Date of Award
Doctor of Philosophy
Launchings of several of the STAR 48 Communications Satellites from the Space Shuttle have consistently resulted in a nutating motion of the spacecraft. Sloshing fluid stores have been suspected as a source of dynamic instability. A mathematical model of the sloshing fluid motion coupled with the satellite dynamics was developed and the launch phase simulated. The flight simulation shows similar behavior when compared to telemetered flight data. A control law was developed, using the mathematical model, which suppresses the nutating motion and may also be used for earth pointing maneuvers. An implementation of the control law was outlined.
Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/
Daniel Eugene Hill
Hill, Daniel Eugene, "Dynamics and control of spin-stabilized spacecraft with sloshing fluid stores " (1985). Retrospective Theses and Dissertations. 8702.