Originally Posted by
Azgalor
How the engines do that? What is supposed to be a problem? I expected that power and placement of engines creates this pitch up moment. Is it something aerodynamics related?
Yes its aerodynamic - my understanding ,from reading the whole thread, is that the engine nacelles being in front of the C of G exert aerodynamic forces - a positive angle of attack gives a pitch up moment - and subsequent reduction of stick back pressure approaching the stall - hence MCAS. I was just speculating if a low angle of attack would produce a nose down moment as the engines are presumably mounted to be zero A of A when the wing is at cruise A of A.