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Military training aircraft From Wikipedia, the free encyclopedia
The Arado Ar 96 is a single-engine, low-wing monoplane of all-metal construction, designed and produced by the German aircraft manufacturer Arado Flugzeugwerke. It was the Luftwaffe's standard advanced trainer throughout the Second World War.
| Ar 96 | |
|---|---|
| Arado Ar 96Bs in echelon flight | |
| General information | |
| Type | Military trainer |
| National origin | Germany |
| Manufacturer | Arado Flugzeugwerke |
| Primary users | Luftwaffe |
| Number built | 2,891 |
| History | |
| Introduction date | 1939 |
| First flight | 1937 |
The Ar 96 was designed during the mid 1930s in response to a requirement issued by the Reichsluftfahrtministerium (RLM/German Aviation Ministry) for a modern trainer. Arado produced a new design suitable for conducting various forms of training, including advanced flying, aerobatics, aerial reconnaissance, night flying, and radio operator training. Various trainee-friendly features were present, including aerodynamically balanced flight control surfaces, widely-set landing gear, and automatically deploying flaps. In late 1936, the first prototype was completed; five more prototypes followed with various improvements, such as the use of a more powerful engine, variable-pitch propeller, and automated slats. The first batch of Ar 96A aircraft were delivered during late 1939.
By the end of 1940, the Ar 96 was becoming a common sight at many Germany pilot training schools, where they were often regarded as being relatively rugged, easy to fly and maintain, and technologically up-to-date aircraft. During the Battle of Berlin, on the evening of 28 April 1945, test pilot Hanna Reitsch flew with the Luftwaffe head Generalfeldmarschall Robert Ritter von Greim out from Berlin in an Ar 96. Arado continued to develop the type throughout the war, proposing various models as well as enacting various manufacturing changes to minimise production time as well as the use of strategic materials. Shadow production of the Ar 96 was undertaken by Letov and the Avia factory in occupied Czechoslovakia; they continued to manufacture the type for several years after the end of the conflict under the designation of Avia C-2B. A wooden version, known as the Ar 396, was built in France and was designated the SIPA S.10.
The origins of the Ar 96 can be traced back to the mid 1930s and the shortcomings of the Focke-Wulf Fw 55W, a biplane floatplane intended for the trainer role.[1] During early 1936, the Reich Air Ministry issued a tender to produce a modern trainer aircraft; Arado opted to produce its own response. A design team at the company, headed by the aeronautical engineer Walter Blume, promptly designed a monoplane aircraft that featured all-metal construction and a low-mounted cantilevered wing.[1] It was designed with Arado's standard forward-set tailfin, which reduced the occurrence of spins. The aircraft was envisaged to perform standard training, night flying, aerobatics, radio operator training, aerial reconnaissance (using photogrammatical cameras) and even bombing missions.[1]
To suit its principal use as a trainer, the design of the aircraft incorporated various safety features.[2] All of the flight control surfaces were aerodynamically balanced and could be readily adjusted mid-flight. The flaps would automatically deploy (based on airspeed) if the trainee pilot forgot to do so.[2] While the main landing gear and brakes were hydraulically powered, manual actuation via a hand pump was available in the event of a hydraulic failure.[2]
In the autumn of 1936, the first prototype was completed.[1] Modifications proved to be necessary; a continuous spar design replaced the tubular steel bridge arrangement initially used to link the wings, fuselage, and landing gear, while the horn counterbalance on the rudder was also eliminated. The outward-retracting landing gear was replaced by wider-tracked design to fulfil training safety requirements, while automatic slats were also added along with increased canopy glazing.[1] The first prototype was initially powered by a single Argus As 10c engine, capable of producing up to 179 kW (240 hp).[1]
During 1937, testing of the first batch of prototypes proceeded positively; that same year, Ernst Udet, Chief of the Technical Office, T-Amt, (the development wing of the Reich Ministry of Aviation), flew one of the early Ar 96s.[1] The second prototype incorporated numerous changes based on experiences of the first; the third prototype was equipped with the newly-developed Argus As 410 engine, which was initially capable of 360 hp (270 kW). This engine, along with the adoption of a variable-pitch propeller, was observed to have considerably increased the aircraft's performance.[1] In mid-1938, the third and fourth prototypes were handed over to the E-Stelle Rechlin, the German test centre, for further testing.[1]
During 1939, an initial batch of Ar 96A aircraft was produced; these largely resembled the sixth prototype, albeit being powered by the weaker Argus As 10 engine instead, largely due to insufficient numbers of As 410 engines being available at that time.[1] This batch was subsequently followed by the Ar 96B, the first major production series, which were equipped the more powerful Argus As 410 engine.[2]
Once quantity production of the type had been established, Arado's test group studied various means to more economically produce the aircraft; it was hoped that production time could be roughly halved from 110 hours to 60–65.[2] One approach, aimed at reducing individual part count and shortening production time, involved the use of a hydraulic extrusion press and an electric roll welding process on the tailplane subassembly manufacture. This necessitated the use of large quantities of relatively expensive duralumin sheeting, as well as being a deviation from the semi-monocoque approach.[2] One cost reduction was achieved via the use of smaller than standard panel sheeting. Increased automation and the use of snap riveting was also studied by the company.[3]
By 1943, Germany's declining military situation and intense demands for key materials motivated Arado started development of a new derivative of the Ar 96 that made greater use of lower grade non-strategic metals and wood.[4] The initial version, the Ar 296, proved to be unsatisfactory and thus did not reach quantity production. Instead, cooperation with other aircraft manufacturers on producing the aircraft was pursued.[4]
During 1943, the French aircraft manufacturer Société Industrielle pour l'Aéronautique (SIPA) was ordered to build three Ar 396 prototypes and 25 pre-series aircraft. They made extensive use of wood and simplified construction wherever possible, even at the expense of aerodynamic refinements.[4] However, development were deliberately constrained by the French,[5] while the launch of the Allied invasion of France during the following year forced the Germans to shift production of the Ar 396 to Czechoslovakia instead.[6][7] Accordingly, this work was undertaken by both Letov and the Avia factory in occupied Czechoslovakia, while considerations for another final assembly site in neighbouring Hungary was also considered.[4] The first Czech-built example flew on 24 November 1944, with about 12 more examples completed by a consortium of several Czech manufacturers, headed by Avia.[8][5] SIPA, meanwhile, continued work on its prototype after the German withdrawal from France, with the first French-built Ar 396, redesignated SIPA S.10, flying on 29 December 1944.[6][5]
In late 1939, the first deliveries of Ar 96s to German flight training schools took place.[1] The first Ar 96B-1s were delivered, the first properly-equipped trainers, followed months later. Unlike the following Ar 96B-2 model, all Ar 96B-1 aircraft were unarmed.[2] The Ar 96 quickly became commonplace at fighter pilot schools, where they were typically used for advanced, night and instrument-flying training. They were frequently described as being relatively rugged, easy to fly and maintain, and technologically up to date.[2]
During the Battle of Berlin, on the evening of 28 April 1945, test pilot Hanna Reitsch flew with then-Luftwaffe head Generalfeldmarschall Robert Ritter von Greim out from Berlin in an Ar 96 trainer from an improvised airstrip in the Tiergarten while under Soviet fire. Despite the end of the conflict in May 1945, manufacturing of the AR 96 continued for some years afterwards in the newly-freed Czechoslovakia, where the type was locally designated as the Avia C-2B.[5] French production of a model of the aircraft, under the local designation of SIPA S.10, also proceeded.[5] Further developments included the SIPA S.11 (armed version), and the SIPA S.12, a metal version; 188 of all versions were produced until 1958. The S.11 was operated with some success in Algeria, where it was commonly armed with machine guns, rockets, and light bombs.[citation needed]
 |
| Version | Arado | AGO | Avia | Letov | Total | Construction period |
|---|---|---|---|---|---|---|
| Prototypes | 4 | 4 | 1937–1938 | |||
| A-0 | 6 | 6 | including 3 delivered on 1 April 1939, W.-Nr. 2879-2884 | |||
| A | 23 | 69 | 92 | Mid 1939 – May 1940 | ||
| B-0 | 2 | 2 | 1940 | |||
| B-1 | 144 | 223 | 997 | 17 | 1,381 | July 1940 – April 1944 |
| B-3 | 210 | 210 | 1941–1943 | |||
| B-6 | 100 | 100 | July 1943 – January 1944 | |||
| B-7 | 518 | 378 | 896 | May 1944 – March 1945 | ||
| B-7/B-8 | 81 | 81 | December 1944 – March 1945 | |||
| B-8 | 74 | 74 | June 1944 – January 1945 | |||
| Sales series | 45 | 45 | 1939–1940 | |||
| Total | 224 | 292 | 1825 | 550 | 2891 |
Data from Aircraft of the Third Reich Vol.1 [15]
General characteristics
Performance
Armament
1 × 7.92 mm (0.312 in) MG 17 machine gun
Aircraft of comparable role, configuration, and era
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