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Stability study of the Large Space Telescope /LST/ system with nonlinear CMG gimbal friction (1974)

Singh, G. ; Seltzer, S. M. ; Kuo, B. C.

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Publication Date: 2019-07-13

Description: The purpose of the investigation reported upon is to study the existence and characteristics of self-sustained oscillations in the dynamic behavior of the Large Space Telescope (LST) system due to the presence of nonlinear gimbal friction in the control moment gyroscopes (CMGs). A continuous-data single-axis model of the LST is considered. A solid friction model is used to represent CMG gimbal friction. A rigorous mathematical model is derived for use in a continuous describing function analysis. Conditions for self-sustained oscillations are then determined.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

Type: AIAA PAPER 74-874 , Mechanics and Control of Flight Conference; Aug 05, 1974 - Aug 09, 1974; Anaheim, CA

Format: text

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