Punka (1994) Hungarian Air Force, Squadron Publication
S. Renner. (2016) Broken Wings The Hungarian Air Force, 1918-45, Indiana University Press
Nazi Germany (1938)
Tactical Reconnaissance Aircraft – 13-18 Built
The Second Bv 141 Prototype (V1) – Colorized by Michael Jucan
During the Second World War, the Germans would design and build a number of unusual aircraft (the Me 163 or the He 111 Zwilling, for example), but none was so unorthodox and strange as the Bv 141. In order to provide good visibility for its reconnaissance role, the crew gondola was completely separated from the aircraft’s fuselage. While small numbers were built, during testing it was shown to have decent flying characteristics for its completely unconventional design.
History
In 1937, the German Ministry of Aviation (Reichsluftfahrtministerium RLM) issued a request to all German aircraft manufacturers for a new single-engine reconnaissance aircraft with provision for three crew members. Great attention was to be dedicated to having a good all-around visibility. In addition, the aircraft would also have to be able to act as a light attack, and smokescreen laying aircraft. Three aircraft manufacturers responded to this request, Arado, Focke Wulf, and Blohm und Voss. Of these, Blohm & Voss would submit the most distinctive design to say at least.
While at first glance, the Ha 141 (as it was known at the start of the project, with the ‘Ha’ designation stands for Hamburger Flugzeugbau) appears to be created by someone with no experience whatsoever in aircraft design. This was not actually the case. In reality, the Ha 141 was designed by Dr. Ing. Richard Vogt, who was Chief Designer at Blohm und Voss for the new reconnaissance aircraft. The Ha 141 was to have an unusual design, as the crew was put into a well-glazed gondola, with the fuselage with and engine to the left. During his initial calculations, Dr. Vogt predicted, successfully, that the large crew gondola would act as a counterbalance to the long left-side engine fuselage.
When Dr. Ing. Richard Vogt presented his plans to the Ministry of Aviation, the officials were quite uninterested in such an unorthodox design, and the story of the Ha 141 would have ended there. Not willing to give up on his idea so easily, the Blohm und Voss company financed the construction of the first prototype with its own funding. The prototype was completed early in 1938 and the name was changed to Bv 141. It made its maiden flight on the 25th of February that year. The flight went well, without any major problems. The only issue was a slight oscillation of the landing gear. When it was presented to the Luftwaffe officials, they were surprised by its performance and ordered a production run of three more prototypes. Interestingly, after some negotiations with Blohm & Voss, their prototype was included in this order and two more aircraft were actually built. The first prototype was marked as V0 and would be later rebuilt into the Bv 141 V2 prototype and tested with the BMW 139F engine. The Luftwaffe officials only requested that the crew gondola be completely redesigned, internally and externally, to incorporate a larger working space, and to be almost completely glazed, quite similar in design to the Fw 189. Bv 141 V1, actually the second produced aircraft, was used to test the aircraft’s general flight performance. The V3 made its first test flight on 5th October 1938 and was used mainly to test the BMW 132N engine.
After the first prototype was shown to the Luftwaffe officials order few more to be built for future testing [luftwaffephotos.com]By 1939, an additional two more aircraft were built. The V4, that was to be sent to the Erprobungstelle Testing Center at Rechlin, had an accident during landing. After the repairs were made, it was finally flight tested at Rechlin. It performed well and it was liked by the pilots that had the chance to fly it. It also underwent a number of different weapon tests. Once all these tests were completed, the V4 prototype was chosen for modification into the first A-series. After that, a small series of the A version, five aircraft in total, were built and used mostly for testing and development of new improvements at Rechlin. Some were stationed at Aufklärungsschule 1 (Training School 1) at Großenhain. While the A-2 would be rebuilt into a training airframe in May 1942, the fate of the remaining aircraft of this series is unknown. Likely, all were scrapped. Depending on the sources the A-series aircraft were powered by a 1,000 hp BMW Bramo 323 radial engine.
A rear view of the Bv 141 V4 prototype. [luftwaffephotos.com]Following these tests, the Bv 141 received positive reports about its overall performance. There were also discussions about its mass production. Despite this, the whole project was officially canceled on 4th April 1940. The main reason was the Luftwaffe high officials’ distrust of the design. The official reason for rejection of the Bv 141 was noted as ‘underpowered,’ despite its good performance.
Technical Characteristics
The Bv 141 was a uniquely designed single-engine all-metal aircraft. It did not have a standard fuselage, with the engine in the front and the crew behind it. The crew gondola and the fuselage with the engine were completely separate from each other. Both were located slightly off the center of the wings. The crew gondola was placed on the right, with the engine to the left.
The glazed crew gondola is quite visible here [luftwaffephotos.com]The first A-series aircraft had a wingspan of 15 m (49 ft 3 in). The Bv 141 was initially powered by a 865 hp BMW 132N 9-cylinder radial engine. It used a constant speed propeller. Behind the engine, the 490 l fuel tank was placed.
Close up view of the initially used 865 km/h BMW 132N engine. While weaker than the later engine used, its performance was much better and offered a much more pleasant flight. [luftwaffephotos.com]The tail design was changed during the Bv 141’s development. Initially, a standard tail design was used. This would later be replaced with a forward leaning, asymmetric tailplane, offset to port side. The unusual shape of the new tailplane had the intent of providing the rear gunner with the best available firing arc. It only had one elevator, which had a larger surface area than the previous model. Surprisingly, the aircraft’s good performance was left unchanged after the introduction of the asymmetric tailplane.
The landing gear was more or less standard for its time. The front landing gear consisted of two large wheels that retracted outwards into the leading edges of the wings. To the rear, there was a small landing wheel that retracted to the back and slightly protruded out of the fuselage.
The landing gear on the Bv 141 were standard type at the time, consisting of two forward landing wheels and one smaller to the rear [luftwaffephotos.com]The first crew gondola had fewer glazed surfaces than the later used models. In general, it provided the crew with excellent front, rear, and right-side views of the surroundings. The left view was partly obscured because of the engine.
The Bv 141 pilot front gondola interior [luftwaffephotos.com]The armament consisted of four 7.92 mm machine guns. Two MG 17 forward firing fixed machine guns were placed in the forward nacelle. These were operated by the pilot, who used a Revi aim sight. To the rear, one defensive MG 15 was placed in a small circular cupola atop of the Bv 141. The last MG 15 was positioned to the rear of the aircraft. The Bv 141 could also carry four 50 kg (110 lb) bombs.
The pilot was positioned on the left side of the englazed nose of the gondola. Next to him was the position of the observer, who also acted as bombardier in case the Bv 141 was used for ground attack. The observer also had the job of operating the radio and the machine gun placed in the small circular cupola. Interestingly, because he performed different tasks, his seat was connected to two tracks which enabled him to move freely inside the gondola without getting up. The third crew member operated the rear defensive machine gun.
The Bv 141 pilot had a large glazed gondola where the crew was positioned. It offered a good all round view (except to the right side where the engine was). [luftwaffephotos.com]The front view of the first Bv 141 prototype built by Blohm und Voss. [luftwaffephotos.com]
Last Hope for Production
With the cancelation of the Bv 141A series due to allegedly poor engine performance, Dr. Ing. Richard Vogt immediately began working on an improved version. In order to address the concerns made by the Luftwaffe regarding its engine, the Blohm & Voss designers decided to use the stronger 1,560 hp BMW 801A 14-cylinder two-row engine. Unbeknownst to them, this decision would actually doom the whole project.
With the new engine, other changes to the overall design had to be made. The wings had to be reinforced and their span increased to 17.46 m (57 ft 3 in). In addition, the leading and trailing edges had to be redesigned. The rear part of the fuselage’s design was also changed. The landing gear was also improved by adding much stronger landing gear wheels. The armament appears to have been reduced to three machine guns (the sources are not clear here), while the bomb load remained the same.
The top view of one of few built Bv 141B series. While intended to improve the Bv 141A series performance, it was never achieved successfully. [luftwaffephotos]All these changes would lead to the development of the Bv 141B series. The first mock-up was completed in February 1940. The first test flight was made on the 9th January 1941. This time, the Luftwaffe officials showed interest in it, especially after installing the much stronger engine. While Blohm & Voss received permission to build five aircraft of the B-series, the order was increased by five more. Initial calculations showed that it could reach speeds up to 480 km/h (300 mph), at least in theory. Almost immediately, the Bv 141B aircraft proved to be plagued with many problems. The controls were difficult to use and the plane was prone to mechanical faults, especially regarding the landing gear and the hydraulic systems. A huge issue was also created by the strong vibrations that occurred during the test flights. In addition, during firing trials, it was noted that cordite fumes would accumulate in the cockpit from the guns.
The Luftwaffe’s initial enthusiasm for this unusual aircraft quickly faded away. While the tests on the Bv 141 would go on for a few more years, the Fw 189 would be chosen instead. Despite this setback, Dr. Vogt would continue on working on similar and improved designs during the war. Due to urgent requests for more ‘normal’ planes, he was ultimately forced to abandon his work and, besides some proposals, he never got a chance to build another such aircraft during the war. The last mention of the Bv 141 B-10 was in May of 1944, when it was used to tow another unusual design from Blohm and Voss, the experimental Bv 40 armed glider.
A group of three Bv 141 aircraft during one of many test flights [luftwaffephotos]
Operational Use
The Blohm und Voss Bv 141 [luftwaffephotos.com]The second BV 141B prototype was allocated to Aufklärungsschule 1 (Reconnaissance Training Unit) in 1941, stationed at Grossenhain. It appears that its performance was deemed satisfactory, as more aircraft were requested in order to form at least one operational test unit for use on the Eastern Front. This was never implemented, mostly due to two reasons. The Blohm und Voss factories were redirected to higher priority projects, and since the Fw 189 was accepted for service, there was no real need for another reconnaissance aircraft.
Some sources, like the book Aircraft of World War II by C. Chant, mention that it was used in test flights over the UK and the Soviet Union during its short operational service.
Use After the War
The fate of the small number of Bv 141s produced is not known. While the majority were scrapped, some managed to survive until war’s end. One Bv 141 was actually captured by the Soviet Forces near the end of the war. This aircraft would be flight tested by the British pilot Captain Eric Brown. He was the chief test pilot of the Royal Aircraft Establishment at Farnborough. He was involved in a British project tasked with taking over German war research installations and interrogating technical personnel after the war.
The single Bv 141 was relocated to an auxiliary airfield near the town of Meissen. When Captain Brown arrived, Soviet soldiers were already taking anything that was of use from the airfield and destroying everything else. After making a request to the Soviets to see if the aircraft could be flown, the Soviets approved. He was instructed to conduct a short flight around the airfield, and to beware of possible engine malfunctions due to the general poor state of the aircraft.
Captain Eric Brown described the flight with the Bv 141 as follows. “With the flaps set to start, there was surprisingly little take-off swing, although I had expected rather a lot. The run was short, but I found the undercarriage took a long time to retract, although I suspected the hydraulics were sluggish after a long period of disuse.
The climb was mediocre at a speed of 189 km/h (112 mph) and, remembering my Russian instructions, I did not go above about 915 m (3,000 ft). Cruising speed at that height was 325 km/h (202 mph). It was at this speed that I decided to try out the theory behind the asymmetric layout of the 141, namely that in the event of attack, the aircraft could be stood on its wing tip and held there in straight flight, thus giving the gunner in the cone of the nacelles a tremendous field of fire.
Frankly, I was sceptical of this claim of edge-on straight flight, but it proved to be, as near as damn it, true. I then stepped up the power, increasing the speed to 360 km/h (224 mph), but just as I rolled the aircraft on to its port side, the engine suddenly backfired heavily and oil pressure began to drop. This terminated any short handling session, as I considered discretion better than providing the Russians with their eagerly awaited spectacle.
I therefore turned straight into the landing pattern with the engine throttled well back, and lowered the undercarriage immediately at about 610 m (2,000 ft) to give it time to lower in case it got temperamental. I had both flaps and the undercarriage lowered by about 305 m (1,000 ft), across wind of the final approach, turning on to finals at 150 m (490 ft) at 145 km/h (90 mph) and easing the speed off to 130 km/h (80 mph) over the airfield boundary.
I stopped the engine at the end of the landing run, as it was obviously very sick. …. In retrospect, I am really glad to have had the unique opportunity of even a short flight in the Bv 141B, because it left me with the realisation that it was not as bad an aircraft as its development history seemed to suggest. It had good, effective controls, although it had poor lateral stability, which would have made it unpleasant to fly in turbulence at low level. Maybe this and the fact that its competitor, the Fw 189, had excellent flying characteristics, were the real reasons for its demise before reaching operational production. “
Allegedly, according to some internet sources, at least one Bv 141 was captured by the British forces. It was then shipped to England for evaluation, but its fate is unknown.
Production
How many Bv 141s were produced is not clear in the sources. The number ranges from 13 to 18 aircraft being built. This includes at least three prototypes, five of the slightly improved A series and some 10 B series aircraft. The last Bv 141B was delivered in mid-May 1943.
Ha 141 Prototype – The first prototype was built as a Blohm & Voss private venture.
BV 141A – Slightly improved version.
BV 141B – Powered by a much stronger engine and with many other modifications, especially to the wing design.
Operators
Germany – A few aircraft were used experimentally by the Luftwaffe.
Soviet Union – After the War, the Soviets managed to capture one Bv 141B, but its fate is unknown.
United Kingdom – Possibly captured one, which was allegedly shipped to England for evaluation.
Conclusion
The BV 141 initially demonstrated generally good flight characteristics, despite its unusual and radical design. The desire to further improve the flight performance, and distrust by the Luftwaffe eventually killed the project. The extensive redesign of the Bv 141B series simply had too many problems that were never completely resolved. The Luftwaffe was also reluctant to invest more time in it, especially as the more orthodox Fw 189 was being introduced into service. In the end, while it was not put into production, the BV 141 was nevertheless an interesting design and certainly deserves a spot in aviation history.
Bv 141B Specifications
Wingspans
57 ft 3 in / 17.56 m
Length
45 ft 9 in / 13.9 m
Height
11 ft 9 in / 3.6 m
Wing Area
570 ft² / 52.9 m²
Engine
One BMW 801 A-0 1.560 HP 14 cylinder radial engine
Empty Weight
10,360 lbs / 4,700 kg
Maximum Takeoff Weight
13,450 lbs / 6,100 kg
Fuel Capacity
470 l
Climb Rate to 6 km
In 8 minute 48 second
Maximum Speed at 5.000 m
272 mph / 438 km/h
Cruising speed
250 mph / 400km/h
Range
745 miles / 1,200 km
Maximum Service Ceiling
32,810 ft / 10,000 m
Crew
Pilot, observer and the rear gunner.
Armament
Two forward fixed 0.3 in (7.92 mm) machine guns and one same caliber machine gun placed to the rear.
Nazi Germany (1940)
Prototype Passenger/Transport Plane – 2 Built
Born out of Deutsche Lufthansa’ vision of an advanced airliner to replace the aging Ju 52 after the war, the BV 144 is arguably one of the rather unique looking passenger airliner planes of the 20th century. Although designed by Blohm & Voss in 1940, the first flying prototype wouldn’t take to the air until 1944, when the development of the BV 144 was no longer relevant to its original purpose and the Germans were in full retreat.
History
With rapid advances in Western Europe throughout 1940, Nazi Germany was confident that the war would be over soon. With such conditions in mind, it was very reasonable for Deutsche Lufthansa to start drafting up plans for their commercial airliner services after the war. Looking for a new aircraft to replace their aging Junkers Ju 52 transport, Deutsche Lufthansa turned to Blohm & Voss in 1940 in hopes of an advanced airliner. The design was finalized in early 1941, and was ready to be constructed. With France recently defeated, the Germans decided to take advantage of the French industry and ordered two prototypes to be constructed at the Louis-Breguet Aircraft Company factory in Anglet, in the Nouvelle-Aquitaine province of France.
BV.144 in its assembly stage. Note the large forward lamp assembly in the nose.
Although construction started in 1941, the first prototype would not be completed until sometime between July and August of 1944. By this point, the war situation for Germany had became alarmingly worse and the BV 144 was no longer seen as important. Another factor which may have been the cause of the slow construction was the deliberate low effort put into construction by the French workers, as they didn’t wish to help Germany progress. Finally, in August of 1944, the first prototype of the BV 144 would take to the sky. Unfortunately for the Germans however, the Allied forces were moving rapidly through France after Operation Overlord. This meant the Germans were forced to abandon the BV 144 prototype due to their retreat.
After the Liberation of France, the Louis-Breguet Aircraft Company factory fell back into French hands, as well as the completed BV 144 prototype and the second unfinished prototype. Both were transported to Toulouse via road and received French registration numbers. Intrigued by the relatively advanced design, the French would continue testing the BV 144 post war. The second unfinished prototype was also completed by the French post war, but it is unknown whether or not this prototype flew before the termination of the BV 144 project once and for all. Both prototypes were scrapped.
Design
BV.144 seen with French markings
The BV 144 was an all metal monoplane with a distinguishing high wing design and a tricycle landing gear configuration. It would have been powered by two BMW 801 MA 18-cylinder engines generating 1600 horsepower. The wings were located at the shoulder position of the fuselage, giving the engines a large ground clearance. Combined with the relatively short tricycle landing gear, the design would be advantageous to passengers as the fuselage would be close to the ground, allowing much easier boarding and disembarking.
The cockpit consisted of a pilot and a co-pilot in a stepped cabin, as well as a compartment for a radio operator. Following this compartment, there would have been a cargo storage, a passenger compartment, a toilet and another cargo storage. At the cost of some cargo and a less spacious passenger compartment, the passenger count could have been raised to 23 from the original 18.
Forward view of the BV.144
Foreseeing problems with takeoff and landing, Blohm & Voss designed the plane with variable incidence wings, which meant there were electric-mechanical systems fitted into the BV 144 that allowed the wing to rotate 9 degrees around its tubular main spar within the plane. Such a system was previously tested in 1940 on the Blohm & Voss Ha 140V-3 hydroplane with success. This interesting system would have allowed the pilot to change the sweep angle of the wings during low speed landing and takeoffs without having to shift altitudes. It would also allow the pilot to have a slightly better view during landing. Along with that, long slotted flaps were also provided to aid in landing.
Side view of the BV.144 with French markings
Another interesting feature of the BV 144 was the aforementioned tubular main spar, which was patented by Richard Vogt, the chief designer for Blohm & Voss. Although quite light in terms of weight, the spar would have been able to provide excellent load carrying characteristics. On top of this, as a surprising feature, the spar could also have been used to carry extra fuel. The last notable feature of the BV 144 was the defrosting system located at both wingtips and the tail section. The system would have allowed the tips and tail to stay warm using heated air provided through an oil burner.
Operators
Nazi Germany – The BV 144 was intended to be used by the Deutsche Lufthansa, and possibly even the Luftwaffe as an advanced airliner meant for short-medium distance routes.
France – The French took over both prototypes of the BV 144 once the Germans retreated out of France and continue development of the plane postwar for a while before ultimately scrapping the project in the end.
Blohm & Voss BV 144
Wingspan
88 ft 7 in / 27 m
Length
71 ft 6 ¼ in / 21.8 m
Height
16 ft 5 ¼ in / 5.01 m
Wing Area
947 ft² / 88 m²
Engine
2x BMW 801 MA (1600 hp)
Fuel Load
1900 L (Gasoline)
Minimum Weight
17416 lb / 7900 kg
Maximum Weight
28660 lb / 13000 kg
Cruising Speed
255 mph / 410 kmh at 13123 ft / 4000 m
Maximum Speed
292 mph / 470 kmh
Service Ceiling
29848 ft / 9100 m
Range
963 mi / 1550 km
Crew
1x Pilot
1x Co-Pilot
1x Radio Operator
Payload
Regular:
18x Passengers
Maximum:
23x Passengers
Gallery
The prototype BV 144 seen in a side profile illustrationA “What-if” paint scheme depicting the prototype BV 144 if it had seen service with Lufthansa during the mid forties.
Kingdom of Italy (1940-1943)
Kingdom of Hungary (1943)
United Kingdom (1940)
Nazi Germany (1940)
Nazi Germany (1940)
