Avia BH-9
| Avia BH-9 | |
|---|---|
|
|
| Type: | School and sport aircraft |
| Design country: | |
| Manufacturer: | |
| First flight: |
1923 |
| Number of pieces: |
11 |
The Avia BH-9 was a Czechoslovak sports and training aircraft from the 1920s.
development
It was developed as a two-seater further development of the BH-5 and, like this, was a low- wing aircraft , whose structure was connected to the fuselage by two struts on both sides. The chassis was rigid and had a continuous axle. For the first time in the BH series, which had previously been equipped with imported drives, a local Walter engine was used as the drive.
The first flight took place in 1923. The Czechoslovak Army ordered ten copies and used them under the designation B.9 in the Cheb military pilot school for training beginners and as a liaison aircraft. One of these aircraft won the Coppa d'Italia in 1925. A year later, Lieutenant Jira flew the 1,800 km Prague – Paris – Prague route in a BH-9 at an average speed of 131.2 km / h. The successor was the BH-11 , which differed from the BH-9 only by the rectangular instead of the elliptical frames in the front fuselage and had a greater range.
The last two BH-9s flew at aviation clubs in 1939.
Military users
- Czechoslovak Air Force : 10 copies
Technical specifications
| Parameter | Data |
|---|---|
| Constructor (s) | Pavel Beneš / Miroslav Hajn |
| Year of construction (s) | 1923 |
| crew | 2 |
| Wingspan | 9.72 m |
| length | 6.64 m |
| height | 2.53 m |
| Wing area | 13.60 m² |
| Wing loading | 40.5 kg / m² |
| Empty mass | 345 kg |
| Takeoff mass | 552 kg |
| drive | an air-cooled five-cylinder - radial engine Walter NZ-60 |
| power | 44 kW (60 hp) |
| Top speed | 158 km / h |
| Cruising speed | 120-125 km / h |
| Minimum speed | 75 km / h |
| Landing speed | 60 km / h |
| Rise time | 12.5 minutes at an altitude of 3,000 m |
| Range | 470 km |
| Summit height | 4000 m |
literature
- Peter All-Fernandez (ed.): Aircraft from A to Z . Aamsa Quail-Consolidated P2Y. tape I . Bernard & Graefe, Koblenz 1987, ISBN 3-7637-5904-2 , p. 135/136 .
- Hans – Joachim Mau: Czechoslovak aircraft from 1918 until today . Transpress, Berlin 1987, ISBN 3-344-00121-3 , p. 74/75 .
- Michael J. H. Taylor: Jane's Encyclopedia of Aviation . Studio Editions, London 1989, pp. 86 (English).
- World Aircraft Information Files . File 889 Sheet 86. Bright Star, London (English).
- Josef Krybus: Avia BH-9 . In: Letectví a kosmonautika'73 Výběr . Magnet, Prague 1973, p. 148 ff . (Czech).
- Václav Němeček: Československá letadla . Naše Vojsko, Prague 1968 (Czech).
