AIR INLET SYSTEM FOR AUXILIARY POWER UNITS

摘要

An air inlet system for an auxiliary power unit (APU) has an intake ducthaving a walldefining an inlet plenum and forming an inlet opening configured to direct airinto theinlet plenum. The system further comprising a load compressor passage in fluidcommunication with the inlet plenum and leading to a load compressor of theAPU; anda core compressor passage in fluid communication with the inlet plenum andleading toa core compressor of the APU. A deflector is provided in the inlet plenumbetween theinlet opening and the core compressor inlet to deflect at least part ofparticles carried byan incoming airflow away from the core compressor inlet toward the loadcompressorinlet.