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Aviation History
1939
1939 - 1220.PDF
APRIL 27, 1939 FLIGHT. 417 The first really large machine to be built by De Havillands, the D.H.91, or Albatross, is the most efficient machine of its size in existence. At 62 per cent, of the maximum available power—or 1,300 h.p.—the Albatross carries a pay- load of 4,188 lb. at 210 m.p.h. It is, in fact, at present operating the fastest scheduled commercial service in the world—though, since it is essentially a long-range machine, it is at present being somewhat wasted on the Paris run. WIRELESS OPERATOR PILOTS DOOR LUGGAGE COMPARTMENT STEWARD'S \ / "*ALLEY FORWARD * INTERMEDIATE CABINS 8 PASSENG6RS EACH REAR CABIN 6 PASSENGERS PASSENGERS' DOOP. COMPARTMENT The Lavatory seating layout of the D.H. Albatross as arranged Imperial Airways' European services. for 13*11" Two of the four standard seating arrangements for the D.H. Rapide. That above is for short-distance work. The structure is entirely of wood, with interesting applications of new ideas, and the whole design may be said to have been based on that of the smaller Comet racer. The thin-section cantilever wing is of two-spar design with spruce-strip covering, and the fuselage is a monocoque structure in which a balsa wood sandwich is used to support the plywood. The engines are Gipsy Twelves, each giving a maximum of 525 h.p. at the take-off. The figures (centre column) are for the passenger-carrying version. lavatory and/or Lu$a$t Span Length (tail down) ... Wing area Power loading Wing loading Weight empty (with equipment) .. Payload (1.000 - mile range) Cruising cpeed (11,000 ft.) Max. speed (8,750ft.) .. Take-off run (5 m.p.h. wind) Initial rate of climb... Service ceiling Absolute ceiling (two engines on one side stopped) Four different pass enger arrangements are offered for the D.H. Flamingo — depending on the type of work it is expected to carry out. 105ft. (32 m.) 70ft. (21.34 m.) 1,078 sq. ft. (100.15 sq. m.) 13.91b./h.p. (6.40 kg.,'h.p.) 27.4 Ib./sq.ft.(133.77 kg.sq.m.) 21,230 lb. (9,642 kg.) 4,188 lb. (1,899 kg.) 210 m.p.h. (338 km. hr.) 225 m.p.h. (302 km./hr.) 385 vd. (352 m.) l,018ft./min. (5.17 m./sec.) 17,900ft. (5,455 m.) Designed for use by smaller operators or on branch-line services, the D.H.89, or Rapide, has a reputation for economy in a somewhat different sphere. In spite of the fact that this twin-engined all- wood biplane is perhaps somewhat old- fashioned according to present ideas, it is still being manufactured in considerable numbers for use on airlines throughout the world. That is proof of its practic ability. The engines are Gipsy Sixes of 200 h.p. Span ... Length Wing area ... Weight empty (inc. equip.) Disposable load All-up weight" Maximum speed ... Cruising speed Take-08 run Initial rate of climb Ceiling Ceiling (one engine) Range 48ft. (14.63 m.) 34ft. 6in. (10.52 m.) 336 sq. ft. (31.2 sq. m.) 3,230 lb. (1,466 kg.) 2.290 lb. (1,040 kg.) 5,5501b. (2,520 kg.) 155 m.p.h. (250 km./hr.) 132 m.p.h. (212.5 km. hr.) 290 yd. (265 m.) 867ft. min. (265 m./min.) 16,700ft. (5,100 m.) 3,100ft. (945 m.) 556 miles (895 km.) 5,000ft. (1,524 m.) Malters ; The Dt Havilland Aircraft QQ„ Ltd., Hatfield Aerjiroms, Hens. FAIREY ONE of the most interesting commer cial machines in course of construc tion is the Fairey F.C.i, fourteen of which have been ordered by the Air Ministry. This four-engined all-metal landplane has been designed very largely to the requirements of British Airways, and in the latter's operational depart ment work has recently been going on in the design of the instruments and navi gational equipment. Special high-lift flaps of Fairey design will be fitted to bring the effective take-off wing loading down to about 25 lb. per sq. ft. ; when the flap or auxiliary wing is retracted this loading will be increased to 32 lb. per sq. ft. The machine will have a retractable The Fairey F.C.r four-engined transport aeroplane ; it is expected to cruise at 220 m.p.h.
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