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Elevator angle per g measures

  • A.The stick force needed per g
  • B.The hinge moment per degree
  • C.The trim tab movement per g
  • D.Deflection per unit normal acceleration

Answer: D

Correct answer: Deflection per unit normal acceleration

Elevator angle per g is the additional deflection needed to sustain each unit of normal acceleration in a steady manoeuvre, and it is the standard measure of manoeuvre stability.

It depends on the manoeuvre margin - the distance from the centre of gravity to the manoeuvre point - so it falls as the centre of gravity moves aft, and reaches zero at the manoeuvre point itself. Stick force per g is the related quantity the pilot feels, and certification sets minimum values for it to prevent inadvertent overstressing.

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