Response of an Asymmetric Missile to Spin Varying through Resonance

Asymptotic expansions of maximum response angle as well as resonance response angles are derived for constant spin acceleration and for spin acceleration to steady-state spin. These show that the important parameter to be considered is the ratio of missile damping rate to the square root of spin acceleration at resonance. Predictions of the approximate theory are compared with exact numerical calculation for a variety of missiles, and excellent agreement is seen for moderately damped missiles.