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Aviation History
1920
1920 - 0725.PDF
JULY 8, 1920 and the low landing speed, together with the extra strong landing chassis, enables it to alight or get away from very small fields, etc. Except that the main planes are given a slight sweepback, the construction follows usual Sopwith practice, so that further description here is unnecessary. Fuel is carried for a period of 2| hours at a cruising speed of 85 m.p.h., and an adjustable tail plane allows of the machine being flown with the maximum comfort. The " Gnu " has been designed to meet the requirements of a light, high-speed machine for passengers or cargoV It SOPWITH ANTELOPE. can be equipped either with the 200 Bentley rotary or with the no h.p. Le Rhone—both engines having proved extremely reliable upon active service. It is a tractor biplane, following along orthodox practice. Accommodation is provided for two passengers, or the equivalent in cargo, who are totally enclosed in a roofed and windowed cabin. The pilot is placed well forward in front of the cabin, and has very good visibility, being well protected from the " slip stream," enabling him to fly long distances without suffering dis- comfort. The " Gnu " possesses a speed variation of 100 per cent,, pulling up when landing and taking off-—owing to its light weight—very quickly. With the 200 h.p. Bentley SOPW/Th "GNU" rotary, fuel is provided for a range of 250 miles, whilst in the case of the Le Rhone engined machine, this distance becomes 300 miles. The engine unit is extremely accessible, and in the event of necessity can be changed by two mechanics in five hours. An adjustable tail plane is fitted, enabling the pilot to trim the machine to suit the particular load that is being carried at the moment. The construction of the fuselage is on perfectly normal lines, and, if necessary, replace- ments or inspection can easily be carried out. The " Antelope " is also a tractor biplane, on more or less normal lines, and is intended to serve the purpose of a utility machine, characterised by the highest possible performance compatible with great structural strength and having a wide speed range—38 to 100 m.p.h. Accommodation is provided for pilot and two passengers, the former being located high up between the main planes, whilst the latter are enclosed in a comfortable cabin of 50 cubic ft. capacity, aft of the planes. A door in the side of the cabin enables the passengers to enter straight from the ground. Triplex windows in the cabin provide a good field of view, whilst one of the passenger's seats is adjustable so that, on sliding open a door in the roof, the passenger may sit in the open if desired. The engine, a 180 h.p. Hispano-Suiza " Viper," is enclosed by a quick de. tachable cowling, giving extreme accessibility, and is fitted with a Back and Manson self-starter, operated from the pilot's cockpit. A fire-proof bulkhead is interposed between the fuel tanks and engine. There are no welded joints in the machine. Supermarine Aviation Works, Ltd. (STAND 45) - • Southampton. •''••: THE Supermarine Co. are showing two complete machines, the " Sea-King," and the " Channel," both flying boats, and an extra control unit for converting the standard 4-seater machine into a school type. SVPERMAHINB "CHANNEL Type" LENGTH 30"-0" SPAN S0'-5i' The " Sea-King " is a small single-seater fighting scout, fitted with a 160 h.p. Beardmore engine. In general design this machine is similar to the " Baby," and the Schneider Cup models of last year. The hull is practically of circular cross-section, with a V-bottom from stem to step, which is situated under the main planes. Between the first step and the stern a second step " grows " out of the hull. The pilot is seated well forward. Upper and lower planes are each in three sections, and the interplane struts, of which there are four pairs, slope outwards. The two innermost pairs are located at the centre sections, the lower one of which is of considerably smaller span than the upper ; this lower section is supported on the hull by two pairs of struts, forming con- tinuations of the centre-section interplane struts. The SUPEBM&RINE PLYING BOAT "SgA KING " LENGTH 23'9"r engine is mounted, in a streamline housing, midway between the planes on the lower centre section by six struts. The tail plane is of the monoplane inverted camber type, mounted on the top of a vertical fin above the stern of the hull. Wing-tip floats are mounted below the outer interplane struts. The speed range of the " Sea-King " is 51 to 96 knots (58-7 to 1105 m.p.h.). The " Channel Type " flying boat is a commercial machine providing accommodation for pilot and three passengers. It can, however, also be converted into a reconnaissance machine for war work in the following ways:—(a) With pilot and gunner, machine gun, W.T., and two 50 lb. bombs* Range, 350 miles, (b) With pilot and observer, machine gun and two 100 lb. bombs. Range, 350 miles, (c) With The Sopwith "Gnu" limou- sine m m m m m as 725
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