Originally Posted by
Davidppp
Hello all.
I'm not in the industry but have rudiments of aero.
So here is my silly question.
If the engines generate lift far forward pitched up this tends to assist further pitch up since the centre of lift moves far in front of the centre of gravity.
If the pitch becomes nose down, at some negative AOA the engines will similarly move the centre of negative lift forwards the air strikes the top of the nacelle. And tend to push nose down.
Is this a reasonable analysis?
David
If you can obtain a copy of "handling the big jets" by DP Davies, this will provide you with an insight into aerodynamics. There are many forces at play when new engines are used on re-designed wings and subsequent certification for aircraft types.