| 摘要 |
An apparatus (10) for pressurising an aircraft cabin structure (12) and measuring the amount of leakage of the aircraft cabin structure (12) comprises an air supply line (14) which at a first end is connectable to a pressurized air source and which at a second end is connectable to the aircraft cabin structure (12) so as to supply pressurized air from the pressurized air source into the aircraft cabin structure (12), an air supply valve (36) disposed in the air supply line (14), a pressure sensor (50) for sensing the pressure inside the aircraft cabin structure (12) and for providing signals indicative of the pressure inside the aircraft cabin structure (12), an air discharge line (42) which at a first end is connectable to the aircraft cabin structure (12) an which at a second end is connectable to an air discharge opening (44) so as to discharge air from the inside of the cabin structure (12) to the air discharge opening (44), and an air discharge valve (48) disposed in the air discharge line (42). An electronic control unit (ECU) is adapted to control the air supply valve (36) and the discharge valve (48) in dependence on signals provided by the pressure sensor (50) so as to supply pressurized air into the aircraft cabin structure (12) until a first predetermined pressure level is reached inside the aircraft cabin structure (12), to maintain the pressure inside the aircraft cabin structure (12) at the first predetermined level for a first predetermined period of time, and thereafter to discharge air from the inside of the aircraft cabin structure (12).
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