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Aviation History
1917
1917 - 0267.PDF
MARCH 22, 191;. THE WRIGHT-MARTIN THE Wright-Martin Model "V" is a tractor biplane of 150 horse-power, designed for long range military reconnaissance, with the observer's cockpit well forward of the entering edge of the lower wings. The power plant consists of a Simplex Model A Hispano-Suiza eight-cylinder water-cooled engine MODEL "V"RECONNAISSANCE BIPLANE. two-seater interposed. An oil radiator is located flush with the under cowl and connects with a separate oil tank of 4 gallons capacity in the rear of the engine compart- ment. The wings are staggered and have a slight dihedral angle. Three sections comprise the upper plane, the two outer sections being attached to a central|panel THE WRIGHT-MARTIN MODEL "V° TRACTOR BIPLANE.—Three-quarter front view. (made under the Birkigt patent), driving direct a two-bladed tractor screw. The propeller is equipped with the French standard hub, keyed and locked to the tapered crankshaft extension. As with the Model R, the motor unit is located in a demountable nose compartment, of tubular and pressed-steel construction, enclosed with hammered- supported above the fuselage by two pairs of struts. The lower wings are in two sections attached direct to the fuselage. The hinged wing attachments are locked together with nickel steel qtfick-detachable pins. The curve is the Vought 4, developed to meet the requirements of maximum efficiency, wide speed range and structural safety. A noteworthy charac- THE WRIGHT-MARTIN MODEL "V" TRACTOR BIPLANE View from the rear. sheet aluminum bonnet fitted with large doors and louvred ventilators. The fuselage entry is formed by the oval German silver cellular radiator located imme- diately back of the propeller. The radiator is sup- ported by novel means directly on the pyramided motor mounting, with a vibration-absorbing medium teristic is the minimum translation of the centre of pressure throughout the useful range of incidence angles. The chord, 5 ft. o,§ ins., is the same for both planes, and a differential incidence setting is used. The curve permits of the employment of two vfery substantial 267 E
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