COOLING AIR INLET AND METHOD FOR OPERATING A COOLING AIR INLET

摘要

A cooling air inlet (32) which is particularly suitable for use in an engine bleed air system (10) of an aircraft air conditioning system comprises a cooling air inlet opening (32) which opens into an inlet portion (38) of a cooling air line (28). A cooling air inlet valve (40) which is positionable in a first open position or a second open position is arranged in the inlet portion (38) of the cooling air line (28). The cooling air inlet valve (40) is adapted to effect the build-up of a first cooling air admission pressure (p1) in the inlet portion (38) of the cooling air line (28) in its first open position and the build-up of a second cooling air admission pressure (p2) in the inlet portion (38) of the cooling air line (28) in its second open position. The second cooling air admission pressure (p2) is greater than the first cooling air inlet pressure (p1).