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Aviation History
1917
1917 - 1075.PDF
OCTOBER 18, 1917. Rear view of the Standard model J tractor biplane. by giving the wings a back-sweep of 50, whilst the low wing loading of 4.5 lbs. per square foot and the employment of the R.A.F.3 wing section make for good climb and the low speed. Unlike the H-3, the top plane, which alone carries the ailerons, overhangs the lower plane by 6 ft. each side. It is also staggered forward about 1 ft. Attachment of the top plane is made to a small central panel, of the same width as the fuselage, supported above the latter by four struts. The overhung is braced from a cabane mounted above the outer pair of interplane struts. The two sections of the lower plane are attached direct to the fuselage. The •wing and other fittings, as on the H-3, are noteworthy for their elaborate character, necessitating intricate brazing. r 2.6 '- 7 • • STHNDHRD MODEL "<J" TRAINING 9Q/PMU- SCOTT fl-7 The pantograph type rubber shock-absorbing device is fitted to the landing gear as before ; the main wheels measure 26 ins. by 4 ins., and the front wheel is 20 ins. by 4 ins. The control is of the dual, interchangeable Dep.-Curtiss type. The engine is a 90-100 h.p. four-cylinder vertical Hall-Scott " A-7," coupled direct to a Standard black walnut tractor screw. The radiator, which is long and narrow, is mounted above the engine. Except for detail improvements, the model J is otherwise similar constructionally to the H-3, so the following characteristics, together with the accompanying illustrations and scale drawing, should suffice :— Span, (top) 44 ft., (bottom) 32 ft. ; chord, 6 ft. ; gap7 5 ft. 11 ins. ; sweep-back, 50 ; dihedral angle, 3 per cent. ; wing section, R.A.F.3; angle of incidence, -2 \°; overall length, 26 ft. 7 ins. ; area of top plane, 264 sq. ft. ; bottom plane, 165 sq. ft. ; total supporting surface (including ailerons), STANDARD MODEL "JR"TRflCTOR BIPLANE I7S HfiLLSCOTT fl-Sfl The Standard ?Model *J iTraining'Tractor|Biplane.— Plan, side and front elevations to scale. , The Standard Model J-R Tractor Biplane.—Plan, side andlfrontjelevations to scale. 1075
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