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Stability of a dual-spin satellite with two dampersThe rotational stability of a dual-spin satellite consisting of a main body and a symmetric rotor, both spinning about a common axis, is investigated. The main body is equipped with a spring-mass damper, while a partially filled viscous ring damper is mounted on the rapidly spinning rotor. The effect of fluid motion on the rotational stability of the satellite is calculated, considering the fluid as a single particle moving in a tube with viscous damping. Time constants are obtained by solving approximate equations of motion for the nutation-synchronous and the spin-synchronous modes, and the results are found to agree well with the numerical integrations of the exact equations. A limit cycle may exist for some configurations; the nutation angle tends to increase in such cases.
Document ID
19740053911
Document Type
Reprint (Version printed in journal)
Authors
Alfriend, K. T. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Hubert, C. H.
Date Acquired
August 7, 2013
Publication Date
July 1, 1974
Publication Information
Publication: Journal of Spacecraft and Rockets
Volume: 11
Subject Category
SPACE VEHICLES
Distribution Limits
Public
Copyright
Other