Kingdom of Italy (1936)
Ground Attack Aircraft – 148 ~ 155 Built
The Ba.88 was an Italian twin-engine aircraft design built in 1936. Despite managing to break a few world speed records, it was an unsuccessful design. When it was adopted for military service, its performance deteriorated and only a small number of aircraft were ever built.
History
On 20th January 1936, the Italian Air Force (Regia Aeronautica) made a request for the development of a new twin-engine multipurpose aircraft. This new aircraft design was meant to be capable of achieving a top speed of least 470 km/h (290 mph). Heavy armament was also required, which would have to consist of two to four 12.7 mm (0.5 in) machine guns or two 20 mm (0.78 in) cannons. It was requested to have an operational range of 2,000 km (1,200 mi) and to be able to reach a height of 6 km (20,000 ft) in around 9 minutes. The cockpit also had to have a good all-around field-of-view.
Italian Air Force officials invited all Italian aviation companies to submit their proposals for the new multi-role design. Many companies responded to this request with their own suggestions. These included the I.M.A.M Ro.53, Fiat CR.25, Bonomi BS.25, Chiodi CH-2 and the Breda Ba.88. As the Breda Ba.88 showed the most promise, at least on paper, it was chosen as the winner of the competition.
Beginnings
Work on the first prototype began soon after. The development of the Ba.88 was given to a team led by Antonio Parano and Giuseppe Panzeri. The Ba.88 was influenced by an earlier Breda design, the single engined Ba.75, with which it shared some similarities, such as the tail and fuselage design.
The first Ba.88 prototype, named M.M. 302, was completed relatively fast and was ready in Autumn 1939. A series of flight tests began in October 1936, piloted by a young test pilot named Furio Nictol Doglio. During these initial tests, the Ba.88 was shown to have potential weight issues, but development continued.
In early February 1937, the prototype was moved to the Guidonia Experimental Centre for further testing. Once there, it was tested by several Breda test pilots. In April of 1937, Furio Nictol managed to achieve an average speed of 518 km/h (322 mph) during a 100 km (61 mi) long flight from Fiumicino, Toraianica to Ancio. This was actually a world speed record at the time. On the 10th of April, Furio Nictol managed to reach an average speed of 476 km/h (295 mph) over a much longer distance of 1,000 km (620 mi). Of course, the Fascist regime was quick to take advantage of these results and used them for propaganda purposes around the world.
To further improve the Ba.88’s performance, the engines were replaced with stronger 1,000 hp Piaggio P.XI. In addition, the single vertical tail was replaced with twin fins and rudders. In November 1937, the modified Ba.88 made many more test flights in order to determine its performance. In early December, two new speed records were made, the first with 555 km/h (345 mph) and then 523 km/h (326 mph).
Initial Problems
During this time, the Italian Air Force began showing interest in a heavy fighter design (like the German Me-110, for example) and asked Breda to adapt the Ba.88 to this role. During 1938, testing on the Ba.88 continued. During this time, many issues with its design began to arise. In October, when adopted for military testing, the plane was shown to have many issues. The pilots noted that the Ba.88 was difficult to fly, maneuvering was slow and heavy. A report made by General Pinna, dated 21st November, states that the Ba.88’s maximum realistic speed was around 464 km/h (290 mph) at heights of 5.2 km (17,000 ft). He also noted that there is only a small probability that the speed could be improved and that the achieved speed was inadequate for a military aircraft of this type.
While Breda’s test pilots tried to defend the Ba.88, the army pilots were not so impressed. Colonel Lippi echoed General Pinna’s concerns, noting in his report that the Ba.88’s overall performance was poor and it was difficult to control. He also noted that the canopy could not be opened during flight, which was a significant problem if the pilot needed to initiate an emergency bail out. The situation worsened with the installation of military equipment, like the weapons, ammunition, cockpit equipment, extra fuel etc. The weight problem was so severe that the installation of bombs was only possible after removing internal equipment. The lower heavy machine gun was rarely installed in order to save weight. For these reasons, the Italian Air Force put Ba.88 production on hold.
Technical Characteristics
The Ba.88 was an all-metal, high wing, two engine ground attack aircraft. The fuselage was built by using welded chrome-molybdenum steel tubes. Its overall fuselage design could be divided into three sections: the front nose section, the lower section where the bomb bay was placed and the longer section that covered the remainder of the aircraft. The whole fuselage construction was covered with duralumin sheets held in place by longitudinal stringers, rivets and bolts.
The wings were made using chrome-molybdenum tube spars held in place by tube beams. This wing construction was then covered with sheet metal plates. The wings were connected with the Ba.88’s fuselage by using conical wrist pins and bolts. The original prototype had a standard single vertical tail assembly, but this was later changed to a new modified tail unit with twin fins and rudders.
The Ba.88 had two landing wheels that retracted backward into the engine nacelles. The rear tail wheel was also retractable, and could be steered if needed. The landing gear wheels were equipped with shock absorbers in order to ease landing.
The prototype was powered by two 900 hp Fraschini K14 engines. The production version was powered by two 1,000 hp Piaggio P.XI RC.40 14-cylinder radial piston engines. Two 10.5 ft (3.2 m) duralumin three blade propellers, which could rotate in opposite directions, were used. The engine mounting was made using welded steel tubes. There were plans to test different engines in order to reduce the overall weight and improve performance. This included the less powerful but lighter and more aerodynamic Fiat A 74, and stronger 1,000 hp A 76 and Isotta Fraschini L.121. Foreign engine designs were also proposed, like the German Daimler Benz DB.601 or even the French Hispano Suiza 12Y. There were twelve armored fuel tanks with a total capacity of 1,379 liters (365 gallons). These were arranged with two in the engine nacelles, four in the fuselage, and six in the wings.
The Ba.88 had more or less a standard cockpit layout, with a rear sliding canopy. The pilot was provided with all instruments needed to efficiently fly the Ba.88. The radio used was the R.A.350/II, supported by an A.R.8 receiver. Additional equipment, like a photo camera, could be added in the fuselage nose. To the rear of the pilot was the machine gunner’s position. He was seated with his back to the pilot.
The main armament consisted of three 12.7 mm heavy Breda-SAFAT machine guns with 1,250 rounds of ammunition each. The rear gunner operated one 7.7 mm Breda-SAFAT machine gun with 250 rounds of ammunition and an additional 250 rounds in reserve. The bomb bay was semi-exposed and could accomodate a few different bomb load configurations: Three 50 kg (110 lbs) bombs, three 100 kg (220 lbs) bombs or two 250 kg (550 lb) bombs. There was also the option to install 40 small 2 kg (4.4 lb) bombs. Theoretically, the Ba.88 could be equipped with a total bomb load of 1,000 kg (2,200 lb), but this was never done due to the airframe’s weight problems.
A New Chance
With no other options, the Regia Aeronautica ordered the Ba.88 to be put into small production on the 20th of April, 1939. Production was to start in May of 1939, and by October 1939 some 80 had been produced. During 1938 and 1939, the Ba.88 was advertised abroad and several countries showed interest namely Sweden, Yugoslavia, Switzerland and Lithuania, but no orders were placed.
In Autumn of 1938 and early 1939, three newly produced Ba.88 were moved to Guidonia for more testing. The first Air Force units to be equipped with Ba.88s were the 7° Gruppo and the 19° Gruppo. In early May 1939, the first five Ba.88s were reallocated to the 76° Squadriglia of the 7° Gruppo. By September 1939, the 7° Gruppo (76°, 86°, 98° Squadriglia) and the 19° Gruppo (100°, 101°, 102° Squadriglia ) were equipped with 27 Ba.88 aircraft each, with 9 aircraft in each Squadriglia.
With the installation of additional military equipment and armament, the performance and flight characteristics deteriorated dramatically. The top speed achieved with full military equipment and armament was much lower than that during the test flights. Italian army test pilots expressed concern about its flight characteristics, since even simple maneuvers were hard to achieve. In the hope of fixing some of these issues, a number of weight saving modifications were done during the war, but these problems would never be completely solved.
The Ba.88 During the War
During the war, the Ba.88 would be used only during the limited Italian attack on France and in North Africa. A small number were modified as experimental ground attack planes stationed in Italy but none were used operationally. Despite being originally designed as a multi-purpose aircraft, it would only be used in the ground attack role.
On the Western Front
After the German attack in the West in May 1940 and the rapid defeat of Allied forces in Holland and Belgium, the Italians tried to take advantage of the situation and declared war on the Allies. On 16th June, some 12 planes from the 7° Gruppo (or 19° Gruppo, depending on the source) made several bombing raids on airfields in Corsica. The next day, the attack was repeated with 9 Ba.88s. By 19th June, the battle was over. Italian combat analysis of these air attacks had led to the conclusion that the Ba.88 had only limited value as an effective operational aircraft.
In North Africa
The next use of the Ba.88 in combat was in North Africa, starting in August 1940. The Ba.88s of the 7° Gruppo were moved to Libya in August, and were part of the 5° Squadra Aerea. Due to the need to adapt them for desert conditions (with sand filters, for example), they were not combat ready until September. On 14th September, the 7° Gruppo was tasked with attacking Sidi El Barrani, a British airfield about 250 km (155 mi) behind the front. For the first attack, a group of three fully equipped Ba.88s, with full fuel load and ammunition, and carrying 250 kg (550 lb) of bombs were used. The attack failed as the Ba.88s were not able to take to the sky successfully. One Ba.88 had to return to the airfield as the aircraft could not maintain flight and another did not even manage to take off from the airfield. The last one, piloted by the unit commander, managed to take off but was constantly losing altitude and he was also forced to abandon the mission.
Many planned flights were also halted due to the Ba.88’s poor performance. Due to the heavy weight, low engine performance and increased drag (due to the addition of externally mounted bombs), the Ba.88’s performance fell dramatically. In a desperate attempt to improve its performance, all unnecessary internal equipment and the rear gunner positions were removed. In addition, many modifications to the design were also added but, in the end, none of these efforts made any appreciable difference.
By October only 10 Ba.88s were fully operational, down from a total of 29. On the 14th October 1940, three Ba.88s from the 98° Squadriglia were ordered to attack British armored forces around Sidi El Barrani and Bir Emba, but they failed to locate their targets. The next day, while on a reconnaissance mission, one was damaged by Italian anti-aircraft fire, as it was mistaken for a British plane.
Due to its disappointing performance, the Ba.88s were ordered to be removed from service. By the 16th of November, the 7° Gruppo had only 2 or 3 fully operational Ba.88 aircraft left. Because of the problems, most if not all surviving Ba.88 had been stripped of all useful equipment and armament, and were scattered around major airfields mostly to act as decoys for British attack aircraft.
Further Modifications: Ba.88 A74 and Ba.88 A74Bic
Despite being rejected from further military use, a second series of 60-70 Ba.88s was completed by Breda and I.M.A.M. None were used to equip any military units, and most were scrapped or used as target practice.
In a desperate hope of reusing the surviving operational Ba.88s, the Italian Air Force ordered them to be modified as dive bombers. The first tests were carried out at the Guidonia Experimental Centre air tunnel. There, different types of under wing brakes were tested, including the ones used on the German Junkers Ju-87. In order to save weight, the Piaggio engines were replaced with less powerful but much lighter Fiat A.74s. Great attention was given to reducing the weight as much as possible. This started with the engine, followed by reducing the fuel capacity by 117 liters (31 gallons), removing the rear machine gun turret position, the wing mounted bomb racks and the lower front machine gun.
Four Ba.88s (M.M. 3985, 3971, 3963 and 4034), together with one dual-control version, were modified with the A.74 engine. These received the Ba.88 A.74 and Ba.88 A.74 Bic (for the dual-control version) designations from Breda. These improved Ba.88 A.74 planes were equipped with modified wing mounted bomb racks in order to increase their offensive capabilities. It was possible to equip one larger 500 kg (1,100 lb), two 250 kg (550 lb) or three smaller 100 kg (220 lbs) bombs. In March 1942, these were given to the 1° Nucleo Addestramento Tuffatori stationed at Lonate Pozzolo. For further intensive testing, two Ba.88 A74 were allocated to the 101° Gruppo Tuffatori also based at Lonate Pozzolo. The tests proved to be disappointing and this unit was instead equipped with the older CR.42.
The Ba.88M
A last ditch attempt was made in the summer of 1942. One Ba.88 A.74 was modified with an 80 cm (31.5 in) longer fuselage and a wider wingspan of 2.3 m (7.55 ft). Parts of the metal wing construction were replaced with wooden panels. These modifications were done by Magni and Augusta. They received orders to modify an additional 6 Ba.88s. These received the Ba.88M designation, where M stands for ‘Modificato’, modified.
The Italian Air Force gave orders to these manufacturers to modify as many Ba.88 as possible. According to the original plan, a group of 40 improved Ba.88s was to be formed. Half of these would have been the single seat version and the other half two seat versions. In March 1943, additional modifications were required (by order of Air Force General Eraldo Ilari) in order to adapt the Ba.88 for dive bomber operations. These included the installation of only one 12.7 mm machine gun with an additional three that could be added if needed (two in the wing roots and one the fuselage), the possibility of adding armored plates for the pilot’s protection, removing parts of the wing’s leading edge in order to provide the pilot with a better view etc. Despite these improvements, the weight was actually increased by some 200 kg (440 lb).
By the end of July 1943, around 12 Ba.88s were gathered for modification. A few completed Ba.88Ms were allocated to 103° Gruppo Autonomo Tuffatori (independent dive-bombing group). This unit was also equipped with the German Ju-87. In August 1943, it was moved to Lonate Pozzolo and all its Ju-87s were given to 102° Gruppo. None of the Ba.88M were used in combat and, as the Germans occupied Italy, all surviving Ba.88s were scrapped for materials. Only one Ba.88M (MM 4605) was operated by the Aeronautica Nazionale Repubblicana in Northern Italy under German markings.
Production and Modifications
Production of this aircraft began in May 1939 the Breda Bresso 81 workshop. In the first production series (around 80 aircraft), eight Ba.88 were built as dual-control trainers, with the added rear cockpit for the instructor, in place of the rear machine gunner. In addition, one modified single seater was built to be tested with an anti-tank cannon. An additional 24 aircraft were built by I.M.A.M. Later, in 1940, some 67 (or 42) new aircraft were built, 19 by Breda and 48 (or 23) by I.M.A.M. In the end, the total production was (depending on the source) 148 to 155 aircraft plus the prototype.
Variants:
- Ba.88 Prototype – One built.
- Ba.88 – Production version.
- Ba.88 Single seat prototype – One built to be tested with an anti-tank cannon.
- Ba.88 Dual-control trainer – Eight were built.
- Ba.88 A.74 – Experimental dive bomber version. A few were modified, but were not adopted for production. This model served as a base for the Ba.88M.
- Ba.88 A.74 Bic – Two-seat version of the previous model, one built.
- Ba.88M – Three modified aircraft in order to improve the Ba.88’s flight performance.
Operators
- Regia Aeronautica – Operated small numbers of the Ba.88, but were quickly withdrawn from front service.
- Aeronautica Nazionale Repubblicana – Operated one Ba.88M given to them by the Germans.
- Germany – After the surrender of Italy, seized all surviving Ba.88s, but none were ever used operationally.
- Sweden, Yugoslavia, Switzerland and Lithuania – These countries showed interest in the Ba.88, but buying orders never came from any of them.
Conclusion
Despite a promising start with excellent speed records, the Ba.88 would never fulfill the role which the Italian Air Force had hoped for. The greatest problem was the Ba.88 was a combination of excess weight coupled with underpowered engines, as it showed in Africa where even limited combat flights were nearly impossible with the aircraft barely able to take off with a full load of fuel and bombs. Later attempts to adapt it for dive bombing operations were also unsuccessful. In the end, the Ba.88 proved to be an ill-fated design and a complete failure.
Ba.88 Specifications |
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| Wingspans | 50 ft 5 in / 15.4 m | |
| Length | 35 ft 3 in / 10.75 m | |
| Height | 9 ft 10 in / 3 m | |
| Wing Area | 358.88 ft² / 33.34 m² | |
| Engine | Two 1000 hp Piaggio P.XI RC.40 14-cylinder radial piston engine | |
| Empty Weight | 10,250 lbs / 4.650 kg | |
| Maximum Takeoff Weight | 6,750 lbs / 6.750 kg | |
| Fuel Capacity | 1,397 l / 370 Gallons | |
| Climb Rate to 3 km | In 7 minutes 30 seconds | |
| Maximum Speed | 304 mph / 490 km/h | |
| Cruising speed | 273 mph / 440 km/h | |
| Range | 1,020 miles / 1640 km | |
| Maximum Service Ceiling | 26,245 ft ft / 8,000 m | |
| Crew | One pilot and the rear gunner | |
| Armament |
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Credits
- Article written by Marko P.
- Edited by Stan L. and Ed J.
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- Jonathan T. (1963) Italian Civil And Military Aircraft 1930-1945, Aero Publisher
- Chris C. (2007) Pocket Guide aircraft of WWII – 300 Of The World’s Greatest Aircrafts. Grange Books.
- Siniša M. (2009) Braničevski Glasnik 6, Požarevac
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- Side Profile Views by Ed Jackson – Artbyedo.com