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The Brochocki BKB-1 was a Canadian mid-wing, single-seat, experimental tailless glider that was designed and constructed by Stefan Brochocki with assistance from Witold Kasper and A. Bodek. The designation indicated the contributions of all three men. The aircraft was intended to study flight above the stall angle.〔Rogers, Bennett: ''1974 Sailplane Directory, Soaring Magazine'', page 94. Soaring Society of America, August 1974. USPS 499-920〕 ==Design and development== The BKB-1 was constructed in 1959 and built entirely from wood. The wing was swept, had a 9.5:1 aspect ratio and employed a NACA 8-H-12 airfoil. The aircraft had a very high wing area of which resulted in a light wing loading of just 3.81 lb/sq ft (18.6 kg/m²).〔 The prototype BKB-1 was originally registered in Canada as CF-ZDK-X. Later it was moved to the United States, owned by Kasper and registered as N2991G.〔 As a testbed the aircraft went though several modification states. The modifications included aerodynamic devices to improve aircraft control above the stalling angle. These reduced the stall speed to and resulted in a 200 ft/min (1.0 m/s) rate of descent while stalled.This allowed stalled landings with no ground roll. As a result of these and other design changes the aircraft was designated as the BKB-1A, the "A" indicating aerobatics. The aircraft was intended to be fully aerobatic, including tumbling maneuvers.〔 Kasper had a plan to produce the aircraft and the developmental derivative Kasper Bekas, which mount different wings to a common fuselage, as a single kit, with the choice of wings, but it seems none was actually produced.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Brochocki BKB-1」の詳細全文を読む スポンサード リンク
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