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Aviation History
1947
1947 - 1475.PDF
SEPTEMBER 4TH, 1947 FLIGHT 245 they wilt see new and improved Ser- vict" aircraft such as the Westland Wvvern, Blackburn Firecrest. Saunders-Roe A.I., Vickers Valetta and Heston A.O.P., as well as new elementary and advanced trainers. Outstanding among the year's new power units are the Napier Naiad air- screw turbine, described elsewhere in this issue, and the Rolls-Royce Eagle piston engine,which will be seen in the Wyvern. Makers of aircraft components, special equipment and accessories may not be able to display their pro- ducts in such a spectacular manner as the aircraft constructors but they will nevertheless be present in force in the static section of the exhibition, and there is no doubt that advances in this most important branch of the aircraft industry have been, if any- thing, of greater importance and promise than many of the aircraft themselves. Special Equipment Many types and sizes of airscrew will be seen and the majority of them demonstrated. Examples of new special equipment worthy of particu- lar attention are the Smiths electric autopilot operating on the rate as opposed to the displacement principle ; the G.E.C. small two-way radio for light aircraft and the same company's hot-air oven for the galleys of larger aircraft; the Decca Navigator Company's new airborne receiver and lane identification unit (the last named will be demonstrated); and Marconi's automatic radio compass. Almost innumerable examples // fromp HERTFORD Mile* A " Fli-ght " Copyright map showing the main approaches to Radlett airfield. of other equipment, from the Martin-Baker eject«jS?at to the Tharra buried rivet could hzg&entkgfS&T MORE ABOUT THE M-B V E of the finest all-round singfc-seat piston-engined fighters ever produced in this, or any other, country is the Martin-Baker M-B V, to Air Ministry specification F.18/39. This exceptionally clean low-wing monoplane, powered by a Rolls-Royce Griffon 83 engine driving a six- blade contra-rotating airscrew, was described and illustrated in Flight of November 29th, 1945, since which time full particulars of performance and of certain constructional features have become available. The maximum level speed of the M-B V is 460 m.p.h. at 20,000ft, even at as low an altitude as 6,000ft the speed is ** m.p.h. With normal fuel (200 gallons) the range is I.IOO miles. Other data are: time to 20,000ft, 6.5 min.; time to 34,000ft., T5 min.; service ceiling, 40,000ft; take-off distance (over 50ft, calm), 420 yards; landing distance (over 50ft, calm), 550 yards. Readers who were fortunate enough to see S/L. Zurakowski's demonstration at Farnborough FORTHCOMING EVENTS Aug. 28th to Sept. 13th.—Engineering and Marine exhibition. Olympie, London. Sept. 3rd to 6th.—Royal Aeronautical Society : Aeronautical Congress. Sept. 6th.—Naval Aviation : Air display and static exhibition. Lossie- mouth air station, Moray, Scotland. Sept. 6th.—Air display at R.N.A.S. Yeovilton. Sept. 9th.—Royal Aeronautical Society : Dinner at the Guildhall, London. Sept. 9th to 12th.—S.B.A.C. Exhibition and Display. Sept. 13th to 15th.—Cannes Aero Club " Ailes d'Aiur " Film Festival air rally. Cannes-Mandelieu airfield. Sept. 14th.—Royal Aeronautical Society : Garden party, Radlett airfield. Sept. >7th to V9th.—Federation Aeronautique Internationale : Annual General Conference, Geneva. The clean aerodynamic design of the M-B V is reflected in its speed of 460 m.p.h. during 1946 will feel certain that the stalling speed, with flaps and undercarriage do-vn, is no more than the 95 m.p.h. claimed. Some illuminating extracts from the Engineering and Maintenance Appraisal drawn up by the Aircraft and Arma- ment Experimental Establishment at Boscombe Down in March last year may now be quoted. It is considered, states the Teport that the general design and layout of the M-B V is excellent and is infinitely better—from the engineering and maintenance aspect—than any other similar type of aircraft. It is further considered that the layout of the cockpit might very well be made a standard for normal piston-engined fighters, and that the engine installation might be applied advantageously to other aircraft.
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