Discussion
Statement I: The aft centre of gravity limit is set by the minimum acceptable static margin.
Statement II: The forward limit is set by the elevator power available at low speed.
In the light of the above statements, choose the correct answer.
Answer: D
Correct answer: Both Statement I and Statement II are correct
Both are true, and together they explain why the two limits have quite different characters. The aft limit is about stability: move the centre of gravity too far back and the static margin vanishes. The forward limit is about control authority: move it too far forward and the elevator, even at full deflection and at low approach speed where it is least effective, cannot generate the nose-up moment needed to flare or rotate. An aeroplane outside the forward limit may be very stable indeed and still unflyable.
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