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Aviation History
1937
1937 - 1735.PDF
JUNE 24, IQ37- FLIGHT. 651 A sectional view of a De Havilland c.-s. airscrew hub, showing the central operating cylinder, the control unit, and other details. working parts will be shown, from which can be seen the principles of operation of this system, which is intended to provide an easily installed and compact layout; constant-speed airscrew control, developed in conjunction with the De Havilland Co.; and, lastly, a demonstration set of equip ment mounted in a mock-up fuselage and centre section. Many of these Lockheed specialities will be sectioned. Makers: Automotive Products Co., Ltd.. Leamington Spa. PALMER (Stand 43).— At the time of going to press no details of this exhibit are available. It can be assumed, however, that these pioneer tyre manufacturers will dis play examples of their wide range of aero tyres, electrically conductive tail wheels, and aircraft wheel brakes. Makers: The Paltrier Tyre, Ltd., Thames House, Millbank, London, S.W.J. TURNER'S (Stand 28).—Five principal items will be: (1) Pneumatic landing legs, working solely on compressed air with only a small amount of oil for lubrication pur poses. The design permits of very light weight structures. (2) Oleo-pneumatic land ing legs, designed lor heavier aircraft where the variation in weight between the light and laden condition is considerable. The design allows for taxying on air, landing energy being taken on oil. (3) A hand- operated air pump for filling pneumatic devices with air up to 1,200 lb. pressure. (4) Oil injectors for injecting oil against any air pressure. (5) Turner-Romec pumps, manufactured in this country on an Ameri can licence. A very wide range of pumps is available not only for fuel supply but also of the vacuum type for operating instru ments, de-icing, undercarriage retraction, gun synchronising, etc. Makers: Turner's Motor Mfg. Co.. Ltd.. Moorfield Road, Wolverhampton. VICKERS (AVIATION), LTD.—See under Components. Instruments and Controls EXACTOR (Stand n).—This firm will be exhibiting their hydraulic control in its standard form, arranged with interconnec tion between throttle and mixture controls in order to comply with modern engine re quirements. This has been done under licence from, and in conjunction with, H. M. Hobson. The exhibit will also demonstrate alternative positions for the first and second pilots' control, and includes in the first pilot's battery a hydraulic control for the operation of a retractable landing lamp. The company will be introducing at this exhibi tion lor the first time its mechanical con trol. This has been designed to meet the requirements of light duty operation over short distances in small- and medium-sized aircraft. It incorporates the Exactor spring mechanism, which is contained in two units mounted at either end of the system and is used to maintain a constant tension on the single wire which is the only connecting medium. The company's remote priming equipment will also be shown, this consist ing of a priming unit situated on the engine and hydraulically operated from the cock pit. Makers: Exactor Control Co., Ltd.. Exactor Works, Mount Pleasant, Alperlon. Middlesex. FERRANT1 (Stand 60) — Examples of aircraft instruments of designs recently ap proved by the Air Ministry will be shown by this firm, including engine speed and air speed indicators, fuel pressure gauges, fore and aft levels, compasses and engine cylin der thermometers. In addition, there will be various small instruments of the types used on radio transmitters and receivers, as well as various high-grade electrical testing in struments. There will also be a selection of valves, condensers and small castings repre sentative of the company's general work. Makers: Ferranti, Ltd., Hollinwood, Lanes. HUGHES (Stand 94).—The most im portant exhibit on this stand will be the Smith automatic pilot. The use of such equipment is extending very rapidly and it is already being manufactured under licence in Fiance. In addition to the automatic pilot, there will be the new Holmes teie- compass with repeater dials on show, as well as a comprehensive range of navigation instruments, including sextants, slide-rules, bombsights, course and wind calculators, and a full range of Husun compasses. Agents: Smiths Aircraft Instruments, Cricklewood Works, London, N.W.2. KELVIN (Stand 52)- — *• number of new instruments will be shown by Kelvin, Bottomley & Baird. The first of these is the K B B.-Martin colour vision lantern for test ing the colour vision of pilots and others. Then there will be a boost gauge employing an indirect svstem of transmission, whereby any possibility of oil and petrol vapour reaching the operating mechanism is elimin ated More important still, an electrically heated pitot head which embodies an elec tric heater thermally integral with the outer casing of the nozzle will also be seen. Th<r heater is thermostatically self-regulated. Finally, there will be aircraft compasses, petrol gauges, electrical r.p.m. indicators (employing a three-phase synchronous trans mission system), and the recently intro duced K.B.B.-Kollsman sensitive altimeter. Makers: Kelvin, Bottomley and Baird. Ltd.. 303, Shell-Mex House, Strand, London. W.C.2. P.B. (Stand 31).—Apart from a sectioned model of the Deviator, a simple blind-aying instrument of the stabilised gyroscope type which has been in action for a number of years, this company will be exhibiting a sectioned model of an automatic directional control as well as the actual apparatus used for rudder and elevator operation. The lat ter will be a working model so that its response to movement may be properly demonstrated. Installation drawings and survey photographs taken with the help of the automatic control will also be shown. Ease of maintenance and general simplicity are features of this equipment. On the aero drome an Air Dispatch Dragon will be seen with the P.B. automatic control arranged for air survey work. Makers: P.B. Deviator, Ltd., 42A, Syden- ham Road. Croydon, Surrey. SHORT AND MASON (Stand 6).—This well-known firm of instrument makers will be showing complete aircraft instrument panels, for military and civil types, with altimeters, air-speed indicators, revolution indicators, boost gauges, oil and fuel gauges, oil pressure gauges, radiator and oil temperature thermometers. In addition, there will be altigraphs, both of the service and portable types, air-speed recorders, air temperature strut thermometers. Brown turn indicators and Sestrel aero compasses of various types. Finally, there will be a selection of test apparatus consisting of sub standard altimeters, portable mercurial test barometers, A.S.I, testing apparatus, a stan dard mercurial column, a standard boost gauge and an A.S.I, calibrator, with meteoro logical apparatus, including micro-baro graphs, thermographs, hygrographs, Steven son s screen with meteorological thermo meters, Robinson's and electric cup anemo meters, Biram's anemometers, Dines meteorograph, and the like. Makers: Short and Mason, Lid., Aneroid Works, Macdonald Road, Walthamstow, London, E.17. SIMMONDS AEROCESSORIES, LTD.— See under Miscellaneous. SMITHS (Stand 94).—Here will be ex hibited a twin-engine dashboard panel In the Bendix fluid-operated brake, as fitted to the D.H. Albatross, the piston in the operating cylinder forces apart two tappets which bear on the shoes.
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