Backup nutation damping strategy for the Galileo spacecraftA discussion is presented of the design and testing of remedial measures that can be taken to achieve reasonable nutation damping of the Galileo spacecraft in the event of failure of its boom damper in flight. One scheme exploits the effects of payload motion on the nutational stability of a spinning spacecraft. However, the spacecraft-motion-compensation algorithm can only be used if the scan platform bore sight is pointed in a direction chosen to produce rapid damping of spacecraft nutation. A second method suggested for nutation damping is a thruster-based open-loop control algorithm, utilizing a pair of thrusters as actuators.
Document ID
19890066696
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Eke, Fidelis O. (Tuskegee Inst. AL, United States)
Eke, Estelle M. (Tuskegee University AL, United States)