Discussion
Elevator power describes
Answer: A
Correct answer: Pitching moment per degree of deflection
Elevator power is the control derivative \( C_{m\delta e} \) - the pitching moment coefficient generated for each degree of elevator deflection.
It measures authority, not effort. What the pilot feels is the hinge moment and hence the stick force, which is a separate quantity and can be adjusted by aerodynamic balance or an artificial feel system without altering the power at all. Maximum deflection is a mechanical limit; the power says how much moment each degree of that travel buys.
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