To ensure only the longitudinal static stability (and not the condition for equilibrium) of a low speed aircraft, the aircraft components must be designed to satisfy which one of the following conditions:
(A) $\frac{\partial C_{m}}{\partial \alpha}<0$ and $C_{m 0}>0$
(B) $\frac{\partial C_{m}}{\partial \alpha}<0$
(C) $\frac{\partial C_{m}}{\partial C_{L}}<0$ and $C_{m 0}<0$
(D) $\frac{\partial C_{m}}{\partial C_{L}}=0.0$

Question ID - 1 | SaraNextGen Top Answer

To ensure only the longitudinal static stability (and not the condition for equilibrium) of a low speed aircraft, the aircraft components must be designed to satisfy which one of the following conditions:
(A) $\frac{\partial C_{m}}{\partial \alpha}<0$ and $C_{m 0}>0$
(B) $\frac{\partial C_{m}}{\partial \alpha}<0$
(C) $\frac{\partial C_{m}}{\partial C_{L}}<0$ and $C_{m 0}<0$
(D) $\frac{\partial C_{m}}{\partial C_{L}}=0.0$