Auxiliary Power Unit Airplane

The auxiliary power unit safir 5k g mi is designed to supply air to engine starters and environmental control systems to drive the ac generator and to supply power to hydraulic systems.

Auxiliary power unit airplane.

Most of the power produced is used to run an electric generator and provide pneumatic air pressure. The unit provides compressed air for air conditioning while the airplane is on the ground and at limited altitude in flight. Pneumatic power for cabin air conditioning systems. Another version of the gpu is fep fixed electrical power.

Starting power for the main engines. 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. The airborne auxiliary power is obtained from a gas turbine auxiliary power unit apu. How an auxiliary power unit works.

Auxiliary power units are usually found on large aircraft and naval ships as well as some large land vehicles. Shaft power for other pneumatic and hydraulic systems. In airliners apu s are usually located at the very rear of the aircraft below the tail. 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.

The primary purpose of an aircraft apu is to provide power to start the main engines. The apu is a compact self contained unit that provides compressed air for engine starting on the ground. The apu auxiliary power unit is the power unit contained on an aircraft which can provide electrical and pneumatic air power. It also features a dual speed sensor exhaust gas temperature sensor oil and fuel signaling filter contamination and signaling of low oil levels.

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. The gpu ground power unit is connected by the ground crew when the aircraft arrives at the gate an provides electrical power only. Unlike the aircraft s main engines the apu outputs almost no thrust. An auxiliary power unit or apu allows an aircraft to operate autonomously without reliance on ground support equipment such as a ground power unit an external air conditioning unit or a high pressure air start cart.