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The Showers Skytwister Choppy is an American helicopter that was produced by Showers-Aero of Milton, Pennsylvania, introduced in 1992. Now out of production, when it was available the aircraft was supplied in the form of CAD plans for amateur construction.〔Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition'', page 331. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1〕 ==Design and development== The Skytwister is an modernized and updated version of the Adams-Wilson Hobbycopter, also called the "Choppy", as redesigned by Ben Showers.〔〔 The Skytwister was designed to comply with the US ''Experimental - Amateur-built'' aircraft rules. It features a single main rotor, a two-bladed tail rotor, a single-seat open cockpit with a windshield and skid-type landing gear. The standard engine used is a twin cylinder, liquid-cooled, two-stroke, dual-ignition Rotax 582 powerplant with a 2.58:1 reduction drive, which replaces the original Choppy's motorcycle engine.〔 The aircraft fuselage is made from bolted-together aluminum tubing. Its two-bladed Fleck 2706 aluminium alloy main rotor is made as an extrusion and has a diameter. The tail rotor has a diameter of . The aircraft has an empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for pilot and baggage is .〔 The designer estimated the construction time from the supplied plans as 300 hours.〔 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「Showers Skytwister Choppy」の詳細全文を読む スポンサード リンク
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