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Aviation History
1952
1952 - 1385.PDF
16 May 1952 ^5 the Viscount engine, and the DC-3 in France with a Palas auxiliary turbojet attached to the belly. A pressurized DC-3 has been delivered by Scottish Aviation to Bharat Airways, and the Super DC-3, described below, is available to extend the life of aircraft at present in service. Most DC-3S in service are Twin Wasp powered; usual seating is for 21 passengers. Span, 95ft; length, 64ft 6in; wing area, 987 sq ft; empty weight (approx.) 16,800 lb; gross weight (C.A.A.), 25,200 lb; typical perform ance: 1,500 mile range at 190 m.p.h. with a payload of 6,500 lb. Douglas Super DC-3. This conversion is so extensive that it involves return of the aircraft to the Douglas company; cost would also appear to have prevented it from becoming popular. Apart from R4D-8S for the U.S. Navy, the type is unlikely to be seen in large numbers, Capital Airlines, we believe, being the only domestic U.S. users. Span, 90ft; length, 67ft 8±in; gross weight, 31,000 lb. Typical per formance: range of 1,400 miles at 240 m.p.h. at io,oooft with 7,000'lb payload. Lockheed Electra. The model 10 Electra dates from 1935; a few are still in use, with L.A.N. (Chile), N.Z.N.A.C. (N.Z.), South Coast and MacRobertson-Miller Airways (both Australia), and VARIG and DETA (Brazil and Portuguese East Africa). Lockheed 12. A faster and slightly smaller Electra, the "twelve" is used by Pacific Northern Airlines (Alaska) and other small operators. Wasp Juniors provide the power as on the Electra. Lockheed 14. Although of pre-war design, many "14s" are now converted Hudson bombers. Variously powered by Twin Wasp, Hornet, and Cyclone radials, they usually carry about 14 passengers at a good cruising speed; typical operators are East- West Airlines (Australia) and Canadian Pacific Air Lines. Lockheed Lodestar. Faster than any of its contemporaries, this forebear of the Constellation is in service in all continents, and there is not yet available any cheap replacement with a matching performance. Subject to the same power-plant variation as is the model 14, the type is particularly well known with E.A.A.C., C.P.A.L , and National Airlines. Span, 65ft 6in; length, 49ft loin; wing area, 551 sq ft; weight empty, 12,0751b; gross weight, 18,500 lb. Typical performance: range 1,300 miles at 220 m.p.h. with payload of 4,500 lb. Martin 2-O-2. First post-war transport to be certificated in the U.S.A. (August, 1947), the 2-O-2 would appear to owe little to any previous design, but to be a bold attempt at a DC-3 replace ment. Powered by two CA-18 series Double Wasps, the Martin is unpressurized. The 36 or 40 passengers enter via a power- operated rear loading ramp; double-slotted flaps are fitted, as are reversing airscrews. Equipment is typical of modern airliner practice. Total production was 31, of which 25 originally went to N.W.A.; California Central and two South American operators use the 2-O-2, as well as Trans-Ocean and Japan Air Lines. There is also a re-engined version (series CB-16 engines) desig nated 2-O-2A, a number of which went to T.W.A. Span, 93ft 3in; length, 71ft 4m; wing area, 867 sq ft; weight empty, 26,930 lb.; gross weight, 39,900 lb. Typical performance: range 700 miles at 237 m.p.h. at 12,000ft with payload of 10,520 lb. Martin 4-O-4. Basically a pressurized 2-O-2, large numbers of this transport are in service, chiefly with E.A.L. (as Silver Falcons) and T.W.A. Data everywhere shows a slight improvement on the 2-O-2, the operating performance being exhaustively analysed elsewhere in this issue. Span, 93ft 3in; length, 74ft 7in; weight empty, 27,799 lb; gross weight, 42,750 lb; typical performance, range 900 miles at 255 m.p.h. at 18,000ft with 9,500 lb payload. UNDER 12,500 lb Airspeed Consul. Starting life as a converted Oxford, most Consuls were built in 1946 and 1947 as civil types right from the start—thus the wheel has turned the familiar full circle, the Oxford having been a military trainer version of the pre-war civil Envoy. (Turning the wheel yet further we find there is now a military Consul!) Usual power plants are 395 h.p. Cheetah 10s. Span, 53ft 4in; length, 35ft 4in; weight empty, 6,047 lb; gross weight, Approximately 330 Doves are in use; this one is Burmese. This Brazilian Prince typifies the world-wide demand for the aircraft. Gibraltar Airways (an associate of B.E.A.) operate this D.H.89A Rapide. The big Leon ides-powered Pioneer here shows its slots and flaps. Quite large numbers ofSealands are beginning to be exported. Both Westland-Sikorsky S-51 (below) and S-55 (left) are available to sterling-area purchasers; tooling-up for the S-55 is proceeding apace.
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