Abstract: Composite control of simultaneous maneuvers of a spacecraft platform and its appendages is potential research direction. Requirements and research contents are analyzed in this paper. Then, complete dynamics equation of a two-rigid-body system as a simplest object of the composite control is derived. Many topics are discussed, such as complexity of the problem, description of attitudes of the spacecraft platform, model simplifying for its composite controller and coupling characteristics of the system. The composite controller are designed for the system and numerical simulation done. Some principle advises about modeling, feedforward and bandwidth band choice strategies are given.

Key words: spacecraft platform, appendage, simultaneous maneuver, composite control