by expat » Sat Aug 22, 2015 3:53 am
Aircraft voltage has been standardised across the known world for many tens of years. Military or civilian, big birds (not GA) run a voltage or 115V at 400HZ and battery power at 28V. A generator or starter generator will be using these standards. These outputs will be controlled by a GCU, (Generator Control Unit) rigorously to these values. A slight spike or drop and the relevant generator will be dropped like a bag of hot poop. Why standards, well if we did not have them, then every airport of military base would have to have a huge diverse of ground power carts. 115V and 28V power plugs are also the same world wide too. As for the C5A Galaxy, I have absolutely no idea about ANYTHING to do with the systems on that aircraft, however, I can tell you I am 100% positive that this aircraft has 115V, 400HZ and a few 28V batteries. As for amperage, my experience of 30 years of aviation, that runs from around 10 to 12Amps at no significant load up to around 70Amps with a heavy load, but that is just a rough middle of the road figure.
Matt
"A bit of a pickle" - British translation: A catastrophically bad situation with potentially fatal consequences.
PETA
People Eating Tasty Animals.
B1 (Cat C) licenced engineer, Boeing 737NG 600/700/800/900 Airbus A318/19/20/21 and Dash8 Q-400
1. Captain, if the problem is not entered into the technical logbook.........then the aircraft does not have a problem.
2. And, if you have time to write the fault on a napkin and attach to it to the yoke.........you have time to write it in the tech log....see point 1.
