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Aviation History
1957
1957 - 0695.PDF
FLIGHT, 24 May 1957 SHOWING THE FLAG THIS is a guide to Britain's participation at the 22ndParis Salon, principally in respect of aircraft, power-plants and miscellaneous aeronautical products. During the final week-end of the show the aerobatic team of No. Ill Squadron, Royal Air Force, mounted on five Hawker Hunters, will be putting on a performance, led by S/L. R. L. Topp. A Vickers-Armstrongs Valiant four-jet bomber of No. 138 Squadron, R.A.F., will be demonstrated by W/C. R. G. W. Oakley. As this is written it seems possible that twelve Canberras of the 2nd Tactical Air Force will fly past, and that a Comet will bring V.I.P.s and be exhibited. 701 —for Britain at the 22nd Paris Salon Aero Research (Stand No. 100). The main purpose of the AeroResearch display will be to show the versatility of Redux bonding in aircraft construction. For some years Redux has been widely used bothfor simple skin-to-stringer bonding and for more complex work, and new applications appear to be almost unlimited. A recent example isseen in the laminated sheets bonded together to form stiffening booms in the spars of the Fokker Friendship; and the Redux process is wellsuited to the application of stiffening and doubler plates. It is some- times forgotten that Redux bonds to wood, as well as to metal, but thiswas one of the earliest applications of the techniques. By the same token it can be used to bond friction linings, and examples of thisapplication will be shown at the Salon. An efficient approach to the problems of providing light but stablestructures for aircraft is to make use of sandwich construction of very low density. An excellent way of doing so is to use an expanded-metalhoneycomb for the filling medium—an expedient that was practically impossible until Redux bonding could be used to cement the structure.The advantages of this form of construction will be demonstrated on the stand by a typical section of fuselage. Bonded load-bearing structures (also subject to recent development) will be demonstrated. As an exampleof the other adhesives made by Aero Research, some specially suited for high temperatures will be on display. Aero Research, Ltd., Duxford,Cambridge. Alvis (Stand No. 25). Three types of engine will be shown byAlvis: the Leonides Major as installed in the Handley Page Herald, the Leonides Major helicopter powerplant for the Westland Whirlwind,and the standard Leonides as used in many countries and particularly by the R.A.F. in the Hunting Percival Pembroke and Provost and byScottish Aviation's Pioneer and Twin Pioneer The first of these engines, the twin-row 14-cylinder radial LeonidesMajor, is now rated at 875 b.h.p. It is supercharged by means of a single speed, single-stage blower driven through gears from the crank-shaft. Fuel is supplied to the eye of the supercharger impeller through a fuel-injection carburettor, enabling a single-lever system of enginecontrol to be employed. The propeller shaft is driven through satellite pinions which give a reduction ratio of 0.533 to 1. For the Herald a veryclose and well baffled petal cowling has been provided. The helicopter With their Hunters painted glossy black, the aerobatic team of No. Ill Sqn., R.A.F., will be conspicuous in the displays on June 1 and 2.
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