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Aviation History
1953
1953 - 1547.PDF
FLIGHT, 27 November 1953 701 DE HAVILLAND VARIETY: De Havilland Canada, having alrtady delivered several hundred beavers—mostly to the U.S.A.F. and U.S. Army—are continuing production of this most successful machine. This floatplane belongs to the Sangyo Keizai Press of Osaka. It is taking off just outside that city. D.H. Australia are now delivering Vampire Trainers, one of which is seen below. Great Britain A.S.T. Target Glider. Designated C.4, the "swept delta" target developed by Air Service Training's aircraft division is capable of being towed at high Mach numbers. Equipped with a firing-error meter and a radar transponder, it is de signed for towing behind any of the latest military types. A sketch on this page shows the self-trimming linkage; as speed in creases, the drag of the flat plate overcomes a spring and moves the central elevator down, so making the target more nose- down in flight. Hawker Hunter. According to our American contemporary Aviation Week, Hawkers have almost completed a Hunter prototype with 50 degrees sweep and a 10,000-lb thrust RA.14. But, says the American journal, "the project has been shelved by the M.o.S." Another report from America announces that the Danish government are negotiating for a number of Hunters, and the sum mentioned is $14,450,000 including spares. No doubt this order (assuming the report is correct) was confirmed after Neville Duke's little-publicized demonstration at Copenhagen (Flight, October 30th, p. 582). Fighter Command. A new camouflage scheme has just been approved for day fighter aircraft based in the United King dom. The upper surfaces will be dark green and dark sea grey (a& are all-weather fighters and aircraft of the 2nd A.T.A.F.) while the underside will be silver. It is thought unlikely that every Meteor F.8 will immediately be repainted, but the new uniform will certainly apply to Swifts and Hunters as they are issued to the Service. United States Boeing B-47 Development. During the past four years Boeing have been studying a variety of revised B-47 layouts, princi pally aimed at increasing range. Two projects have actually been built and, after much delay, both should fly next-year. The AIRCRAFT INTELLIGENCE XB-47C is powered by four big Allison J71 turbojets in single pods. (These pods are exceptionally neat and they are used in some varieties of twin-engined Douglas B-56.) The XB-47C has been virtually complete for some time but development is unlikely to proceed. The XB-47D retains the original J47 turbojets in the outboard positions but, in place of the inner paired units, single Wright T49 turboprops will be installed. These are big single-shaft engines developed from the Sapphire to give about 9,000 s.h.p. A single airscrew, with very wide blades, will be used on each T49. France S.2J.4050 Vautour. During the official trials of the first prototype, now completed, a considerable number of pilots handled the aircraft and many senior staff officers were given a taste of transonic flight. The second machine is ready to fly; it has a new single-seat cockpit and a dorsal spine similar to that of the Mystere IV and Hunter. The radio aerial, formerly built around the canopy, Sabre fashion, has now been moved into this spine. The Sap phire-Vautour is also fast being readied, and a later prototype will be powered by two of the big French Vulcain turbojets. Standard Atar-Vautours are already going into full production for the French Air Force. Leduc Developments. Professor Rene Leduc has revealed some details of his latest projects. The Leduc 021 is a sub sonic test-vehicle carrying 630 gallons of fuel and, like all present Leduc ramjet aircraft, it is intended solely as a test-bed for the power plant. At low altitudes the climb will be made at Mach 0.84, with a rate of climb of 40,000ft/min. Even at 45,000ft the climb will still be some 4,000-5,000 ft/min. The Leduc 022 will, on the contrary, be fined with swept-back wings and will be designed for a Mach number of 2. With a thrust of no less than 60 tons (probably metric units of 2,205 lb) the maximum fuel flow will be 11,000 gal/hr; all this will be handled by a pump weighing 20 lb. TIP AND TARGET: The Percival Prince Series 5 and Pembroke operate at increased all-up weight of 13,000 lb. To meet the load, the original Prince wing has been strengthened, and an additional section has been added outboard of the ailerons (right). The camber is note worthy. The A.S.T. C.4 target (left) is discussed on this page.
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