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by pa7ch 30 days ago
What do you mean by this tower of power effect? Was it just that the 747 had a more powerful take-off or something due to 4 engines?
3 comments

On a normal takeoff, a 4 engine aircraft has less excess power available than a 2 engine aircraft. Aircraft engines are sized to provide a minimum climb gradient with a single engine inoperative. A twin engine aircraft with an with an engine failure had lost 50% of its power. A quad with an engine failure is only down 25%. So the twin’s engines are oversized to compensate.
There was quite a kick when the engines spooled up. I flew mainly SFO/LAX to SYD and the few minutes of full thrust you just kind of sat back in your seat and didn't try to do anything.
More or less. I remember the first time I flew in a tri-jet (after a 747), I was a bit worried on take-off about how we were still on the ground as the end of the runway approached.

To clarify slightly, I first heard "tower of power" used to describe the Saturn V. So two icons of the late 60s.