Auxiliary Power Unit How It Works

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 how it works.

Testing facilities have to be fully correlated and approved by the oem s our facilities are designed to test auxiliary power units at various conditions including a full performance condition with the confidence of producing reliably confirmed data. Triggers an electric generator pneumatic and hydraulic pumps. The apu air tower improves air circulation reducing apu run time by up to 22. Reliable all electric auxiliary power unit that not only saves fuel but delivers unmatched driver comfort previously unavailable in an electric unit.

Often found in the tails of larger jets and turboprops apus serve several useful purposes. Generator supplies a. When handling auxiliary power units the test facility and testing are critical to safeguarding the reliability and functionality of the apu. Others can produce 28 v.

The auxiliary power unit is a jet turbine uses the same fuel for wing turbines. How an auxiliary power unit works. 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. An apu auxiliary power unit works in a similar way to an aircraft s engine and has three roles.

A flap is opened allowing air inlet which is compressed and provided by apu through bleed control valve. Apu is connected to ac generator through a gear box. 2 thoughts on how it works. Auxiliary power unit apu dedi e s says.

Many of these roles are used routinely in day to day flying but the apu also serves as backup in the event of a. An apu auxiliary power unit is a small turbine engine installed to provide supplementary power.