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Aviation History
1962
1962 - 0658.PDF
656 DEUTSCHE LUFTFAHRTSCHAU 1962... research and development have been devoted to heat-treatable titanium alloys which can be formed in the soft solution-treated condition and subsequently aged to achieve higher strengths, and to other alloys which have good creep resistance and offer a useful extension to the temperature range in which titanium can be used. Lucas Gas Turbine Equipment Ltd The theme of the main display is sets of units covering fuel-system and combustion equipment available for typical aircraft applications. Of special interest is a low-pressure boost system, including hydraulic and electrical- driven boost pumps, a range of gear pumps, hydraulic pumps and motors, and quick-release couplings. One fuel system is an integrated system for a helicopter applica tion. It is compact and light (151b) and has been designed for use with an electrical computer for throttle control. It comprises a fuel pump with hydro-mechanical and overspeed governors, a simple flow control, rotary throttle valve (with idling by-pass), rotary double-acting shut-off cock, an emergency overspeed trip governor (which comes into operation in the event of the turbine "running away") and sprayers. Other systems shown include equipment for a two-shaft turboprop engine and a single shaft turbojet, the latter including a supplementary emergency system. In the equipment shown for low-pressure boost systems are two boost pumps, one a hydraulically driven double-ended unit, the other electrically driven. The double-ended unit supplies low- pressure fuel from the aircraft tanks to the engine main high- pressure fuel pumps at sufficient pressure to prevent cavitation within the pumps under all flight conditions. Combustion equipment includes an air distributor unit, designed to overcome the effect of radial variations and non-uniformity in compressor discharge air distribution on the performance of a tubo- annular or annular combustion chamber. Equipment for purging aircraft fuel tanks as a protection from fire is represented by inert-gas generating plant. The exhaust products of a miniature combustion chamber burning aircraft fuel in an air supply bled from the engine compressor are cooled and dried, and the resulting inert gas generated during flight gives continuous purging of the fuel tanks which may at the same time be pressurized to reduce fuel losses or transfer fuel. Other exhibits comprise a selection of combustion chambers, flame tubes, bellows and an Avon Caravelle thrust-reverser unit. General equipment includes hydraulic motors and pumps used in hydraulic drives as constant-speed drives for aircraft alternators and both constant- and variable-speed drives for aircraft fuel-boost pumps. In one application the hydraulic motor driving an alternator draws high-pressure fluid from a remotely situated pump. The Normalair two-speed cabin air compressor developed for Transall C.I60 FLIGHT International, 26 April 1962 Rolls-Royce proposal for VTOLISTOL tactical transport. Inset shews alternative pod with ten fan-lift engines instead of sixteen jet-lift engines motor has its own governor and other devices for achieving a constant speed; the pump may also power other components. Among the range of hydraulic pumps and motors available for aircraft hydraulic systems is a small type P. 1 unit having a maximum available displacement of 25 g.p.h. at a rated speed of 25,000 r.p.m. and pressure of 3,000 p.s.i. Martin-Baker Aircraft Co Ltd Martin-Baker are exhibiting in conjunction with the German firm of Autoflug. On the stand will be two of the new rocket-assisted ejection seats: a Mk GY6, which is an installation suitable for the F-84F, and a Mk GA6, which is for a German VTOL project. In addition there will be an installation of a seat in a mock-up cockpit. On May 3 a demonstration will be given of a dummy ejection with the new rocket seat. This will take place from the back of a lorry, as at Farnborough last year. Normalair Ltd This company has supplied equipment for every British-built military and civil pressurized aircraft, as well as for many other types manufactured by countries in all parts of the world. The company's exhibition stand at Hanover this year has been designed to emphasize the ability to design, develop and manufacture complete, integrated, pressurization, air-condition ing and oxygen breathing systems for all classes of civil and military aircraft. Normalair claims to be the only organization in Europe able to offer this comprehensive service. The necessary research and development facilities required to test equipment of this type under all operating conditions are housed in the company's high- altitude research laboratory, the largest of its kind in Europe. Displayed on the Normalair stand will be a range of air-condi tioning, pressurization and oxygen-breathing systems and compo nents, set against a background of large photographic murals depicting various features of the Normalair £lm high-altitude research laboratory. The major exhibit will be a three-dimensional reconstruction of the pressurization and air-conditioning systems being supplied for the Transall C.160. This display system will constitute a condensed version of the aircraft installation and will incorporate actual items of equipment. Prominent among the units which form a part of the C.160 pressurization and air condi tioning systems is the fully automatic, two-speed cabin air compres sor, developed specifically for this application. The unit is completely self-contained and incorporates a fully automatic gearbox together with built-in air flow and surge controls and a pump- driven oil circuit for lubrication and to supply power for the con trols. Two of these compressor units are installed in the aircraft, each having a capacity of 301b of air per minute at altitudes up to 30,000ft. System diagrams on display will show typical Normalair pres surization, air-conditioning and oxygen breathing installations for fighter aircraft and jet-powered executive machines. A com prehensive range of liquid-oxygen converters and cooling turbines will also be on view, together with representative items of flow, pressure and temperature control equipment.
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