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Aerodynamics Practice Test

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Which of the following statements best describes the effect of a forward CG on elevator pressure?
Correct Answer:
It increases back elevator pressure
Explanation:
A forward CG makes the aircraft more pitch-stable and increases the restoring moment that the tail must provide to hold the nose up or down as needed. To trim or hold a given pitch with the CG forward, the elevator must act more in the direction that produces a nose-up moment, which requires greater force from the control system pushing the elevator toward the back. In other words, the actuators develop more pressure in the back-elevator direction to counteract the nose-down tendency and maintain the desired attitude. That’s why this option is the best description.

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