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Aviation History
1953
1953 - 1146.PDF
.-..• MMp Perci M Jet Provost DURING March this year it was announced by the Under- Secretary of State for Air that the Air Ministry wished to consider the advisability of introducing a jet trainer into the R.A.F. at the basic stage, so that pupils could carry out the whole of their training on jet aircraft. Such a major change could not, he said, be decided on purely theoretical arguments, and the Government would make thorough practical trials within the training organization of the R.A.F. Later it was disclosed that an order had been placed with Percival Aircraft, Ltd., for a number of side-by-side two-seater jet trainers adapted from the Percival Provost T.l and depicted in model form at Farnborough last year. The Jet Provost differs from its precursor essentially in being powered by an Armstrong Siddeley Viper 2 turbojet, for which air intakes are positioned on the fuselage sides in way of the cockpit enclosure. The main under carriage is of the nosewheel type and has been made retractable. A Naval deck-landing version is also in mind. BRITISH AIRCRAFT 1953 0 0 3 Power planl Armstrong Siddeley Viper 2 Span . . . .. 35ft 2in m •» mum Smuttier s-Hoe Prineesft ALTHOUGH this 150-ton flying-boat has been flying since August 22nd last year, her two sister ships have been cocooned, and the future of the entire Princess project remains in the balance. Successive plans for operating the Princesses on B.O.A.C.'s routes and as R.A.F. troopers have been shelved, although the Minister of Supply recently agreed with a Parliamentary questioner that "it would be a tragedy if all the work which has gone into this project came to nothing." With capacity for 200 troops in the double-bubble fuselage, and a range of 3,500 miles, the Princess is claimed to be capable of carrying in one year as many troops as three ordinary troopships on strategic routes. The Princess is powered by ten Proteus turboprops—four coupled pairs and two single units outboard, giving her an estimated cruising speed of 380 m.p.h. Retractable wing-tip floats and powered controls are two im portant features. Four integral fuel tanks between the engine units carry a total of 14,500 gal of kerosine. Power plant 10 Bristol Proteus 705 Span . . . 219ft 6in Length 148ft Gross weight .. . 330,000 lb Max. cruising speed 380 m.p.h- 3 5 SB
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