Auxiliary Power Unit Aircraft Function

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.

Auxiliary power unit aircraft function.

Apu is necessary to start up the main engines it also powers the airplane s electronics. 2 3 6 the combustible usually gas is mixed in the combustion chamber with air. In airliners apu s are usually located at the very rear of the aircraft below the tail. Others can produce 28 v.

Knowing this will be an explanation of auxiliary power units apu and how they are involved in the operation of an aircraft. An auxiliary power unit also known as apu is a device on a vehicle that provides energy for functions other than propulsion. An mt is a mechanism that uses the flow of a gas to convert thermal energy into mechanical energy. 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.

Pneumatic power for cabin air conditioning systems. Starting power for the main engines. The technology used in the mt is derived from diesel engine turbochargers aircraft auxiliary power systems and automotive designs mts consist of a compressor combustor turbine and generator as shown in fig. Apu is the smallest engine on airplanes.

Auxiliary power units are usually found on large aircraft and naval ships as well as some large land vehicles. Apu generators provide auxiliary electrical power for running aircraft systems on the ground when the main engines aren t running and no ground electrical power is available. Applications include powering environmental systems for pre cooling or preheating the cabin and providing power for crew functions such as preflight cabin cleanup and galley kitchen operation. Please like and subscribe.

How an auxiliary power unit works. The auxiliary power unit apu is a small gas turbine engine mounted in the tail cone of an aircraft to provide autonomous electrical and mechanical power for the following.