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Schneider ES-57 Kingfisher
The Schneider ES-57 Kingfisher is a low cost, short span Australian glider capable of respectable cross country soaring flights. It was produced in small numbers in the late 1950s.
==Design and development==
The Kingfisher, with its span and simple construction was designed to fill the need of Australian glider pilots for a small low cost aircraft capable of soaring and cross country flying in the hands of pilots without high goals and large bank balances. In addition small sailplanes, with their tight turning circles, had an advantage in the strong but narrow thermals often found over semi-desert. It was designed by Edmund Schneider, who had emigrated from Germany in 1950, and built in his Australian factory, though a few were constructed by amateurs.〔
The Kingfisher is wooden framed and covered with a mixture of plywood and fabric. Its high wing is built around a single spar and is double straight tapered in plan with zero sweep at the quarter chord line. There is 3° of dihedral. Ahead of the spar the wings are ply covered and the roots are reinforced with wider, rectangular plan, ply skin as are the blunt wing tips. The remaining 68% of the wing is fabric covered, including most of the aileron surfaces. Gapless upper surface spoilers are mounted at 44% chord and at about one third span.〔〔
The fuselage is of frame and stringer construction and wholly ply covered apart from the small, fabric covered, double curved region between cockpit and nose. It has a hexagonal section, with deep sides which slope inwards towards the fuselage bottom. The cockpit stretches aft to the leading edge, covered by a blown, side opening perspex canopy. There are small side windows under the wing. The fuselage tapers aft to the tail where a narrow, ply skinned fin carries an angular, fabric covered rudder which extends down to the keel. Originally the horizontal tail was mostly fabric covered and mounted on top of the fuselage ahead of the rudder but early flight tests led to it being raised out of the wing's wake on a short pillar. Its rigidity was increased with ply covering on the tailplane, its tips extended rearwards to contain shortened elevators. The Kingfisher had a short protective skid under the nose but landed on a single, unsprung, semi-recessed wheel aided by a rubber sprung tail skid.〔〔
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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