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Aviation History
1950
1950 - 1222.PDF
FLIGHT, 29 June 1950 CABIN ATMOSPHERE CONTROL INTAKE FILTER BLOWER SPILL VALVE DUCT RELIEF VALVE AUTO CUT- OFF VALVE HUMIDIFIER ACCESSORIES TOILET PANTRY FOUL AIR DUCT FRESH AIR DUCT HUMIDIFIER HEATER REFRIGERATOR RECIRCULAT1ON FAN SILENCER HEAT EXCHANGER SILENCER NON-RETURN VALVE METERING DUCT MASS FLOW CONTROLLER MASS FLOW INDICATOR PRESSURE ONTROLLER MAIN CONTROL PANEL REDUCING VALVE DISCHARGE VALVE MANIFOLD INWARD RELIEF VALVE SAFETY VALVE GROUND > PRESSURE CONNECTION GROUND CONDITIONING CONNECTION The system of a typical air liner, fully equipped for Cabin Atmosphere - __, control, is represented above. .. /-_ By presetting a simple selector, cabin pressure can be controlled from take off so that the cabin climbs to a maximum of 8,000 feet during the time *• the aircraft climbs to its maximum operating altitude. The internal rate of change, also capable of selection, is normally equal to a rate of climb of 300 feet per minute. Lesser cabin heights can be established at will for intermediate -''.'. cruising altitudes, and cabin height can be varied in flight. Once a given :? V: cabin altitude is established it is maintained automatically irrespective of aircraft manoeuvre. An automatic device prevents the maximum permitted differential pressure being exceeded. -;;..- v ; : Flow control units maintain a constant air supply irrespective of variations in ambient pressure, or engine speed. Temperature and humidity control units ensure comfortable and safe cabin conditioning. . • Complete safety, under all conditions, is assured by the incorporation of such items as safety valves, duct relief valves, non-return valves, etc NORMALAIR LTD. YEOVIL ENGLAND DESIGNERS AND MANUFACTURERS OF AIR CONTROL EQUIPMENT
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