Experimental Research on Whole-Spacecraft Vibration Suppression
Zhang Jun,Chen Yong,Hua Hongxing,Zhang zhiyi
(State key laboratory of vibration, shock &noise Shanghai Jiao tong University, Shanghai, 200240, China)

Abstract: The experimental research on the whole-spacecraft vibration suppr ession, is carried out, where a series of isolator elements are interposed between the adapter and the launch vehicle, and a constrained damping layer is attach ed to the adapter surface. The acceleration responses of the concerned locations are measured as the whole-spacecraft vibration suppression system is under axi al and lateral base excitation, the frequency responses with and without vibrati on suppression system are compared to verify the efficacy. According to the experimental results, it indicates that the whole-spacecraft vibration suppression system can effectively isolate the spacecraft axial / lateral vibration due to the broadband structure-born launch environment, reduce the launch-induced dyna mic loads to the satellite to enhance the launch reliability.
Keyword:vibration suppression, isolator, launch vehicle, constrained damping layer.