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Avia BH-22

In the twenties, it was customary in Czechoslovakia with the introduction of a new type to order trainer version of the aircraft. The trainer should have its flying qualities and characteristics as close as possible to the fighting machines, and lower operating costs due to a smaller engine. With the B-21 Avia anticipated this need and began work on the new aircraft.
Based on the B-21, the fundamental change was the replacement of the HS-8Fb engine with a less powerful HS-8AA. It had smaller dimensions and weight and only 180 hp, compared to 300 in B-21s. The B-22 was also slightly shorter than the B-21 and was not armed. The weapons of the BH-21 were deleted and replaced by a camera gun. The structure was strengthened overall to allow for aerobatics.
In 1925, designers Pavel Benes and Miroslav Hain built the plane, receiving the BH-22 designation.
The prototype was ready in the first half of 1925 and flew 29 July 1925 with the original French motor HS 8A.
In August 1925, representative defense and military pilots conducted several tests at Kbelská airport. Evaluation of the new machine was positive and the first order for 18 aircraft was handed to Avia on 20 July 1926. The factory was already sure of his success, so preparation for serial production had started in April 1926, hence the first production B-22 was completed in July 1926. In January 1928 a second order was received, the dvacetikusová series. Delivery took place in October 1928.
The total number of machines was forty - 38 series for MNO, one prototype and one aircraft has remained in the ownership of AVI (BH-22.3, license plate L-BONL), among others. In 1927 it attended an aviation meeting in Zurich). Most production B-22 went to Cheb flying school, with air regiments using two aircraft for aerobatics currency.
In 1926 a pair of B-22 aircraft modified for training in night flying. The new designation for these aircraft was BH-22N or later, BH-23.
The type saw long service as a special aerobatic trainer and eventually several examples found their way into Czechoslovakia's aero clubs.
During service in Czechoslovakia, Air Force B-22 changed colour schemes several times. Initially available in conventional three-color camouflage with silver bottom surfaces.


A BA-22 was specially built aircraft for performing low-level aerobatics flown by Siroky and Hubacek. Its predecessor had been a special aeronautic version of BH-22 built  in 1925. This BH-22 piloted by Staff Cpt Malkovsky triumped in the 1927 Zuerich International Flying Meeting. Malkovsky lost his life in June 1930 while performing aerobatics on this BH-22 type at the Carlsbad Air Show. His plane broke up and crashed.
Engine: 1 × Skoda-built Hispano-Suiza 8Aa, 134 kW (180 hp)
Wingspan upper: 8.50 m
Wingspan lower: 8.90 m / 29 ft 2 in
Wing area: 21.96 sq.m / 237 sq.ft
Wing chord: 1.35 m
Length: 6.87 m / 22 ft 6 in
Height: 2.74 m
Empty weight: 686 kg / 1,512 lb
Gross weight: 860 kg / 1,896 lb
Wing loading: 37.7 kg/sq.m
Maximum speed: 216 km/h / 134 mph
Cruising speed: 181 km / h
Landing speed: 75 kph
Service ceiling: 6,200 m / 20,341 ft
Rate of climb: 3.8 m/s / 745 ft/min
Climb to 5,000m: 22 min
Range: 600 km
Crew: two, pilot and instructor




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