This report describes the twin-gyro concept and the study of a three-axis attitude control system. Results of experimental data obtained from laboratory tests that used physical components are presented.nA twin-gyro controller consists of two counterrotating gyro elements arranged so that control torque is always directed about a single axis inde pendent of gyro gimbal angle. This feature allows the use of large gimbal angles so that a major portion of the momentum stored in the gyros can be transferred to the vehicle without introducing cross-coupling torques.
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