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Aviation History
1928
1928 - 0590.PDF
JULY 5, 1928 AVRO "BUFFALO One Napier " Lion XI " Engine GENERAL THE " Buffalo," designed and constructed by A. V. Roeand Co., Ltd. of Manchester and Southampton, is a two- seater torpedo carrying and bombing aircraft, fitted with aNapier " Lion " Series XI engine. This aircraft is specially designed for operation from an aircraft carrier, and itsoverall dimensions, both with wings spread and folded, are suitable for this class of work. The controllability is particu-larly good and the fuselage decking and nose shape is so formed as to give the best view to the pilot both for decklanding and torpedo sighting. A bombing station is provided in the floor of the fuselage so that the observer can lie in aprone position and sight through a large sliding window in the bottom of the fuselage. W/T apparatus, camera, etc., arecarried. Fuselage.—The fuselage is of tubular steel construction,with pin joints and swaged steel tie rods for bracing. The construction is very simple and easy to repair. The deckingis formed of duralumin sheet and the remainder of the fuselage is fabric covered. Wings.—The wings have an aerofoil section designed forminimum C.P. movement and a high maximum lift coefficient. They are constructed on " I " sectioned spruce spars, withWarren girder ribs and tubular steel drag struts. Balanced ailerons are fitted to both top and bottom planes andHandley Page slot's of the control type are arranged to work in conjunction with the ailerons. The wings are covered withlinen fabric, sewn on and doped in the standard manner. The wings have a slight dihedral and considerable sweepback.Wings of steel construction can be supplied if required. Tail.—The tail unit is of tubular steel construction through-out, with fabric covering. Both the elevators and rudder are balanced and the tail plane incidence is adjustable from thepilot's seat. Engine Installation.—The Napier " Lion " Series XI engineis mounted on a built up steel engine mounting, and is carefully cowled. The radiator is of the retractable type andprojects below the fuselage when in the above position. Both the main petrol tank and the gravity tank are carriedinside the fuselage and all fuel and oil piping joints arc made with metallic couplings. Undercarriage.—The undercarriage is of the split axle type,so as to allow a free drop for the torpedo and bombs. Long travel " Oleo " shock absorbers are incorporated and com-pression rubbers are employed for the taxi-ing springs. The undercarriage is specially designed for deck landing. Thetail skid is of robust construction with the compression rubber springing and manganese steel wearing shoe. Power Plant Napier " Lion " Series XI. 553 b.h.p. (normal r.p.m.) . . Reduction gear 0 • 5305 :1 • 0 . . 160 gallons. In fuselage. EngineTotal horse-power Propeller driveFuel capacity Placing of fuel tanks Main Dimensions Wing span (top) .. .. 46 ft. 0 in. (14-02 m.). Wing span (bottom).. .. 46 ft. 0 in. (14-02 m.). Wing chord (top) .. .. 7 ft. 11 in. (2-42 m.). Wing chord (bottom) . . 7 ft. 11 in. (2-42 m.).Wing area 684 sq. ft. (63-5 m.2). Length o.a 37 ft. 3 in. (11-36 m.). Weight and Loading Weight empty .. .. 4,233 lbs. (1,919 kg.).Load carried" 3,187 lbs. (1,445 kg.). Total loaded weight .. 7,420 lbs. (3,364 kg.).Wing loading 10-85rib./sq. ft. (53kg./sq. m.) Power loading .. .. 13-31 b./b.h.p. (6-08 kg./CV.). Performance Speed at ground level Speed at 5,000 ft. (1,525 m.) Speed at 10,000 ft. (3,050 m.). Landing speed Climb to 5,000 ft. (1,525 m.) Climb to 10,000 ft. (3,050 m.) Service ceiling Absolute ceiling Range at full throttle 135 m.p.h. (217 km./hr.).132m.p.h. (212-5 km./hr. 123 m.p.h. (198 km./hr.).60 m.p.h. (96-6 km./hr.). 8 mins.21 mins. 13,700 ft. (4,175 m.).15,700 ft. (4,785 m.). 440 miles (700 km.). " Everting Quantities " (590 h.p. max.) High-speed figures . . . . 18-5 Distance figure .. ..4-5 , ... Altitude figure .. ..5-25 . _ :. v 538
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