How APU (Auxiliary Power Unit) works
Pratt & Whitney’s APS3200 is the Airbus baseline APU of choice for the Airbus A320 family of aircraft. It is designed to meet performance and environmental requirements for modern day, single-aisle aircraft. The APU comprises a single-shaft, fixed-speed, high-pressure ratio core driving a load compressor that provides bleed air for cabin conditioning and main engine starting, concurrent with 90kVA of electrical power. The APU is also certified for a 180-minute Extended range Twin Operations (ETOPs) operation.
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