Avia BH-33
| Avia BH-33 | |
|---|---|
|
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| Type: | Fighter plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
October 21, 1927 |
| Number of pieces: |
approx. 110 + 77 licensed buildings |
The Avia BH-33 is a Czechoslovakian biplane - fighter aircraft in 1927. The aircraft was designed by Pavel Beneš and Miroslav Hajn.
development
The prototype of the Avia BH-33 was completed in 1927. It was the last design by Beneš and Hajn for the Avia company. The aircraft was a further development of Avia BH-21J , with a Bristol Jupiter - radial engine was fitted. The BH-33 was the first design by Beneš and Hajn to have a rudder and fin from the start. Until then, the flat sides of the expiring fuselage were considered a sufficient substitute for the tail fin . The lower wing of the biplane had a larger wingspan. The aircraft had a conventional landing gear with a tail skid.
The Czechoslovak Air Force took over some aircraft from the series version modified at the rear. The Polish company PWS acquired a license in 1928 and built 50 aircraft with the designation PWS-A. Belgium bought three copies of the BH-33.
variants
- BH-33E
In 1929 a new design took place. Avia exhibited the modified aircraft at the Paris Salon Aéronautique . The hull had a tubular steel construction with an elliptical cross-section. The chassis now had split axles and was V-shaped.
The Czechoslovak Air Force ordered a number of machines with the designation B.33. Three machines each were delivered to the USSR, Belgium and Yugoslavia. The Ikarbus company built another 22 aircraft (BH-33E-SHS with IAM-K9 engine) under license for Yugoslavia.
In addition to the Bristol radial engine Jupiter VI, Avia also tested the Jupiter VII with a compressor.
- BH-33L
The aircraft was an improved BH-33E with a larger wingspan and a W-engine Škoda-L (a Hispano-Suiza 12Gb manufactured under license ) with an output of 373 kW (approx. 510 hp). Avia built a total of 80 machines under the designation Ba.33 which belonged to the standard equipment of various regiments of the Czechoslovak Air Force until the end of the 1930s.
- BH-133
This was an experimental aircraft, only one of which was built in 1930. The basis was the BH-33E. The aircraft was equipped with a Pratt & Whitney Hornet radial engine with an output of 391 kW (approx. 530 hp). The engine used was a license production from BMW .
Military users
- Belgian Air Force : 3 × BH-33-1
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- Greek Air Force : 5 BH-33E-SHS from Yugoslav production
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- Polish Air Force : 1 BH-33 and 50 PWS-A license builds
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- Soviet Air Force : Bought 2 or 3 for testing
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Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 7.04 m |
| span | 8.90 m |
| height | 2.79 m |
| Wing area | 22.20 m² |
| Empty mass | 830 kg |
| Top speed | 285 km / h |
| Range | 450 km |
| Engine | a radial engine Bristol Jupiter VI , license Walter |
| power | 405 kW (approx. 550 PS) |
| Armament | two fixed, synchronized 7.7 mm machine guns |
See also
literature
- Vaclav Němeček: Československá letadla. Naše Vojsko, Prague 1968.
- John WR Taylor, Jean Alexander: Combat Aircraft of the World. GP Putnam's Sons, New York 1969, ISBN 0-7181-0564-8 .
- Michael JH Taylor: Jane's Encyclopedia of Aviation. Studio Editions, London 1989, ISBN 0-517-69186-8 .
- World Aircraft Information Files. File 889 Sheet 86, Bright Star Publishing, London.
