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Slingsby Skylark 3
The Slingsby T.43 Skylark 3 was a single seat Open Class sailplane developed from the Skylark 2 with an extended wingspan. It gained first place at the 1960 World Gliding Championships.
==Development==
The first of Slingsby's Skylark series to go into production was the Skylark 2, a single seat competition sailplane with a span of just under 15 m. Its successor, the Skylark 3 had much in common, but had a span increased to over 18 m and a consequent increase in aspect ratio. It, too went into production and sold in numbers.
The Skylark 3 had high, pylon mounted wings with an inner section of parallel chord extending out almost to mid span, followed by an outer section with taper on the trailing edge. Ailerons filled much of the outer sections and airbrakes, operating in pairs above and below the wings, were mounted on the main spar in the inboard section.〔 The structure of the wing, like that of the rest of the aircraft was wooden, built around a main spar and a lighter rear spar and Gaboon ply covered from this rear spar forward. Behind this spar the wing was fabric covered, though the ailerons were ply skinned. The fuselage was a semi-monocoque, elliptical in cross section and built around spruce frames with a plywood skin. The cockpit was immediately ahead of the pylon and wing leading edge, enclosed with a perspex canopy. Tapered and clipped tailplane and elevators were mounted on top of the fuselage, far enough forward that the rudder hinge was behind the elevators. These surfaces were plywood covered. Fin and rudder together were tapered and flat topped; the fin was also ply skinned, but the unbalanced rudder was fabric covered. Compared with the Skylark 2, vertical tail areas were increased by 35% and horizontal areas by 23%. The undercarriage was conventional, with a nose skid, fixed monowheel and a small, faired tailskid.〔
The Skylark 3 flew for the first time in July 1955. 70 were built; of at least 7 subtypes, the 3A, 3B and 3F were the most numerous.〔
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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