PPRuNe Forums - View Single Post - American Airlines Flight 742 "flight control system" problems
Old 31st Mar 2013, 08:37
  #187 (permalink)  
Capn Bloggs
 
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Originally Posted by Dozy
Yes, podded engines mounted under the wing give a pitch-up moment, but there's no denying that as long as that is compensated for, one can get a greater effect on the yaw axis from engines mounted in that manner - it's just basic physics.
This is getting more ridiculous as time goes on. Why do you think you're using thrust vectoring? Because the normal flight controls don't work! You can't "compensate" for the pitchup if don't have any other means of pitch control. Oh hang on, we've got a totally jammed roll/rudder system but a controllable stab/elevator. OK, now I understand...

Originally Posted by Dozy
the main reason T-tails with fuselage-mounted engines went out of fashion was the inherent problems with deep stall in that design configuration, but other considerations were undoubtedly involved.
Designed right, it won't. The real reason was/is weight and balance.
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