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CSME 2020/06
Volume 41 No.3
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325-335
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Investigation on Microvibration Induced by Reaction Wheels
Mankour Abdeljelil a
aDepartment of Mechanical Engineering, Centre of satel-lite development, Pingtung, Taiwan 91207, ROC.
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Abstract:
Reaction Wheel Assemblies are actuators commonly used for satellite attitude control. During their functioning RWAs produce undesired disturb-ances transmitted through satellite structure and can significantly affect the performance of vibra-tion-sensitive payload. Microvibrations of a satellite reaction wheel assembly are commonly analysed in either hard-mounted or coupled boundary conditions, though coupled wheel-to-structure disturbance mod-els are more representative of the real environment in which the wheel operates. Micro-vibration is a phe-nomenon that affects the payload pointing. In this article we want to investigate a solution to damp and decouple the moving part to a soft mounting on the structure that supports the wheels. A couple of core honeycomb plate thickness and mounting stiffness were analyzed to access their damping efficiency on microvibration source. Simulations show that the isolation is effective for micro-vibration suppression and issues about micro-vibration in integrated design are identified.
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Keywords: Microvibration, Reaction wheel, Transfer function, Honeycomb plate
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©
2020
CSME , ISSN 0257-9731
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