In the aircompressor demand is not high, the general use of the modulation control, that is, through the control of air inhaled compressor is to ensure that the system need air pressure.
The aircraft engines are the primary source of compressed air in flight. The air is bled from the 7th or 10th stage of the engine HighPressure (HP) compressor.
飞行中，发动机是主要的气源。空气由发动机高压压气机第7级或第10级引出。
3
A second pipe pushes in high-pressureair from a compressor.