Physics
Scientific paper
Apr 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aiaaj..13..448t&link_type=abstract
AIAA Journal, vol. 13, Apr. 1975, p. 448-453.
Physics
Flexible Bodies, Motion Stability, Nutation, Solar Heating, Spacecraft Motion, Thermal Stresses, Appendages, Bending Vibration, Equations Of Motion, Forced Vibration, Moments Of Inertia, Periodic Variations, Solar Radiation, Spacecraft Design, Spacecraft Stability, Spin Resonance, Spin Stabilization
Scientific paper
This paper deals with a thermally induced nutational body motion of a spinning spacecraft with flexible appendages. The explanation of this phenomenon is as follows: when this class of spacecraft is exposed to solar radiation, thermally induced bending vibrations of appendages occur at a spin frequency. These vibrations cause a periodic variation of the moments of inertia of the spacecraft at that frequency and this, in turn, produces self-excitation of nutational body motions through the instrumentality of the parametric excitation. The amplitude of the nutational body motion is determined by means of the method of averaging and the stability of the motion is examined in detail.
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