| 摘要 |
PROBLEM TO BE SOLVED: To surely and efficiently control pressurization and control temperature in an aircraft cabin, and to supply fresh air independently of flight height. SOLUTION: This is a method of operating an aircraft system having a first compressed air supply source structured of a first compressor filled with open air, ram air and/or pressurized air and to be driven at least one motor and/or at least one turbine and provided with an exhaust opening directly or indirectly communicated with the aircraft cabin. The aircraft system has at least one second compressed air supply source provided with an exhaust opening directly or indirectly connected to the aircraft cabin. In the first operation mode, only the first compressed air supply source is communicated with the aircraft cabin, and in the second operation mode, both the first and the second compressed air supply sources are communicated with the aircraft cabin. Operation mode is selected in response to the open air pressure, and when the open air pressure is high, the first operation mode is set, and when the open air pressure is low, the second operation mode is set. COPYRIGHT: (C)2007,JPO&INPIT
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