Degree Type

Dissertation

Date of Award

1985

Degree Name

Doctor of Philosophy

Department

Mechanical Engineering

Abstract

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.

DOI

https://doi.org/10.31274/rtd-180813-8688

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Daniel Eugene Hill

Language

en

Proquest ID

AAI8604472

File Format

application/pdf

File Size

184 pages

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