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Slingsby Swallow
The Slingsby Type 45 Swallow was designed as a club sailplane of reasonable performance and price. One of the most successful of Slingsby's gliders in sales terms, over 100 had been built when production was ended by a 1968 factory fire.
==Design and development==
The Slingsby Swallow was a wooden-framed aircraft, covered in a mixture of plywood and fabric. Its high mounted, cantilever, straight-tapered and square-tipped wing had 3.3o dihedral. It was Gaboon plywood-skinned and built around a single spruce spar, with a leading-edge torsion box. Its unbalanced ailerons were fabric covered; there were no flaps but dive brakes could be extended in pairs above and below the wings. The prototype had a 12 m span wing, but all production aircraft had their performance enhanced by an extension to 13.05 m.〔
The forward fuselage was a plywood semi-monocoque, with the perspex enclosed cockpit immediately ahead of the wing.〔 The strong curvature of the single piece canopy in front of the pilot was later reduced, in Mk.2 aircraft, by extending it forwards. In both versions, access was by removal of the canopy and a surrounding fuselage fairing. The whole fuselage was flat sided, but at the rear fabric covering was used. Fixed tail surfaces were plywood skinned and control surfaces fabric covered.〔 Fin and rudder were noticeably straight edged, the unbalanced rudder extending down to the keel. The slightly tapered tailplane was mounted on top of the fuselage and placed far enough forward that the rudder hinge was behind the elevator trailing edge, so that no cutout for rudder movement was needed.〔 The Swallow used a conventional glider undercarriage, a combination of a rubber sprung skid from nose to below the wing leading edge, plus a fixed, unsprung monowheel below mid wing and a small skid at the rear.〔
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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