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Aviation History
1962
1962 - 2287.PDF
578 FLIGHT International, 4 October 1962 INDUSTRY International Flight Systems Products Company News Flight Systems Radio for Aeroflot Avia Export, the Russian purchasing organization in Britain, last week signed orders worth £250,000 for aircraft radio equipment with Standard Telephones and Cables. Part of the order covered SR32 ILS/VOR and SR33 marker receivers for Aeroflot Tu-104s, but the major order was for the later SR34/35/36 series VOR/ILS marker receivers for Il-18s. A number of Tu-104s have already been fitted with STC nav radio for 18 months, and the equipment now ordered for the 11-18 is standard in BE A Viscounts, Vanguards and Comets. All the equipment is designed and manufactured by STC in Britain. The company has now sold well over £lm of equipment to Russian and east European airlines, including LOT, CSA, TAROM, East German Deutsche Lufthansa and to the Jugoslavian airline JAT. Ultra-light on the Head One of the lightest headsets yet made, the Stratolite, was introduced recently by Airmed Ltd of Harlow, Essex. Complete with boom microphone, it weighs less than three Mr V. Khrianin (right) of Avia Export signs the £250,000 order for aircraft radio for Aeroflot in the office of Mr Max Settelen, marketing man ager of STC Radio Division i £4fl MM •nfe* 7 J I msZ '•«=• M • ounces—less than 40 cigarettes or a packet of 20 cigarettes and a box of matches. Miniature receivers in plastic mouldings are sprung to the head by two wires, in twin-bore plastic tubing, which also serve as electrical conductors. They pass round the back of the head. Small plastic funnels, which do not rest on the ear, pipe the sound from the receiver to small mouldings resting on the orifice of the inner ear. The headset is located vertically by a semi rigid plastic tube over the top of the head, terminating in length-adjusting rods which are a friction fit in the plastic. A titanium boom supports the micro phone in a nylon housing with a self-adjust ing friction clutch to control swivelling. The boom can be undipped and fastened to the other side of the headset if required. Sensitivity of the microphone is such that it need not be held close to the lips; and a carbon microphone can also be supplied. Alternative plug-in ear inserts will also be available. The extremely light weight and absence of pressure and heating on the ear should make the Stratolite very comfortable for use either in the air or on the ground. Also new from Airmed are two carbon microphones with improved distortion and noise characteristics. One is of the miniature button type and measures only fin in diameter by £in thick. The other is a close-speaking, boom mounting, lip microphone with high output voltage, which overcomes problems of electrical noise and interference in aircraft circuits. Both microphones have a frequency response smoothly maintained between 400c/s and 5,000c/s, falling away rapidly above and below these levels, and both have clips and contact assemblies identical with standard American types. Gyro Test Table Shorts have decided to market a general-purpose, production ver sion of the two-axis gyro testing table they developed for the Belfast control rig. Powered by 2,5001b/sq in electro-hydraulic servos and having an operating surface of more than 400 sq in split into two levels, the table can be driven at up to 100°/sec, with deceleration on the resilient stops limited to 6g on the pitch stops and 4g on the roll stops. The table has 30° of roll and 28£° of pitch freedom: d.c. inputs of up to ±100 Volts are accepted by the Ahmed's new Stratolite head-set tips the scale at just under three ounces servos and the maximum threshold is less than the demand for 0.05° of table rotation. Wiring looms allow for 480 electrical leads to equipment weighing up to 1001b. Larger operating surface or a three-axis unit with a surface of 20f in diameter will be offered. Separate pump set and electronic amplifier units are part of the system, hydraulic accumulators providing for high transient hydraulic demands. Supersonic Beacon An anti-collision beacon designed specially for supersonic aircraft has been developed by the Plessey Co (UK) Ltd. The lamp assembly pro trudes less than an inch beyond the skin of the airframe, and a feature of the system is electronic flash synchronization and timing over extremes of ambient tempera ture. The lamp and its control box are illustrated on the opposite page. US Navy Doppler Following comparative evaluation of various designs, General Precision Laboratories has received an order to produce the AN/APN-153(V) Doppler, which will initially be fitted in the P3V Orion, S2F-3 Tracker, A2F intruder and W2F Hawkeye. The APN-153(V) is defined as a completely self-contained air borne navigator.
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