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Aviation History
1928
1928 - 0588.PDF
JULY 5, 1928 [" FLIGHT " Photograph A.D.C. " NIMBUS-MARTINSYDE *» One A.D.C. " Nimbus" Engine GENERAL ORIGINALLY designed by the now defunct Martin andHandasyde Company, the " Nimbus-Martinsyde" is a modification by A. D. C. Aircraft, Ltd., who hold stocksof a number of Martinsyde F.4 biplanes and who, moreover, have purchased the goodwill of the Martinsyde company.The "Nimbus-Martinsyde" remains an F.4 in almost all respects, except that the nose has been re-designed to takethe A.D.C. " Nimbus " engine produced a few years ago. The Martinsyde biplanes were ever known for their excellentqualities, aerodynamic and structural, and the present machine has maintained that reputation. As a single-seaterfighter, it is a very useful machine, and for service in countries where it is not essential that all-metal construction shouldbe used, this machine offers a low-priced low-powered supply with good performance for the small power used. Fuselage.—Of wood construction, simple and cheap tomaintain and repair, the fuselage is of good streamline shape as evidenced by the performance of the machine. The topcentre-section is placed low over the cockpit, so that the pilot obtains a good view past the top plane. The two Vickersguns are placed one on each side, and provided with the usual interrupter gear. The aircraft controls are of normaltype, and the machine is very manoeuvrable and light on the controls. Wings.—Of standard two-spar construction, with sprucespars spindled out to an I-section, and light wooden ribs, the whole covered with fabric. The top centre-section issupported on a cabane of four wire-braced wooden struts, while the two halves of the lower wing are attached directto the fuselage. Tail.—Of wood construction, fabric covered. The tailsurfaces are of generous area, and the controls are very effective. The tail plane is braced downwards by one strutand one wire on each side, and on top by wires to the fin post. Engine Installation.—The 300/330 h.p. A.D.C. " Nimbus "engine is extremely neatly cowied-in and faired into the lines of the fuselage, thereby contributing materially to the low drag of the machine. The radiator is mounted behind and below the engine. Undercarnaqe.—Of simple two-wheeled Vee type, with axle running across and springing provided by easily-renew- able rubber cords. Power Plant Engine Total horse-power. . Propeller drive Fuel capacity Placing of fuel tanks Fuel supply Wing span . Length o.a. Height . . A.D.C. " Nimbus." . . 330 b.h.p. Direct. .. 321 lb. (146 kg.). In fuselage. By pump. Main Dimensions 32 ft. 9 in. (9-98 m.). 26 ft. 10 in. (8- 18 m.). 9 ft. 6 in. (2-9 m.). Weights and Loading Weight emptyFuel and oil Military load—-Two Vickers' guns 1,200 rounds of ammunition Crew . . Totayoaded weight 2,014 lb. (913-5 kg.). 321 lb. (146 kg.). 66 1b. (30 kg.). 94 1b. (42-6 kg.). 1701b. (77 kg.). 2,665 1b. (1,208-8 kg.). Performance Maximum speed Cruising speedLanding speed Climb to 10,000 ft. (3,050 m.jClimb to 15,000 ft. (4,570 m.) . . Climb to 20,000 ft. (6,100 m.) .. Service ceilingEndurance at cruising speed Range at cruising speed (still air) 150m.p.h. (241 km./h.).131 m.p.h. (211 km./h.). 50 m.p.h. (80 km./h.). 7-5 mins.14 mins. 25 mins. 23,500 ft. (7,163 m.).2£hrs. 327 miles (527 km.). 536
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