Auxiliary Power Unit How It Works

Often found in the tails of larger jets and turboprops apus serve several useful purposes.

Auxiliary power unit how it 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. How an auxiliary power unit works. 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 works in a similar way to an aircraft s engine and has three roles.

Others can produce 28 v. The auxiliary power unit is a jet turbine uses the same fuel for wing turbines. The apu air tower improves air circulation reducing apu run time by up to 22. 2 thoughts on how it works.

To supply conditioned air to the cabin as a source of electrical power for the aircraft and lastly as a means of engine starting. Since cold air is heavier than warm air the apu has to work very hard to push the air up above the bunk. 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. Generator supplies a.

Auxiliary power unit apu dedi e s says. Triggers an electric generator pneumatic and hydraulic pumps. An apu auxiliary power unit is a small turbine engine installed to provide supplementary power. Reliable all electric auxiliary power unit that not only saves fuel but delivers unmatched driver comfort previously unavailable in an electric unit.

A flap is opened allowing air inlet which is compressed and provided by apu through bleed control valve. January 24 2016 at 20 21 dear sir apu gtcp b 737 500 with.