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Aviation History
1954
1954 - 2442.PDF
3 September 1954 Power piaradeHavillaml Gipsy Major Span . - • - 34ft *"» Length 25ft 5in Max. speed 138 m.p.h. Gross weight 2,100 lb DE HAVILLAND CHIPMUNK As pretty as it is practical, the Chipmunk is now used for civil or military flying instruction in twenty countries. Though designed by de Havilland Aircraft of Canada, Ltd., it passed into full production in Great Britain, where it is now offered in two forms—Mk 20 (military) and Mk 21 (civil). The version serving with the R.A.F. is designated Chipmunk T.10 and, like the Mk 20, this is powered by the Gipsy Major 8 engine, whereas the Mk 21 has the Gipsy Major 10 Mk 2. In no aspect of its lively performance is the Chipmunk more outstanding than in its aerobatic ability. Thus, all standard manoeuvres, such as stall turns, slow rolls, half rolls, hesitation rolls, loops, and rolls off the top of loops are performed smoothly and effortlessly. Rolls are possible at the recommended cruising speed in level flight, and loops require an increase of only 8 or 9 knots. Flown solo, the Chipmunk will gain 500ft in a "roll-off." The structure is all metal, and the enclosure over the tandem cockpits is reinforced for the protection of the pilot and pupil in the event of the machine overturning. By reason of the wide-track under carriage, there is little tendency to swing on take-off, even when throttle is opened too quickly. Controls for the single-disc differential brakes are duplicated in both cockpits, and sliding amber screens, for use with blue goggles, are provided for blind-flying training. .. Four Rolls-Royce Avon 903 Span 115ft Length 96f Typical cruising speed .. 500 m,p.h. Gross weight .. .. 120,000 lb DE HAVILLAND COMET 2 The de Havilland company looks forward eagerly to the opportunities which the S.B.A.C. Exhibition will afford for discussion of the Comet outlook as a whole. Meanwhile, it reports rapid and heartening progress in the investiga tion of the accidents to the Comet 1, and confidently expects that the new Comet versions for medium and long stages—the Comet 2 and 3—will both be flying in the display. "Besides being the first, and still the only, jet airliner in the world at a time when the changeover to jet propulsion for first-class travel is called for," a recent statement runs, "the Comet now bids fair to be by far the most exhaustively tested airliner in existence. Out of the troubles good is emerging. Comets have now been flying more than five years, and two major steps of development have been made with these aircraft. . . The value of the accrued experience, unique to the Comet, is enormous, and there is no short cut to this kind of knowledge." Whereas the Comet I and 1A were built to carry 3r> 40 passengers and weighed, respectively, 107,000 lb and 115,000 lb, the Comet 2 will take 44 first-class passengers in its longer fuselage, and weighs 120,000 lb. Its power plant is four Rolls-Royce Avon 503 turbo jets, which allow stage lengths of 1,750-2,200 miles. Capacity payload is 13,000 lb. More than 30 Comet 2s have been ordered—by B.O.A.C., Canadian Pacific Airlines, Linea Aeropostal Venezolana, Panair do Brasil, Japan Air Lines, U.A.T. and Air France.
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