Avia BH-33
The Avia BH -33 is a Czechoslovakian biplane fighter aircraft from the year 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 company Avia. The aircraft was a further development of the Avia BH- 21J, which was equipped with a Bristol Jupiter radial engine. The BH -33 was the first construction of Beneš and Hajn, which provided for from the beginning rudder and fin. Until then, the flat sides of the outgoing trunk were considered an adequate substitute for the tail fin. The lower wing of the biplane had a larger span. The aircraft had a conventional landing gear with tail skid.
The Czech Air Force took over from the modified series at the tail number of aircraft design. 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- 33rd
Variants
BH- 33E
In 1929 a new design. At the Paris Salon Aéronautique Avia presented from the different aircraft. The hull had received a tubular steel construction with an elliptical cross-section. The suspension was then split was a V-shape and axes.
The Czech Air Force ordered some machines which were designated B.33. The three machines were delivered to the USSR, to Belgium and Yugoslavia. The Ikarus built another 20 aircraft under license for Yugoslavia.
In addition to the Bristol Jupiter VI radial engine Avia also tested the Jupiter VII with compressor.
BH- 33L
The aircraft was improved BH- 33E with greater wingspan and a W engine Škoda -L ( a manufactured under license Hispano- Suiza 12Gb ) with an output of 373 kW (500 hp). Avia built a total of 80 machines that were part of the standard equipment of various regiments of the Czech Air Force under the name Ba.33 until the end of the 1930s
BH -133
This was an experimental aircraft, of which only one copy was built in 1930. Base was the BH- 33E. The aircraft was equipped with a Pratt & Whitney Hornet radial engine with an output of 391 kW ( 525 hp). The engine used was a licensed production of BMW.
Military user
- Belgian Air Component: 3 × BH 33-1
- Greek Air Force: 5 BH -33 from Yugoslavian production
- Royal Yugoslav Air Force
- Polish Air Force: izenzbauten 1 BH -33 and 50 PWS-A-L
- Slovak Air Force
- 2 or 3 bought for testing: air forces of the Soviet Union
- Czechoslovak Air Force
- Air Force of the Independent State of Croatia