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Laister LP-49
The Laister LP-46 and LP-49 are a family of American high-wing, single-seat, gliders that were designed by Jack Laister and produced by Laister Sailplanes both as kit aircraft and as certified complete aircraft.〔Said, Bob: ''1983 Sailplane Directory, Soaring Magazine'', page 14. Soaring Society of America, November 1983. USPS 499-920〕
==Design and development==
The original model, the LP-46 was first flown in 1966, with the ''LP'' designating ''Laister Products''. The LP-46 features a wingspan and the first LP-46 has fixed monowheel landing gear.〔〔
The LP-49 is an improved version of the LP-46, designed for the Standard Class with a wingspan. The LP-49 has a metal wing with a NACA 64(3)-618 laminar flow airfoil and all-metal tail surfaces. The control surfaces are all counter-weighted with intenal weights. The fuselage is a semi-monocoque fiberglass design, mounting a shock-strut suspended retractable monowheel landing gear with an automatic swivelling and retractable tailwheel. The ailerons and dive brakes automatically hook up on aircraft assembly. Due to the fuselage construction the aircraft type certificate contains the restriction "All external portions of the fuselage exposed to sunlight must be painted white, except for a minimum amount of light shaded markings."〔〔
The LP-49 was static-tested to 12 g and is approved for aerobatics including loops, spins and wing-overs. The aircraft is often called ''The Forty-Niner''.〔〔
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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