I am looking into the typical energy usage of a passenger aircraft when stationary. There are two options:
- Using the APU
- Connection to any ground equipment such as a GPU
I have some data to analyse to see whether an aircraft uses the APU. The data basically shows signals for ground power usage, and I assume that the aircraft uses the APU when no signals are sent. However, this does not always hold. Sometimes you see patterns with a bit of usage and then nothing. The amount of electricity also differs a lot per flight and aircraft. Can anyone tell me more about the typical electricity demand of a commercial, passenger flight?
Are there typical patterns? Does the APU have priority over ground power when both can deliver electricity (so when ground power is connected and the APU is switched on, where does the aircraft take its power from)?