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Aviation History
1961
1961 - 0397.PDF
FLIGHT, 30 March 1961 40* SYSTEM SURVEY A Standard Telephones team studies Russian in preparation for the British Trade Fair in Moscow. Left to right: Max Sette/en and S. E. ]. King, Radio Division; ]. L. Reynolds, Telephone Cable Division; A. ). Wilson, Transmission Division; D. bailey, exhibition stand manager; C. T. Gregar, Transmission Division; N. S. Shepherd, Components Group HF Mobile Station for SHAPE FIRST of six lkW transportable HF radio stations ordered bySHAPE has now been delivered by Racal Engineering Ltd. The station is housed in a transportable cabin—made by O. G. LywoodLtd—and can handle SSB/DSB and FSK communications at between lMc and 30Mc/s. The cabin is sealed and ventilated toallow for a wide range of temperature and atmospheric conditions and may be carried by a three-ton truck or by aircraft. A whipaerial can be set up in 15min to make the station rapidly opera- tional; and larger aerials, with two folding masts, are also carriedwith the station. A diesel-driven generator trailer can supply current in the field. Racal successfully tendered for the contract, in face of heavycompetition from European and American companies, in June 1960; production of the first station, using modified versions ofstandard Racal units, was begun in August. This month US Army personnel began training with the first complete station. Incor-porating TA.127 transmitter and RA.17 receiver, the Racal station is designed to 1963 performance requirements; characteristicsclaimed include flexibility and stability. Plug-in Modules for Autopilots NOW in production at the Transport Aircraft Controls Division ofElliott Brothers (London) Ltd is a wide range of plug-in modules, for Elliott-Bendix PB-20 computer units, and an air data senser. Acomplete system providing for continuous autopilot control during climb, cruise, let-down and automatic flare-out is being producedfor the VC10—it was described in detail in Flight for October 7 last year—but the modules can be packaged in any desired combinationto suit particular applications ranging from instrument servo control to completely automatic landing. A choice of standardATR case sizes is also available. The modules are based on metal cards which can effectivelysupport heavy assemblies such as transformers, motors and gear- boxss. There are a score of different modules, including varioustypes of amplifier, electro-mechanical computers, two- and three- channel circuits, controls and relays. The air data senser and its two monitor units illustrated belowform part of the VC10 system and provide monitored outputs of height, airspeed, Mach number and various gain control andswitching functions. When used with the appropriate controller, smooth transition from one autopilot lock to another is obtainedwithout the necessity for disengagement. The main senser may be used independently and covers ranges of 0-60,000ft in height,lOOkl to 700kt i.a.s. and an equivalent Mach number range. The ranges can be extended for particular applications. Soldiers operating the first of six Racal Engineering IkW HF radio stations for SHAPE. The cabin can be carried by lorry or aircraft and is sealed and ventilated Testing Tacan Receivers AGAINST stiff competition, G. & E. Bradley Ltd, an associatecompany of Joseph Lucas Ltd, has won an RCAF order for 60 Tacan test sets. They will be used to check ARN-52 airborneTacan receivers now being introduced by the RCAF and have been given the designation ARM-501. The order is worth £46,000. The Bradley test set UE.45 was originally designed to MoAspecification and is already being used by the RAF for ARN-21C Tacan and by the Fleet Air Arm for ARN-21. Other test sets havebeen supplied to American aircraft manufacturers for use on aircraft production lines. The equipment permits pre-fiight"go-no-go" checking and simple workshop servicing. ILS for East Germany ANNOUNCED at the Leipzig Fair was an order worth £40,000 fora Pye ILS to be installed at Dresden international airport and the latest VHF ground-to-air communications radio for Schoenefeldtairfield and the East German area. Pye ILS is already installed at airfields in Russia, Hungary and Jugoslavia as well as in numerousothers in Canada. Africa, the Middle and Far East and Britain. Left, an Elliott I ATR case containing some of the range of plug-in modules now being produced by the Transport Aircraft Controls Division. Right, the main air data senser and its two monitor units. These form part of the VCIO control system
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