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Tweed GT-1
The Tweed GT-1 is an American high-wing, FAI Open Class single seat glider that was designed by George Tweed Jr.〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 66, Soaring Society of America November 1983. USPS 499-920〕 ==Design and development==
The GT-1 was built in concert with the Whigham GW-1 as both builders shared ideas and tools. The GT-1 first flew in 1960.〔 The lower part of the GT-1's nose was constructed from a drop tank, with the upper part fabricated from fiberglass that was laid up using the drop tank as a mold. The landing gear is a retractable monowheel. The aircraft was initially fitted with a bubble canopy. Later the fuselage was modified to allow a more reclined pilot seating position and the canopy replaced with a more streamlined one. The modifications added to the glider's empty weight and the gross weight was raised in partial compensation. The GT-1's span wing employs a NACA 43012A airfoil. The initial glide ratio was 29:1, but extensive work gap-filling and contouring the aircraft raised this to 33:1.〔 Only one GT-1 was built and the aircraft was registered in the Experimental - Amateur-Built category.〔
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