Starting 4 engines
Hi,
When you are starting up a 747 or 340 or something similar, I am under the impression that you can start two engines simultaneously. Is this correct? I suppose you would require an APU with an air output sufficient to spin two starters.
The reason I ask is that I watched a video of an 340-600 starting up and taxiing out, and they would start #1, pause, then start #2 while #1 was still spooling up. When #1 was at idle, #3 was started. When #2 was idling, #4 was started.
One thing that was interesting was how wide that jet has to take corners while taxiing!! It looked as though the captain was going to do some 4X4 ing, but looking at the cameras on the tail and behind the nose wheel, you could see that he had everything under control. Really cool.