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DC-10/MD-11 Engine #2 thrust question

Posted: Tue Jan 19, 2021 8:16 am
by slinker
Hoping I can get a definitive answer on this. If both engines 1 and 3 are shut down in flight, does the nose pitch up or down? I think my brain is overcomplicating the physics involved with thrust, weight, center of gravity vs. center of thrust, etc...

Thanks!

Re: DC-10/MD-11 Engine #2 thrust question

Posted: Tue Jan 19, 2021 8:27 am
by Armadillo1
" If both engines 1 and 3 are shut down in flight", its the same as any twin. pitch-up moment removed.

Re: DC-10/MD-11 Engine #2 thrust question

Posted: Tue Jan 19, 2021 10:41 am
by atav
slinker wrote:
Hoping I can get a definitive answer on this. If both engines 1 and 3 are shut down in flight, does the nose pitch up or down? I think my brain is overcomplicating the physics involved with thrust, weight, center of gravity vs. center of thrust, etc...

Thanks!


Because engine #2 is above the center of gravity, it causes a nose down moment. Engines 1 and 3 create a nose up moment like all underwing mounted twins.

Re: DC-10/MD-11 Engine #2 thrust question

Posted: Tue Jan 19, 2021 2:46 pm
by CosmicCruiser
And you've got bigger problems to worry about! LOL!