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http://dx.doi.org/10.5050/KSNVE.2015.25.1.024

On-orbit Micro-vibration Isolation Performance Verification for Spaceborne Cryocooler Passive Vibration Isolator Using SMA Mesh Washer  

Kwon, Seong-Cheol (Department of Aerospace Engineering, Chosun University)
Jeon, Su-Hyeon (Department of Aerospace Engineering, Chosun University)
Oh, Hyun-Ung (Department of Aerospace Engineering, Chosun University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.1, 2015 , pp. 24-32 More about this Journal
Abstract
Pulse tube-type spaceborne cryocooler is widely used to cool down the infrared sensor of observation satellites. However, such cryocooler also generates micro-vibration which is the one of main sources to seriously affect the image quality during its on-orbit operation. Therefore, to comply with the mission requirement of high resolution observation satellite, additional technical efforts have been required. In this study, we proposed a spaceborne cryocooler passive vibration isolator using SMA mesh washer, which guarantees the structural safety of both the micro-vibration disturbance source and itself under harsh launch vibration loads without an additional holding mechanism and the micro-vibration isolation performance on orbit environment. To verify the micro-vibration isolation performance of the proposed vibration isolator, we performed the micro-vibration isolation measurement test using the dedicated micro-vibration measurement device proposed in this study.
Keywords
Micro-vibration; Isolator; SMA; Cryocooler;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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