Discussion
A pitch rate damper improves the short-period mode primarily by
Answer: B
Feeding measured pitch rate to the elevator produces a moment proportional to and opposing that rate, which is indistinguishable from a larger magnitude of \( M_q \). The damping ratio rises while the natural frequency, set mainly by \( M_\alpha \), is left alone. That is the whole attraction of the scheme: it fixes damping without demanding a bigger tail or a more forward centre of gravity. Static margin is a function of geometry and centre of gravity and is not altered by feedback of this kind. Inertia is a mass property that no control law can change. Hinge moments concern stick forces, a separate design question.
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