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The Reynard R.4 Primary was an open seat primary glider with an open girder fuselage and a high, wire braced wing. It was designed and built in the UK in 1930 and a few served Gliding Clubs in England and Ireland. ==Design and development== Like other primary gliders, the Reynard R.4 Primary was a simple, wooden, robust design, not intended for high performance. The wing was rectangular in plan, with ailerons at the tips but no flaps or airbrakes. N-form struts from the wing supported a girder about 8.5 ft (2.6 m) long and curved on the underside to form a landing skid. The pilot's seat and controls were placed, exposed, on its upper surface just ahead of the wing. Lift wires ran from this girder to the underside of the wing beyond mid-span and a pair of landing wires on each side were fixed to the apex of a two strut, triangular central cabane or kingpost above the wing.〔 Behind the wing trailing edge and the end of the lower girder the rear fuselage was a tapering, vertically orientated, two bay Warren truss, ending at a vertical cross member which supported the rudder. The triangular tailplane and fin were mounted on the horizontal upper fuselage beam and the straight edged rudder extended down through a cut-out between the elevators to the lower beam.〔 Some Reynards were built with a hinged nacelle to give the pilot better protection from the weather, though still in an open cockpit. To compensate for the extra side area the rear two bays of the fuselage were fabric covered.〔〔 It has been suggested〔 that at least two R.4s were built with steel tubed rather than wooden rear fuselages, under the name Reynolds R.4 after the contemporary bicycle tube frame manufacturer. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Reynard R.4 Primary」の詳細全文を読む スポンサード リンク
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