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Vortech Kestrel Jet
The Vortech Kestrel Jet is an American tip-jet helicopter that was designed in the 1980s. Kits for amateur construction were originally provided by Vortech and plans remain available.〔Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page F-8. Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4〕〔Downey, Julia: ''2005 Trikes 'Chutes and Rotorcraft Directory'', Kitplanes, Volume 22, Number 2, February 2005, page 60. Belvoir Publications. ISSN 0891-1851〕〔Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition'', page 334. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1〕
==Design and development==
The aircraft was designed to fit into the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of . The aircraft has a standard empty weight of . It features a single main rotor, a single-seat open cockpit without a windshield and skid landing gear. Power is supplied by two G8-2-20 rotor tip jets that run on propane, consuming per hour and producing of thrust each.〔〔〔
The aircraft fuselage is made from bolted-together aluminum tubing. Its main rotor is in diameter. Due to the lack of torque produced there is no tail rotor and instead the Kestrel mounts a circular-shaped rudder for directional control. Controls consist only of cyclic, rudder and throttle.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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