page_title: Tweed GT-1
section_title: Design and development
hierarchical_section_title: Tweed GT-1 / Design and development
caption_attribution_description: English: First full assembly of the GT-1 in the backyard of the house in La Mesa, CA, where it was built in the garage over several years in the late 1950s.
context_page_description: The Tweed GT-1 is an American high-wing, FAI Open Class single seat glider that was designed by George Tweed Jr.
context_section_description: 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 200 lb (91 kg) to the glider's empty weight and the gross weight was raised 100 lb (45 kg) in partial compensation. The GT-1's 51 ft (15.5 m) 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.
caption: First full assembly of the GT-1 in the backyard of the house in La Mesa, California, where it was built in the garage over several years in the late 1950s. The GT-1 has the early bubble canopy in this photo.
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