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Aviation History
1950
1950 - 1734.PDF
FLIGHT. 14 September 1950 AUXILIARY ASPECTS . .. Siebe, Gorman and Co., Ltd., Davis Road, Tolworth, Surbiton, Surrey (Stand 12) are perhaps the oldest-established safety engineers in the world, and are exhibiting various types of oxygen breathing apparatus, together with a complete oxygen circuit, portable oxy- gen equipment, ground-test equipment and an oxygen-charging trolley. Among the company's latest developments are a new lightweight oxygen line, and new designs of control valves, cylinder valves and regulators. Teddington Controls, Ltd., Cefn Coed, ' nr. Merthyr Tydfil, South Wales (Stand 84) are showing the latest development of their electronically operated cabin- temperature .controller. Whereas, in the , past, cabin temperature has been regu- lated according to the dry bulb tempera- ture readings, the new development, by the incorporation of a humidity element, enables the system to be controlled in relation to effective temperature and, by this means, ensures a greater degree of passenger comfort. Vokes, Ltd., Henley Park, Guildford, Surrey (Stand 46) are showing filtration and silencing equipment, designed especially for use in conjunction with cabin pressurization systems. Another exhibit is a tobacco-smoke remover for the promotion of added passenger com- fort. DE-ICING EQUIPMENT D. A. Daniel and Co., Ltd., Machynl- leth, N. Wales (Stand i^i) are included in this section because the Dragonfly surface combustion heaters which the company manufacture are equally as ap- plicable to de-icing purposes as to those of cabin heating. In that details of the company's exhibit s are given in the "Cabin Atmosphere Control" section, they need not be repeated here. Delaney Gallay, Ltd., Vulcan Works, Edgware Road, London, N.W.i (Stand 79) are showing their latest wing de-icing neater unit in the form of a light-alloy medium-temperature heat exchanger, utilizing exhaust gas as the heat source and air as the distribution medium. 'ery pistol and socket for Installation. Type ACR E8 air-cycle turbine coW-air unit by Sir George Godfrey and Partners. \ Delco-Remy-Hyatt. Ltd.. in, Gros-venor Road. London. S.W.i (Stand 88) show a series of fractional-horsepowermotors which are applicable to de-icing equipment. Joseph Lucas (Gas Turbine Equip- ment), Ltd., Birmingham, 28 (Stand 123) manufacture kerosene and petrol combustion heaters for application to thermal de-icing systems. Rotax, Ltd., Willesden Junction, Lon- don, N.W.10 (Stand 124) are exhibiting the electronic damper they have de- veloped, together with the associated pumps and valves, for application to pul- sating overshoe type de-icing systems. The damper gives automatic damping of the inflation cycle, according to light, medium or severe icing conditions, by the operation of a setting switch. T.K.S. (Aircraft De-icing), Ltd., Drayton House, Gordon Street, London, W.C.i (Stand 29) are exhibiting working models of their new porous-metal leading edge panel-type distributors, through which the de-icing fluid exudes. Photo- graphs taken during the B.E.A. de-icing trials at the beginning of the year are on view, and show the high order of oper- ating efficiency the system provides. Teddington Controls, Ltd., Cefn Coed, near Merthyr Tydfil. S. Wales (Stand 84) have developed, and are producing, a cyclic timing switch to effect the periodic energizing of individual air- screw-blade heater elements. In addi- tion, the company's well-known inching control has been found, in a modified form, to lend itself very well to de-icing applications. ELECTRIC ACTUATION 309 vices, automatic radio compasses and similar systems. The English Electric Co.. Ltd., Queens House, Kingsway, London. W.C.7. (Stand 85) exemplify their range of aircraft electrical equipment with six rotary actuators, six linear actuators, a screw-jack, five gearboxes, one gearbox" motor and compressor, a pilot's control, and a number of A.C. and D.C. motors, alternators and generators, varying froma 1 135 h.p. model up to a 16 h.p. A.C. unit. Complementing this display, the main English Electric stand (M) exhibits representative examples of wind-tunnel drives, electrical test plant for piston and turbine power units, and for engine auxiliaries, such as superchargers, com- pressors and so forth. Newton Brothers (Derby), Ltd., Alfreton Road, Derby (Stand 49) are ex- hibiting a variety of examples of their lightweight aircraft generators, with D.C., A.C. and dual-purpose outputs; patent automatic carbon-pile voltage or current regulators for the control of A.C. or D.C. generators, or as series regula- tors to give constant voltage from a vari- able source of supply; rotary trans- formers and convertors for supplying power for radio receivers or transmitters and electronic equipment; and high- frequency alternators. The Plessey Co.. Ltd., Ilford, Essex (Stand 86) have a large number of new units on their stand, including Cub, Puma, Cougar, Lynx and Cheetah elec- trical actuators; turbine starters, cart- ridge starters, including the Type "S" with modified breech; and a selection of new-type Breeze wiring accessories, in- cluding a concentric plug and socket, a heavy multi-terminal plug, a ground- starter connection, a 37-pin plug and socket and a Mk. 4 bulkhead connector. Rotax, Ltd., Willesden Junction, Lon- don, N.W.10 (Stand r24) have, within the past year, added many new items to their extensive range of aircraft elec- trical equipment. Of these, the high- energy ignition unit for gas turbines pro- duces two simultaneous independent sparks nearly 120 times a minute, the energy of each spark being approximately 100 times as powerful as that produced by booster-coil systems. Other new units are the double-shot turbo-starter, which has an output speed of over 8,000 r.p.m. at 100 lb ft torque, developing a maxi- mum of 155 h.p.; a lio-volt starter, similar to those used on the Hermes IV and V; a high-power linear actuator which, designed for no-volt operation, has a maximum working load of 26,500 1b, a 20-in stroke and a 10-second opera- The British Thomson-Houston Co., Ltd., Rugby (Stand ir7) are world- famous in the electrical field, and pro- duce a wide range of aircraft equipment. On the company's stand may be seen representative examples of their turbo- starters, magnetos, booster coils, A.C. and D.C. motors and generators, actu- ators, switches, circuit-ibreakers, elec- tronic voltage regulators, together with an electronic tester for multi-cylinder engines. Delco-Remy-Hyatt, Ltd., in, Gros- venor Road, London, S.W.i (Stand 88) show a range of fractional-horsepower motors in four basic frame sizes, from 2jin to 4in diameter, which are available as series, shunt or compound types. In the same frame sizes, the company have developed a range of split-field motors for electronic control for follower de- Miles Electric actuator Type Ei 3,000 Mk I Western Manufacturing Estate).
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