Avia BH-7
| Avia BH-7 | |
|---|---|
|
|
| Type: | Fighter plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1923 |
| Number of pieces: |
2 prototypes |
The Avia BH-7 was a Czechoslovak aircraft from the first half of the 1920s. Two prototypes were created.
development
At the beginning of the 1920s, the Ministry of War of the Czechoslovak Republic tried to have the domestic industry develop aircraft types in order to be independent of deliveries from abroad. In 1923 there was an invitation to tender in which a single-seat fighter aircraft was required. Pavel Beneš and Miroslav Hajn, the two developers at Avia , then designed two types of aircraft. The biplane BH-6 with its lower wing, which was longer than the upper wing, was a typical Beneš / Hajn construction of the 1920s and the beginning of the line that went over the BH-8 and BH-17 in the successful BH-21 flowed.
The second model, the BH-7 , mainly differed from the BH-6 in its high -wing design. The wing was connected to the fuselage by N-stems. As is typical for Avia, the engine cooler was located between the legs of the rigid main landing gear that was connected to one another by an axle.
The first prototype BH-7A was intended for the army and received a Hispano-Suiza-8Fb license engine from Škoda with a two-bladed wooden propeller . The second prototype BH-7B was intended as a racing aircraft for competitions and had a compressor . It also differed from the military version in that the wingspan was shortened by 1.40 m.
The aircraft did not go into series production and the knowledge gained during testing was incorporated into the successor models.
Technical specifications
| Parameter | Data |
|---|---|
| Year of construction (s) | 1923 |
| Manufacturer | Avia Akciová Společnost Pro Průmysl Letecký |
| Designer (s): | Pavel Beneš / Miroslav Hajn |
| crew | 1 |
| span | 10.40 m (BH-7B: 9.00 m) |
| length | 6.84 m (BH-7B: 6.83 m) |
| height | 2.83 m |
| Wing area | 18.15 m² |
| Empty mass | 855 kg |
| Takeoff mass | maximum 1150 kg |
| Top speed | 240 km / h |
| Service ceiling | 8000 m |
| Range | 480 km |
| Engine (s) | a liquid-cooled eight-cylinder - V engine Hispano-Suiza 8Fb (license Škoda) |
| power | 231 kW (approx. 310 hp) |
| Armament | two 7.7 mm rigid Vickers machine guns above the engine (planned) |
literature
- Michael JH Taylor: Jane's Encyclopedia of Aviation. Studio Editions, London 1989, p. 86.
- World Aircraft Information Files. File 889 Sheet 86, Bright Star Publishing, London.
- V. Němeček: Československá letadla. Naše Vojsko, Prague 1968.
