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The Glasflügel H-301 Libelle is an early composite 15-metre Class single-seat sailplane produced by Glasflügel from 1964 to 1969. ==Development== In 1964 the H-301 Libelle ("Dragonfly") received the first German and first U.S. Type Certificate issued to an all-fiberglass aircraft. It had flaps, water ballast and retractable landing gear. There are two canopy variants: the normal canopy and a sleeker, lower-profiled 'racing' canopy with no side vent. The canopy is unique in that it has a catch that enables the front to be raised by 25 mm (1 in) in flight to provide a flow of ventilating air instead of the more conventional small sliding panel used for this purpose. The American Will Schuemann pioneered several performance-enhancing modifications to the type, including a re-profiled wing, converting the airfoil to a Wortmann section, various fairings, a new canopy and a reshaped fuselage nose. Aircraft incorporating these changes are informally known as 'Schümanised' Libelles.〔Rogers, Bennett: ''1974 Sailplane Directory, Soaring Magazine'', page 52. Soaring Society of America, August 1974. USPS 499-920〕 The H-201 Standard Libelle was developed in 1967 as a Standard Class variant. The Libelle was a popular and influential design. Its light wings and easy rigging set a new benchmark. Handling is generally easy except that it is sensitive to sideslipping and has relatively ineffective airbrakes that make short landings tricky for inexperienced pilots. The H-201 Libelle (standard class) was superseded by the Hornet. The H-301 Libelle (open class) was superseded by the Mosquito. 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 H-301」の詳細全文を読む スポンサード リンク
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