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If the float ratio of an elevator is reduced towards zero, the stick-free neutral point

  • A.Moves aft of the manoeuvre point
  • B.Becomes undefined
  • C.Approaches the stick-fixed neutral point
  • D.Moves further forward

Answer: C

With no float tendency the released elevator stays where it is, so the tail keeps its full contribution and the stick-free neutral point converges on the stick-fixed one. Increasing the float ratio is what drives them apart, moving the stick-free point forward and reducing the free static margin. Nothing here pushes it aft of the manoeuvre point, which lies aft of both neutral points, and the quantity remains perfectly well defined throughout.

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