Ensuring the Survivability of Spacecraft Control System at Critical Failures in Flywheel Cluster

A method for ensuring the survivability of a spacecraft attitude control system with minimally redundant cluster of the flywheels and magnetic actuator at the faults of any flywheels are presented. The results of computer simulation were obtained and it was found if any two of the four flywheels according to the General Electric scheme fail, digital control of the flywheel cluster and magnetic drive allows the Earth-observing satellite to maintain observation of given terrestrial targets.