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Aviation History
1955
1955 - 1060.PDF
172 FLIGHT, 29 July 1955 THE INDUSTRY Three-stage Air Compressor TZJOR installation in one of their plants at Haren, near Brussels,-•- a three-stage air compressor has been supplied to Societe Anonyme Beige de Constructions Aeronautiques (S.A.B.C.A.),who are building Hunters for NATO. The air compressor, produced by Williams and James (Engineers), Ltd., of Gloucester,has been installed in connection with the testing of undercarriages and other hydraulic equipment. The output of the plant is six cubic feet per minute of freeair at up to 3,500 Ib/sq in pressure. Two water-cooled com- pressors are driven through vee belts by motors of 5 b.h.p. and2\ b.h.p. respectively, the second unit being a booster providing a third stage of compression. The control panel includes coolers,air dryer, electrical contractors and pressure switch. The coolers are equipped with moisture traps to allow condensation to bedrained away. The air compressor installed by S.A.B.C.A. The plant is fully automatic up to 1,000 lb/sq in, producinga constant supply of air. After the second-stage compression, air is passed through the Birlec Lectrodryer, whence it is deliveredin a very dry state. When air at 3,500 lb/sq in is required, the booster unit isswitched on and air is drawn through a pressure-reducing valve (which limits intake pressure to 600 lb/sq in), to the suctionside of the booster. After compression, air is fed to the receivers on the right-hand side of the panel. Smiths Technical Services Appointment TN succession to Mr. L. R. Langmead, who died recently, Mr.•*• Eric Roy Sisson, A.R.Ae.S., has been appointed technical services manager to Smiths Aircraft Instruments, Ltd. Latterlywith B.O.A.C., as project en- gineer on Comet aircraft, Mr.Sisson has spent his life in aviation. After a four - yearapprenticeship at the Hawker Aircraft, Ltd., starting in 1930,he joined the de Havilland draw- ing office at Stag Lane and thenwent to that company's service department. In 1937 he joinedImperial Airways and was for several years stationed in Africa,as a flight engineer and station engineer. During the war heflew as a B.O.A.C. engineer officer in the Boeing 314 trans-atlantic flying-boats. In 1946 B.O.A.C. sent him to LockheedBurbank plant as one of the Corporation's representatives re-sponsible for accepting the first of the Constellations whichthey ordered. Mr. Sisson, who is 40 years of age, lives at Welwyn Garden City, Herts. Mr. E. R. Sisson. This new type of lightweight starting and servicing unit, employed by B.E.A. for its Viscounts, is equipped with an air-cooled diesel engine driving a D.C. generator. A Varley battery enables a heavy starting current to be supplied, by virtue of low internal resistance. The manu- facturers of the unit are Red Devon, Ltd., of Totnes. Jet-pipe Temperature Checking A WELL known American item of test equipment, the B. and**• H. Jetcal gas-turbine temperature-system tester, is to be manufactured under licence in this country. Obviating the necessity for running engines in order to checkthe accuracy of jet-pipe thermocouples, the Jetcal is a heater embodying a standard thermocouple; and the associated apparatusincorporates a potentiometer which enables the aircraft instru- ment reading to be compared with the output from the standardthermocouple. The tester is simply plugged into the hangar power mains, and the whole check, it is stated, need not takemore than 15 minutes. The saving of cost in comparison with an engine-run is, clearly, very large indeed. The British firm concerned are Bryans Aeroquipment, Ltd., ofWillow Lane, Mitcham, Surrey, who have secured sole rights for the manufacture and sale of Jetcal "G" and "H" models forthe whole of the British Commonwealth, Europe, and the Middle and Far East, with the exception of Canada and Japan, and ofSoviet-controlled countries. IN BRIEF For the year ended March 31st, 1955, Blackburn and GeneralAircraft, Ltd., announce a group profit of £520,857 before provid- ing for taxation (1954, £451,607). The 1955 figure includes£20,110 provision in previous years and no longer required. * * + Manufacturers of air compressors and diesel engines, the Stock-holm firm of Calmodiesel AB have appointed Muir and Adie, Ltd., of Croydon Airport, to be their agents in this country. The Bristol Aeroplane Co. of Canada has announced the appointment of Mr. V. V. R. Symonds as sales manager (air- craft) in their aircraft division at MacDonald Brothers Aircraft, Ltd., Winnipeg. He will be princi- pally concerned with the sale of the Britannia and the Bristol range of helicopters, both in Canada and the U.S.A. Mobile industrial X-ray equipment, in 150, 220, 300 and400 KVp versions, is described and illustrated in a leaflet issued by Pantak, Ltd., 72-76 Alpha Street, Slough, Bucks. ; * * * Wheel- and bearing-pullers of exceptional power, some ofthem with hydraulic operation, are listed by E. F. Allchin and Co., 137 High Street, Aston, Birmingham 6.* * * BX Plastics, Ltd., Higham Station Avenue, London, E.4, havepublished an informative data folder dealing with the applications and characteristics of their thermoplastic raw materials. It is theirclaim that their range of these materials is the widest in the country. * * * A number of Netherlands aviation executives attended a recentdemonstration of the Stream-Line filter for aviation fuel. Held at the new Fokker factory near Schiphol Airport, the demonstra-tion was arranged by J. C. Bernelot Moens of Amsterdam, who represent Stream-Line Filters, Ltd., in Holland.
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