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Aviation History
1928
1928 - 0601.PDF
]ULV 5, 1928 [" FLIGHT " Photograph GLOSTER "GAMECOCK II One Bristol "Jupiter" Engine GENERAL THE " Gamecock " is a high performance single-seaterfighter fitted with Mark VI " Jupiter" air-cooled radial engine of 420 h.p. It forms part of the standard equipment ofthe Royal Air Force and is one of the fastest and most manoeuvrable machines in the service. In the handicap race for the Sassoon Cup in 1927, " Game-cock " machines won first, second and third places, and in the 1928 race also the fastest speed was attained by a " Game-cock " machine. It has recently been adopted by the Finnish Air Serviceand is being manufactured under licence in that country. The machine is supplied either in wood or metal orcomposite structure as required. It is exceedingly clean and compact in design, givingexceptional manoeuvrability. The lay-out of the equipment is a striking feature. Accessibility to the engine and allessential parts, by easily removable inspection doors, makes it a machine economical to maintain in service. The wings consist of a high lift section upper wing and amedium lift section lower ring of reduced span and chord. The latest version differs from the prototype in that a centresection has been introduced between the upper wings and narrow chord ailerons substituted for the earlier type,giving a much more rigid construction. Fuel tanks are situated in the upper wings giving a fool-proof gravity feed. The undercarriage is of the o!eo type damper action withrubber in compression. The armament consists of two Vickers' guns in groovedrecesses in the sides of the body firing through the propeller with synchronising gear and 1,200 rounds of ammunition.Provision is also made for fitting racks to carry 4-20 lb. (9 kg.) bombs. Engine Fuel capacityOil capacity Position of fuel tanks Power Plant 420 h.p " Jupiter " air-cooled radial Series VI, giving 520 h.p. at 1,870 r.p.m. .. 52 gallons (236 litres). 5| gallons (25 litres). Two tanks mounted in top wings. Main Dimensions Wing span (top) . . .. 30 ft. 1 in. (9-200 m.).Wing span (bottom). . ..26 ft. 44 in. (8-050 m.). Wing chord (top) .. .. 5 ft. 3 in. (1-600 m.). Wing chord (bottom) . . 5 ft. 2\ in. (1-587 m.).Gap 4 ft. 10 in. (1-473 m.). Surface area 263 sq. ft. (24-4 m.2). Weight and Loading Total loaded weight .. 2,820 lbs. (1,280 kg.).Load per sq. ft 11 lbs./sq. ft. (53-6 kg./m.2). Loadperh.p. .. .. 5-561bs./h.p. (2-56 kg./C.V.) Performance Speed at 5,000 ft. (1,524 m.).. 155 m.p.h. (249 kms./h. Speed at 10,000 ft. (3,050 m Climb Climb Ceiling absolute Landing speed Duration : 2i load. 152 m.p.h. (244 kms./h.). 1H mins. to 15,000 ft. (4,570 m.). .. 20 mins. to 20,000 ft. (6,095 m.). .. 25,500 ft. (7,780 m.).. . 49 m.p.h. (79 kms.). hours at 15,000 ft. (4,570 m.) with full 549
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