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The trim condition of an aeroplane corresponds to

  • A.The speed of minimum drag
  • B.The neutral point position
  • C.The angle of attack at which the pitching moment is zero
  • D.The angle of attack of maximum lift

Answer: C

At that point the aeroplane will hold its attitude without any pitching control input. Stability concerns what happens when it is disturbed from there, which is a separate question from where the trim point itself lies.

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