German experimental aircraft B9 Berlin

With the rise in the Air Force in Germany dive bombers, to raise the issue of human exposure of large loads. Conduct research in the field tasked DVL (Deutsche Versuchsanstalt fur Luftfahrt). In time first experiments revealed that the pilot, while in a sitting position, is able to properly carry overload 6G, provided that time impact loads do not exceed 4 seconds. For longer overloads all could end fatal ending. At the same time, development of aviation forced to find ways to overcome the congestion around 10G. The output was the relocation of the pilot to "lying."

German experimental aircraft B9 Berlin

DVL in 1937 to test the theoretical data began to work on creating an experimental aircraft, which was to try out this new product. The creation of a specific machine instructed the organization FFG (Flugtechnische Fachgruppe der Technischen Hochschule), where the machine was given the designation B9, also own the title "Berlin. "In the register of RLM aircraft was introduced under the code of 8341 (any digit of the code indicates the type of aircraft, type of used motor, etc.).

German experimental aircraft B9 Berlin

Aircraft construction is quite sluggish. B9 layout for the tests has been prepared for the beginning of 1943 B9 Berlin was transferred to the base at Rechlin for test flights. The external appearance of the car was quite rude, but because of it and was not required purity of forms. Angular B9 fuselage was a welded iron pipes and lined with fabric. The structure of the wing was of wood, used as a cladding duralumin. With all the homeliness design B9 Berlin can withstand overloads up to 12G. Flying at it lasted right up to the end of 1944, and the results of tests used in time design and construction of Blohm und Voss BV.40 (glider fighter) and Henschel Hs.132 (jet dive bomber).

German experimental aircraft B9 Berlin

Aircraft performance characteristics:
Modification — B-9;
Length — 9.06 m;
Height — 2.32 m;
Wingspan — 9.40 m;
Wing Area — 11.9 m2;
Empty weight — 940 kg;
Normal take-off weight — 1115 kg;
Type of motor — motor 2porshnevyh Hirth HM 500;
Power — 2×105 HP;
The highest speed — 250 km / h;
Operational range — 400 km;
Service ceiling — four thousand meters;
Crew — 1 person.

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