AAS 98-139

ATTITUDE CONTROL ISSUES ASSOCIATED WITH FLEXIBLE AND LOOSELY CONNECTED APPENDAGES

S. Tanygin, T. Williams - University of Cincinnati

Abstract

Flexibility and slop of the connections may in practice greatly affect performance of the closed-loop attitude control system and become especially hazardous for a crewmember performing extra-vehicular activity. At the same time, they can be exceedingly difficult to measure on the ground. The general effect and potentially most damaging ranges of flexibility and slop are studied in this paper. Attitude control modifications leading to a better closed-loop performance are also of interest.

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