a method for changing the spin rate of a spinning spacecraft having a dynamic balancing mechanism which utilizes the communications channel between the spacecraft and the receiving terminal , the master index pulse generator on the spacecraft , and the spacecraft axial thrusters . to change the spin rate , a dynamic imbalance of a known wobble angle and phase is introduced by the dynamic balancing mechanism . an axial thruster is then fired for a predetermined time interval thereby coupling a portion of the axial thrust force into the rotational energy of the spinning body .