APU meaning in Space Science ?

Answer: What is Auxiliary Power Unit mean?

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. Aircraft APUs generally produce 115 V AC voltage at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V DC voltage . APUs can provide power through single or three-phase systems.

reference

Full Form	Category
Asia Pacific University	Academic & Science
Alaska Pacific University	Academic & Science
American Public University	Academic & Science
Azusa Pacific University	Academic & Science
Apucarana	Airport Code
Audio Processing Unit	Computer Hardware
Accelerated Processing Units	Computer Hardware
Accelerated Processing Unit	Computer Hardware
Aliança Povo Unido	Governmental
ANIPUR	Indian Railway Station
Autonomous Production Unit	Jobs
Armored Personnel Unit	Military and Defence
Amherst Political Union	Regional
Auxiliary Power Unit	Space Science
Apucarana Airport	Transport & Travel