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http://dx.doi.org/10.5050/KSNVE.2014.24.7.517

Verification of Launch Vibration and Shock Isolation Performance for Spaceborne Compressor Vibration Isolator with SMA Mesh Washer  

Lee, Myeong-Jae (Department of Aerospace Engineering, Chosun University)
Han, Je-Heon (Structures & Materials Team, Korea Aerospace Research Institute)
Oh, Hyun-Ung (Department of Aerospace Engineering, Chosun University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.7, 2014 , pp. 517-524 More about this Journal
Abstract
Micro-vibration induced by on-board equipments such as fly-wheel and cryogenic cooler with mechanical moving parts affects the image quality of high-resolution observation satellite. Micro-vibration isolation system has been widely used for enhancing the pointing performance of observation satellites. In general, the micro-vibration isolation system requires a launch locking mechanism additionally to guarantee the structural safety of mission payloads supported by the isolation system with low stiffness under launch environment. In this study, we propose a passive launch and on-orbit vibration isolation system using shape memory alloy mesh washers for the micro-vibration isolation of spaceborne compressor, which does not require the additional launch locking mechanism. The basic characteristics of the isolator were measured in static and free vibration tests of the isolator, and a simple equivalent model of the isolator was proposed. The effectiveness of the isolator design in a launch environment was demonstrated through sine vibration, random vibration and shock tests.
Keywords
Shape Memory Alloy; Mesh Washer; Micro-vibration Isolation; Vibration Isolator; Shock Attenuation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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