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Slingsby Skylark
The Slingsby T.37 Skylark 1 was a sport sailplane of moderate dimensions, built during 1952-3 at Kirbymoorside, Yorkshire by Slingsby Sailplanes
==Design and development==
Fred Slingsby wanted to take a larger slice of the glider market with a small low-cost sailplane with better than average performance. The key to this ethos was smaller aircraft use less materials and modern aerofoil sections could give much better performance. Slingsby appointed John Reussner as draughtsman and designer for the T.37 Skylark. The relatively new five-digit NACA series of aerofoil sections was chosen because they would give low drag over a wide airspeed range ("wide Drag Bucket"). To maintain laminar flow and gain the benefit of the NACA sections it was necessary to build the wings very accurately and ensure that the surface remained true during the life of the aircraft. This was achieved by using the low-density but stiff Gaboon plywood, the leading edge was fashioned from accurately-spindled hollow spruce members with rebates to accept the gaboon ply wing panels extending back to the rear spar, leaving only a small area to be covered with fabric. The fuselage was a simple structure built up from struts and covered with plywood back to the rear of the wing support pylon, and fabric covering over the rear fuselage. Ply-covered tail surfaces and fabric-covered control surfaces completed the airframe. Further weight and cost was saved by not fitting a landing wheel.
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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