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The Glasflügel 604 is a high-wing, T-tailed, single seat, FAI Open Class glider that was designed and produced in West Germany by Glasflügel starting in 1970.〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 81, Soaring Society of America November 1983. USPS 499-920〕 Developed from the Kestrel 17 the 604 is often erroneously called a ''Kestrel 22''. In fact the company never gave it a formal name beyond its number designation.〔 ==Design and development== The 604 was originally intended as a test aircraft for a proposed two-seat glider that was never built. The prototype did so well in competition that a ten-aircraft production run was completed, resulting in a total of eleven 604s being completed, including the prototype.〔〔 Due to the aircraft's huge size, including its three-piece wing that weighs over , the aircraft picked up the nickname "the Jumbo". The wing centre section alone weighs , making rigging it for flight a chore that requires a large crew.〔 The 604 is constructed from fibreglass. The wing employs a modified Wortmann FX 67-K-170 airfoil at the wing root, changing to a Wortmann FX 67-K-150 at the wing tip. The wing features six flaps, with the outer pair moving at a 2:1 differential ratio with the ailerons. For glidepath control the 604 has wing top-surface spoilers and a tail-mounted drag chute. The aircraft can carry of water ballast. The landing gear is a retractable monowheel.〔〔 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「Glasflügel 604」の詳細全文を読む スポンサード リンク
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