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__NOTOC__ The Yakovlev AIR-3 was a 1920s Soviet two-seat general aviation monoplane designed and built by Aleksandr Sergeyevich Yakovlev.〔 ==Development== Following his design of the earlier AIR-1 and AIR-2, Yakovlev was taken on as a student at the Nikolai Zhukovsky Air Force Engineering Academy, where he designed the AIR-3, which was similar to the earlier AIR-2 biplane but with a strut-braced high parasol wing.〔 Powered by a Walter NZ-60 radial piston engine,〔 the AIR-3 was also known as ''Pionerskaya Pravda'' after the Pionerskaya Pravda, a young-communist newspaper, which had raised funds for the construction from its readership.〔 On 6 September 1929 the aircraft was flown non-stop between Mineralnye Vody and Moscow, a distance of 1835 km, achieving two light aircraft world records.〔〔 In 1930 the design was refined as the Yakovlev AIR-4 with a new split-axle landing gear, wider cockpits fitted with entrance doors and extra fuel.〔 One AIR-4 was modified as the Yakovlev AIR-4MK in 1933 to test nearly full span split flaps. Floating wingtips, which provided roll control, were added to release as much trailing edge as possible for the flaps.〔 A military liaison variant of the AIR-4, the Yakovlev AIR-8, was also produced in 1934 fitted with a Siemens engine and constant chord wings of greater area.〔 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「Yakovlev AIR-3」の詳細全文を読む スポンサード リンク
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