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The Rotorwing-Aero 3D-RV is an American autogyro that was designed by Monte Hoskins and produced by Rotorwing-Aero of Salt Lake City, Utah, introduced in 1989. Now out of production, when it was available the aircraft was supplied in the form of 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 3D-RV was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of . The aircraft has a standard empty weight of when equipped with a Rotax 503 or Rotax 582 engine. With heavier engines it can be registered in the US ''Experimental - Amateur-built'' category.〔 The 3D-RV features a single main rotor, a single-seat open cockpit without a windshield, tricycle landing gear with hydraulic disk brakes, plus a tail caster. The acceptable power range is and the standard engines used are twin cylinder, air-cooled, two-stroke, single-ignition Rotax 503 engine and the twin cylinder, liquid-cooled, two-stroke, single-ignition Rotax 582 engine, mounted in pusher configuration.〔 The aircraft fuselage is made from bolted-together aluminum tubing and welded 4130 steel tubing. Its two-bladed rotor has a diameter of and may use either manufactured metal blades or homemade ''Gyrotor'' wooden blades. The prototype was originally flown with wooden blades of each, with a hub bar, for a diameter of . In this configuration the aircraft flew acceptably, but did not climb well on hot days at higher density altitudes. The minimum control speed is 〔 The initial propeller used was a two bladed ground adjustable unit, but the plans specify a three-bladed ground adjustable design of diameter.〔 The prototype used a conventional low landing gear design, but this was later developed into a high landing gear to set the vertical center of gravity to the prob hub height to prevent longitudinal stability issues and bunt "push-over" accidents. The final design features a tall aluminium rudder.〔 The aircraft has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for the pilot and baggage is .〔 The standard day, sea level, no wind, take off roll with a engine is .〔 The manufacturer estimated the construction time from the supplied plans as 400 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「Rotorwing-Aero 3D-RV」の詳細全文を読む スポンサード リンク
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