ATTITUDE MOTION OF DUAL-SPIN SPACECRAFT COMPOSED OF TWO ASYMMETRIC BODIES

摘要

The attitude motion of a dual-spin spacecraft composed of two asymmetric bodies isdiscussed by using the method in Refs. [1-3] in combination with asymptotic expansionequations and averaging algorithm. The nutational stability is calculated. The dynamic trapstate, i. e. a nonlinear resonance in the attitude motion, is investigated when the spin rateof the rotor comes near that of the relative rotation during the despun process. The presenceof trap state is shown to depend on double transverse inertia asymmetry between the rotorand platform.