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Aviation History
1939
1939 - 1224.PDF
AFKIL 27, 1939 FLIGHT. 419 46ft. 8in. (14.22 m.) 32ft. 2in. (9.83 m.) 278 sq. ft. (25.8 sq. m.) 3,500 lb. (1,587 kg.) 5,500 lb. (2,494 kg.) 203 m.p.h. (326 km./hr.) 181 m.p.h. (291.2 km./hr.) 58 m.p.h. (93.3 kra./hr.) 200 yd. (182.8 m.) 21,000ft. (6,553 m.) 6,500ft. (1,981 m.) l,150ft./min. (350.5 m./min.) 700 miles (1,126 m.) .Span Length Wing area Weight empty All-up weight... Maximum speed Cruising speed (7,000ft.) Landing speed (flaps down) Take-off run Service ceiling Ceiling (one engine) ... Initial rate of climb ... Cruising range Apart from the Mew Gull—which is by no means a freak racing machine and carries, in one form, a payload of 483 lb. over a range of 860 miles at a cruising speed of 220 m.p.h.—the Percival Com pany also make the Vega Gull, which is eminently suitable for general charter work. The Vega is a four-seater low-wing cabin monoplane with a Gipsy Six engine. The occupants are seated in two pairs, and there is .ample luggage space at the rear of the cabin. The wings are fold- able and the machine is fitted with effec tive split flaps. The figures for the c.p. airscrew (Series II Gipsy Six engine) Vega Gull are: Span ... ... . Length Span (wings folded) Maximum speed Cruising speed (sea level) ... Cruising speed (7,000ft.) ... Take-off run Weight empty All-up weight Standard range Payload (less pilot and equipment) 39ft. 6in. (12.039 m.) 25ft. 4in. (7.721 m.) 16ft. (4.877 m.) 175 m.p.h. (281 km./hr.) 160 m.p.h. 258 km./hr.) 170m.p.h. (274 km./hr.) 185 yd. (169 m.) 1,740 lb. (783 kg.) 3 250 1b. (1,460 kg.) 660 miles (1,060 km.) 1,002 lb. (455 kg.) Makers Percivai Ai.craft, Ltd., Luton Airport, Luton, Beds. POBJOY TWO machines which have never, perhaps, received their full recogni tion by operators are the Pobjoy-Short Scion twin-engined feeder line machine and the Scion Senior, which is a four- engined machine for rather more serious operations. Quite a few of each, both on floats and on wheels, are used in different parts of the world. Both of the machines are of all-metal construction aad the Senior was initially built as a scaie-model test machine for Short Empire boat development. The engines in each case are 90 h.p. Pobjoy Niagara III radials. The figures for the Scion Junior landplane- (five passengers are normally carried when it is used for feeder-line work) are:— Span ... Length Wing area Weight empty ... Actual payload All-up weight ... Maximum speed Cruising speed (3,200 r.p.m.) Landing speed 5 Initial rate of climb Range (standard tanks) 42ft. (12.8 m.) 31ft. 6in. (9.0 m.) 255.5 sq. ft. (23.75 sq. m.) 1,875 lb. (850.5 kg.) 1,057 lb. (479.3 kg.) 3,2001b. (1,451.5 kg.) 128 m.p.h. (206 km./ta.) 116 m.p.h. (187 km./hr.) 50 m.p.h. (80km./hr.) 625ft./min. (190 ro./min.) 390 miles (624 km.) The figures for the Short Scion Senior in its well-known seaplane form (carry ing nine passengers for airline work) are: Span ... Length Wing area Weight empty (with equipment) Payload (with pilot) All-up weight ... Maximum speed . . Cruising speed (3,200 r.p.m. Landim: speed Initial rate of climb Service ceiling on three engines Range (standard tanks) 55ft. (16.78 m.) 42ft. (12.8 m.) 400 sq. ft. (37.2 sq. m.) 4,058 lb. (1,842 kg.) 1,153 1b. (523 kg.) 5,750 lb. (2,610 kg.) 135 m.p.h. (216 kro./hr.) 120 m.p.h. (192 km./hr.) 55 m.p.h. (88.5 km./hr.) 615n,/min. (188 m./min.) 5,500ft. (1,675 m.) 400 miles (845 km.) " Flight " photograph- In its latest retractable-uncarriage form—the Percival Q.6, which has a maximum speed of more than 200 m.p.h. on the Gipsy Six engines. (Above) Hardly in the transport class, but nevertheless a useful type for charter and feeder-line work—the PercivaJ Vega Gull. (Right) The Perci val Q.6 cabin as laid out for airline work. A toilet compart ment may be ar ranged in place of the seventh seat. " Flight " photographs. SHORT I N many ways the design and produc tion of the large series of "C" class boats for Imperial Airways by Short Brothers was one of the most remark able of post-war manufacturing achieve ments. The order was given, so to speak, off the drawing board, the first boat of the series made successful tests in July, 1936, and the initial order of thirty-one boats was completed some eighteen months later. In design the standard " C "-class'boat is a high-wing stressed-skin cantilever monoplane with a two-step hull of typi cal Short construction. The original series were fitted with Bristol Pegasus Xc engines with a. maximum output of 790 h.p., but the later series of strengthened boats have, been fitted with Bristol Perseus XIIc sleeve-valve engines. The latter have been designed for re fuelling and will be used both on the North Atlantic service and on that from Australia to New Zealand. The figures for the Trans-Tasman type of Empire boat are: \f alters : Pobjov Airmotors and Aircraft, Rochester Keiu. Ltd.. The landplane version of the Pcbjoy-Shsrt Scion Senior being demonstrated v»ith its two outboard engines throttled back.
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