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__NOTOC__ The PIK-3 (''Polyteknikkojen Ilmailukerho'' - Finnish institute of technology students flying club) was a sailplane produced in Finland in the 1950s and 60s.〔Taylor 1989, p.726〕 It was designed to be a cheap and easy-to-build aircraft〔Coates 1978, p.24〕 to equip the country's gliding clubs as their standard single-seat machine.〔Hardy 1982, p.74〕 It was a conventional design for its day, with a high wing and conventional empennage.〔〔 Construction was of wood throughout, skinned in plywood.〔〔 Design work commenced in 1942,〔"PIK-sarjan lentokoneet"〕 but the prototype did not fly until 1950.〔〔 Antti Koskinen refined the design for production as the PIK-3A and then further modified the design by replacing the flaps with air brakes, which was designated the PIK-3B.〔〔〔 By the end of the 1950s, a third modification of the original design was carried out by Olavi Roininen〔 as the PIK-3C. This had completely new wings of 15 m (49 ft 3 in) to allow it to compete in the Standard Class.〔 The prototype flew on 20 May 1958,〔〔 and the design was then modified for production by Suomen Ilmailuliitto.〔 ==Variants== * PIK-3 - first prototype with wingspan of 13 m (47 ft 8 in) * PIK-3A ''Kanttikolmonen'' - initial production version of PIK-3 * PIK-3B - PIK-3A with air brakes in place of flaps * PIK-3C ''Kajava'' - PIK-3B with new wings of 15 m (49 ft 3 in) span 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「PIK-3」の詳細全文を読む スポンサード リンク
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