Avia BH-9, BH-10, BH-11
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 ENGINE1 x 60hp Walter NZ
    Take-off weight550 kg1213 lb
    Empty weight345 kg761 lb
    Wingspan9.72 m32 ft 11 in
    Length6.64 m22 ft 9 in
    Height2.53 m8 ft 4 in
    Wing area13.60 m2146.39 sq ft
    Max. speed158 km/h98 mph
    Cruise speed125 km/h78 mph
    Ceiling4500 m14750 ft
    Rate of climb200 m/min650 ft/min
    Range470 km292 miles

Park, e-mail, 21.06.2013reply

The Avia BH-9 was a one-seat sport aircraft built in Czechoslovakia in 1923, based on the BH-5. As with other developments in the BH-1 lineage, the BH-9 was a low-wing braced monoplane that accommodated the pilot and passenger in tandem, open cockpits. The BH-9's structure was strengthened to allow for the use of a higher-power engine than in its predecessors, and for the first time, this was a domestically-produced powerplant.
The Czechoslovakian Army showed interest in it as a trainer and liaison aircraft, and ordered 10 examples under the designation B.9.
A B.9 won the 1925 Coppa d'Italia air race, and the following year, one was flown on a 1,800 km (1,100 mi) circuit Prague-Paris-Prague with an average speed of 131.2 km/h (82 mph).

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