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Statement I: Increasing the static margin always improves an aeroplane.

Statement II: A larger margin gives a steeper restoring moment.

In the light of the above statements, choose the correct answer.

  • A.Both Statement I and Statement II are incorrect
  • B.Statement I is correct but Statement II is incorrect
  • C.Statement I is incorrect but Statement II is correct
  • D.Both Statement I and Statement II are correct

Answer: C

The second statement is correct but the first does not follow. A large margin brings heavy stick forces, greater trim drag and a restrictive forward centre of gravity limit, so the aim is an adequate margin rather than a maximal one.

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