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Aviation History
1959
1959 - 1676.PDF
12 June 1959 Above, Miles Student (top) and Edgar Percival Prospector. Right, Westland Westminster main directional lobe of the ground aerial are prevented from occurring. The transponder SSR.1251 is designed to I.C.A.O. recommendations.It is suitable for operation to an altitude of 20,000ft and automatically provides an air traffic controller with the position and flight informationof the aircraft in which it is installed up to a range of 250 n.m. SSR.1251 is a self-contained transponder meeting the requirementsof ARINC 404 for the \ A.T.R. long dimensions including extractor plate, rear plug and indexing pin arrangement.Cossor Radar and Electronics Ltd., Cossor House, Highbury Grove, London, N.S. C.T. (London) Ltd. (Stand No. 107B) On Stands 105B, 107B and109B this company will show, as agents, products of Sir George Godfrey and Partners Ltd., Murphy Radio Ltd. (Electronics Division), CossorRadar and Electronics Ltd., Mechanism Ltd., and W. Vinten Ltd., for details of which see under the respective companies.C.T. (London) Ltd., 27 Ashley Place, London, S.W.I. de Havilland Propellers Ltd. (Stand No. 69H) D.H. Propellers willbe showing a Firestreak infra-red homing guided missile and an lift propeller for the Gnome turboprop. The Firestreak forms the standard main armament of the Lightning,Javelin and Sea Vixen aircraft in service with the R.A.F. and the Royal Navy. Components are grouped in six main sections—the guidance,control and fusing systems, power supply, propulsion motor and war- head; all are housed within an aerodynamic body tube measuring10ft 6in in length and fitted with four small wings and four control fins. The infra-red homing system employs a detector eye which is sensitiveto the infra-red rays emitted by the target. Once it has locked on to the target the eye feeds information into the control system to ensurethat the weapon will intercept the target no matter what manoeuvre it may perform. The Firestreaks may be fired singly or in pairs at sub-sonic or supersonic speeds, and provision is made for jettisoning in an emergency. Ancillary equipment required in a parent aircraft has beendesigned and developed by de Havilland Propellers Ltd. in parallel with the main Firestreak project. In recent trials by the Royal Navy, using Sea Venom aircraft, 80 percent kills were recorded. The propeller for the Gnome is claimed to meet all the latest require-ments for modern turbine engines and contains a number of new operating and safety features. de Havilland Propellers Ltd., Hatfield, Herts. The de Havilland Engine Co. Ltd. (Stand No. 69H) On this standthere will be a Gyron Junior DGJ.l turbojet, a Gnome P. 1000 turbo- prop, and a Gnome helicopter engine. The Gyron Junior DGJ.l hasa static thrust of 7,000 1b. Units of this general type power the Blackburn NA.39 and incorporate in their design provision for air bleed for aero-dynamic-lift purposes. The Gnome P.1000 delivers 1,000 s.h.p. in its initial version and weighs only 555 lb dry. The more powerful P.1200version is specified for the new Breguet 941 military or civil STOL transport. The Gnome helicopter engine (1,000 s.h.p.) has a basicweight of only 275 lb. The unit displayed will be a standard production engine, scheduled for installation in a Westland Whirlwind. Gnomeengines are also specified for the new Agusta 101G helicopter and for an advanced version of the Saunders-Roe P.531. Particular interest will, of course, attach to the new P.1000 turboprop,which is a propeller-driving version of the Gnome H.I000 (DGe.l) turboshaft unit. The engine is of free-turbine type and comprises anaxial compressor, an annular combustion system, a high-pressure turbine driving the compressor, and a mechanically free low-pressure turbineproviding the high-speed output drive. The compressor and high- pressure turbine constitute the gas generator portion of the engine.High-speed reduction gearing, mounted adjacent to the exhaust duct, transmits the power turbine drive to an offset shaft mounted parallelwith the engine. This in turn drives into low-speed gearing at the front of the engine, providing the final reduction to the propeller. Thecasing for the offset shaft, together with the two gearboxes, constitutes the structural backbone to which the engine is attached.The de Havilland Engine Co., Ltd., Leavesden, Herts. Delaney Gallay Ltd. (Stand No. 127A) Delaney Gallay will beexhibiting examples of all their products, including primary and secondary surface oil-coolers, anti-icing heat exchangers, thermal insulation blanketsand ducting, stainless steel toilet units and examples of flux-bath brazing and stainless-steel fabrication. They will also be showing their new"Incorporall" portable welding kit for mild and stainless steels, a new welder for stainless steel that can operate when only one side of thejob is accessible, and a new universal welder that, with different attach- ments, is equally suitable for spot, seam or protection welding. Delaney Gallay Ltd., Vulcan Works, Edgware Road, London, N.W.2. The Dowry Group (Stand No. 45A) The Dowry Group are exhi-biting a wider variety of exhibits than on any previous occasion. This advance is partly the result of Rotol becoming a member of the Group.The Dowty Group now claims to be the largest manufacturer of aircraft components in Britain.The following companies of the Group are contributing to the Dowty stand: Dowty Equipment Ltd.; Dowty Fuel Systems Ltd.; DowtyNucleonics Ltd.; Rotol Ltd.; Dowry Seals Ltd. Overseas service for all the Group companies except Rotol is provided by Dowty Exports Ltd.,who will also be represented. Overseas service for Rotol customers in North America is provided by Rotol Incorporated, Arlington, U.S.A.Dowty equipment is fitted to two important French aircraft, the Dassault Mystere, for which electrical and hydraulic units totalling invalue almost half-a-million pounds have been supplied, and the Sud Caravelle, which is equipped with Dowty magnetic indicators. Rotolpropeller equipment, made in France by Louis Breguet, is used on the Nord Noratlas and the Breguet Alize.Two important units have now been added to the Dowty range, and will be exhibited. These are the Dowty Moog valve and the Rotolhydro-mechanical constant-speed drive. The Moog valve is an electro- hydraulic servo valve for control systems requiring electrical signallingto be converted into proportionate hydraulic movement of substantial force.The following list of exhibits to be shown indicates the variety of aircraft components now manufactured by the Group: Undercarriagesand nose wheels for Argosy, Friendship and Gnat, and for a modern supersonic intercepter fighter. Hydraulic equipment for aircraft andmissiles, including the new range of Dowty Moog servo-valves, Vardel and Super Vardel hydraulic pumps, and hydraulic motors. Typicalpropeller and propeller brake for gas turbine engines; propeller operating cylinder with pitch-lock mechanism; propeller controller unit, andfeathering pumps. Ram-air turbine for providing emergency power supply for essential flying controls and the 15 kVA turbo-alternator forsupplying current for electrical services. Fuel systems for gas turbine engines, notably the Gyron Junior. (Units include fuel pumps, spillnozzles and complete spill system.) Gearbox—one of four installed on the Vanguard to provide mounting faces for the various aircraft acces-sories, which are driven through gears and quills, the necessary engine power being transmitted by the gearbox drive. 40 kVA hydro-mechanicalconstant-speed drive. Two-cell fuel-flow proportioner, incorporating a hydraulic motor, enabling it to function as a line-booster pump as wellas a flow proportioner. A wide range of electrical equipment including Hermio, Dowmio, and Greasfil switches; two- and three-position mag-netic indicators; press-to-test indicators; undercarriage-position indica- tors; lever switches; single- and multi-push button switches; solenoids;drum switches; and commutator switches. Examples of Dowty sealing components in natural, synthetic and silicone rubbers, including stan-dard- and special-section seals, bonded seals, and moulded-rubber components. The Dowty Group Ltd., Cheltenham, Glos.
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