Thermal and Structural Analysis of FIMS Grating

Journal of Astronomy and Space Sciences

K. Kang¹  K.-S. Ryu¹  K.-W. Min¹  H. Jin²  U.-W. Nam²  K.-I. Seon²  W. Han²  J.-H. Park²  W.-B. Lee²  I.-S. Yuk²  J. Edelstein³  E. Korpela³ 

[1] Satellite Technology Research Center, KAIST;Space Science Research Group, Korea Astronomy Observatory;Space Sciences Lab., University of California, Berkeley;

关键词: FINITE-ELEMENTS METHODS;    GRATINGS;    HEAT TRANSFER;   

DOI  :  

来源: DOAJ

【 摘 要 】

Far ultraviolet IMaging Spectrograph (FIMS) should be designed to maintain its structural stability and to minimize optical performance degradation in launch and in operation enviroments. The structural and thermal analyzes of grating and grating mount system, which are directly related to FIMS optical performance, was performed using finite element method. The grating mount was made to keep the grating stress down, while keeping the natural frequency of the grating mount higher than 100 Hz. Transient and static thermal analyzes were also performed and the results shows that the thermal stress on the grating can be attenuated sufficiently The optical performance variation due to temperature variation was within the allowed range.

【 授权许可】

Unknown