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Aviation History
1928
1928 - 0594.PDF
JULY 5, 1928 THE "BRISTOL" SINGLE-SEATER FIGHTER One Bristol " Jupiter " Engine GENERAL THE Bristol single-seater fighter exhibited at the ParisAero Show was designed and built b\T the Bristol Aeroplane Co., Ltd., of Filton, Bristol, and is an all-metal machine inwhich the material of construction is mainly steel, and more particularly sections formed from flat steel strip, the Bristolfirm having done a great deal of research work on this type of construction during the last few years. The machinecarries the usual single-seater fighter armament in the form of two machine guns firing " through " the propeller. Fuselage.—Kntirely of metal construction, with the excep-tion of the fabric covering. The front portion is of circular section steel tube construction, but the rear portion, from thepilot's cockpit to the tail, has longerons and struts of strip steel, formed to somewhat unusual sections. Wings.—Arranged in the form of an unequal span, unequalchord biplane, the wings are, with exception of the fabric covering, of all-steel construction. The spars are built upfrom steel strip, flanges and webs being joined by riveting. In a later type of Bristol spar only a very small numberof rivets are used, the " curled " edge of the strip serving to bind the parts together. The wing ribs are of channelsection, but a section which has ridges and " curls" to prevent buckling, thus making the use of very thin materialpossible. Both upper and lower wings have their trailing edges cut away in the centre to improve the view. Friseailerons are fitted to the top plane only. Tail.—Both vertical and horizontal tail surfaces are ofcantilever type, with a rather unusual trimming gear for the tail plane. It is of steel construction and fabric covered. Engine Installation.—The "Jupiter" engine is particularlyneatly mounted in the nose, and the cylinders are carefully cowled for streamlining. The petrol tanks are in the topplane, and direct gravity feed to the engine is employed, avoiding the use of pumps. Undercarriage.—Oleo-pneumatic, with long travel. Thetelescopic front legs are attached at their upper ends to the top longerons instead of to the bottom, and are neatly fairedinto the fuselage covering. Power Plant KngineTotal horse-power Propeller drive Fuel capacityNo. and placing of fuel tanks Bristol " Jupiter."420 b.h.p. Direct.70 gallons (315 litres). Two, in top plane. Main Dimensions Wing span (top) . . . . 33 ft. 10 in. (10-32 m). Wing span (bottom). . . . 27 ft. 6 in. (8-38 m.). Wing chord (top) '.. .. 6 ft. 4 in. (1-93 m.). Wing chord (bottom) . . 4 ft. 9 in. (1 -45 m.).Wing area 307-15 sq. ft. (28-55m.2 Length o.a 24 ft. 10 in. (7-6 m.). Weight empty Load carried Total loaded weight Wing loading. . Power loading (on 420 b.h.p.) Weights and Loading .. 1,990 lbs. (905 kg.)... 1,135 lbs. (516 kg.). 3,125 lbs. (1,421 kg.). 1017 lbs. /sq. ft.(49-8kg. /m.!).7-44 lbs./h.p. (3-385 kg./CV). Performance Speed atSpeed at Speed atSpeed at Speed atSpeed at Speed atSpeed at Climb toClimb to Climb toClimb to Climb toClimb to Absolute ground level5,000 ft. (1, 10,000 ft. (315,000 ft 20,000 ft 25,000 ft28,000 ft 29,200 ft5,000 ft. (1 10,000 ft. (315,000 ft. (4 20,000 ft. (6 25,000 ft. (7 29,200 ft. (8ceiling (4, (6, •(7, (8 (8 .. 148m.p.h. 525 m.) 156 m.p.h. 050 m.) 176 m.p.h.570 m.) 176 m.p.h. 100 m.) 172 m.p.h. 620 m.) 166 m.p.h. ,540 m.) 154 m.p.h. ,900 m.) 149m.ph.,525 m.) 2-9mins. ,050 m.) 5-4mins.,570 m.) 8-2 mins. ,100 m.) 12-1 mins. ,620 m.) 18-8 mins.,900 m.) 31-0 mins. . . 30,300 ft. (9,240 m (238 km./h.).(251 km./h.). (283 km./h.).(283 km./h.). (277 km./h.).(267 km./h.). (248 km./h.).(240 km./h.). Us-:.. 542
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