Moderators: richierich, ua900, PanAm_DC10, hOMSaR
falter wrote:Hi there,
Is it possible to power certain systems like interior lights/inflight entertainment without needing an APU or ground power unit? Is that something you *can* do safely inside a hangar or does that not happen indoors?
falter wrote:Thank you! You answered another question I had in my head but assumed was obvious - that they wouldn't run the APU or engines indoors.
gloom wrote:Just a quick add-on question.
For aircraft to be powered up - do you need to switch battery on, or will external power completely do the trick? I could imagine some sort of protection on the battery circuit preventing that, but Bat/GPU running parallel with switch on each seems a simpler solution.
Also, are there any systems not powered up with GPU, that would with battery? Except for those that do not need to be powered at ground (eg flight systems, yaw damper etc.).
Thanks, Cheers
Adam
falter wrote:Thank you! You answered another question I had in my head but assumed was obvious - that they wouldn't run the APU or engines indoors.
gloom wrote:Just a quick add-on question.
For aircraft to be powered up - do you need to switch battery on, or will external power completely do the trick? I could imagine some sort of protection on the battery circuit preventing that, but Bat/GPU running parallel with switch on each seems a simpler solution.
Also, are there any systems not powered up with GPU, that would with battery? Except for those that do not need to be powered at ground (eg flight systems, yaw damper etc.).
Thanks, Cheers
Adam
gloom wrote:Just a quick add-on question.
falter wrote:If the tail of the aircraft is kept outside of the hanger door, it is common to run the APU if you require hydraulics for moving flight controls on aircraft like the 747.Thank you! You answered another question I had in my head but assumed was obvious - that they wouldn't run the APU or engines indoors.