Auxiliary Power Units (APU) - Pratt & Whitney
It provides power for the Boeing 747-8 and its predecessor, the PW901A-powered Boeing 747-400. During on-ground operation, it provides bleed air for cabin conditioning from a low spool-driven load compressor, and electrical power from two gearbox-mounted 90kVA generators.
Airliner APU - PW9 series - PRATT & WHITNEY - electric / 50
It provides power for the Boeing 747-8 and its predecessor, the PW901A-powered Boeing 747-400. During on-ground operation, it provides bleed air for cabin conditioning from a low spool-driven load compressor, and electrical power from two gearbox-mounted 90kVA generators.
Auxiliary power unit - Wikipedia
An auxiliary power unit (APU), is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles.
Auxiliary Power Units - Honeywell Aerospace
Our Auxiliary Power Units provide the power necessary to keep a variety of aircraft systems running smoothly. Whether it's temperature control in the cabin, providing strength to engine starters, or powering electronics and lighting in the cockpit, our Auxiliary Power Units are relied upon in short-range, long-range and military applications.
Your Airliner Has A Hidden Engine! - AeroSavvy
2015年7月25日 · The Boeing 747-400 APU is a variant of a Pratt & Whitney turbofan engine used on Cessna Citation and Mitsubishi Diamond business jets. This is a very powerful engine. It takes a lot of horsepower to run the systems on the 747 when the main engines are shut down.
Boeing 747-400 APU start-up - YouTube
2012年8月5日 · The 747 Auxillary Power Unit, or APU, is a gas turbine engine that is housed in the tail section of the aircraft. The APU can supply electrical and pnuematic...
Installation of the APU in the 747 Airplane 680709 - SAE International
The implementation and installation of Boeing's 747 auxiliary power unit (APU) was the result of efforts tailored to the 747 airplane's needs. Greater power requirement of the plane and its size made unique demands in formulating an APU design specification. Testing, specifications, and …
APU- PW900 - Aerospace Online
It also has drive pads for two airframe supplied generators that provide electrical power to the airplane. This APU, which is used on the Boeing 747-400 aircraft, is also suitable for marine applications.
747飞机APU启动抑制排故总结_故障_关车_转速 - 搜狐
2022年5月4日 · 747使用的apu型号是pw901，有两个转轴，分别为n1轴和n2轴，n1轴是低压轴，连接动力涡轮和负载压气机，负载齿轮箱等，在正常运行时保持100%的转速。 N2轴是高压轴，连接高压涡轮和高压压力机。
PW901A - Pratt & Whitney Auxiliary Power Unit (APU)
Pratt & Whitney's PW901A APU is a two-shaft gas turbine engine, originally derived from a Pratt & Whitney turbofan engine used in popular business jets. It provides power for the Boeing 747-400. During on-ground operation, it provides bleed air for cabin conditioning from a low spool-driven load compressor, and electrical power from two gearbox ...