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 unit aircraft.
Pneumatic power for cabin air conditioning systems.
With more than 95 000 apus produced and more than 36 000 in service today honeywell has a large apu installed base and is poised for further growth.
Aircraft apus generally produce 115 v alternating current ac at 400 hz rather than 50 60 hz in mains supply to run the electrical systems of the aircraft.
Others can produce 28 v.
Most of the power produced is used to run an electric generator and provide pneumatic air pressure.
This certification guarantees to manufacturers and operators that the.
How an auxiliary power unit works.
Shaft power for other pneumatic and hydraulic systems.
The auxilary power unit safir 5k g z8 can be used in civil aviation applications all around the world.
Unlike the aircraft s main engines the apu outputs almost no thrust.
Starting power for the main engines.
The auxiliary power unit is an actual turbine engine more appropriately called a turboshaft engine.