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Aviation History
1954
1954 - 0302.PDF
4 FLIGHT 5 FEBRUARY 1954 CABIN TEMPERATURE CONTROL SPECIFICATION Selection Range Control Band Width Differential Electrical Supplies Electrical Connections Weight Operating Conditions Vibration 'T7Ze&£injB%mi^ Acce le rat ion AUTOMATIC CONTROLS -5°C to +35°C ±5°C ±2i°C 11S volt 400 c.p.s. Single Phase and 24 volts D.C. (nominal) Consump tion 6 watts. Power Factor 0.8 Breeze Plug 4 lb. 12 ozs. (Control Unit) -S0°C to +70°C (Follow-up Resistor)-60°C to + IO0°C ToBSS G.IO0 To BSSG.IO0 This Cabin Temperature Control will give a relatively coarse but stable automatic control, which will keep the temperature of the sensing point within a band width centred on the selected temperature. It is- unaffected by changes of voltage and frequency met within the normal aircraft supply. The control, however, being an inching control, is selected to control about a point within the control band, when, under stable conditions the temperature of the sensing element will be held within the differential of the system. It consists of four units; the Magnetic Amplifier Control Unit, the Sensing Element, the Temperature Selector, and the Follow-up Resistor, the latter being mechanically linked to the temperature control valve. TEDDINGTON CONTROLS LTD., CEFN COED, MERTHYR TYDFIL, SOUTH WALES (Merthyr Tydfil 666) 16 mm CINE AIRCRAFT CAMERA M^0 ***/<£* An entirely new camera designed for high definition photography of air-to-air and air-to-ground subjects W. VINTEN LTD. • North Circular Road • Cricklewood • N.W.2. Tel: GLAdstone 6373
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