TY - GEN
T1 - Vibration properties of mirror foils for hard X-ray telescope onboard satellite
AU - Yoshimura, Takahiro
AU - Kosaka, Tatsuro
AU - Awaki, Hisamitsu
AU - Ogi, Keiji
AU - Ishid, Manabu
AU - Maeda, Yoshitomo
AU - Furuzawa, Akihiro
AU - Miyazawa, Takuya
AU - Yamane, Nobuyuki
AU - Kato, Hiroyoshi
AU - Kunieda, Hideyo
PY - 2012
Y1 - 2012
N2 - ASTRO-H is a next version of Japanese X-ray astronomy satellite for lunch in 2014. The hard X-ray telescope (HXT) on board the satellite has a cylindrical mirror housing which contains reflection circular mirror foils. In the present paper, vibration properties of the mirror foils installed in the HXT on-board a satellite were investigated. Vibration tests and FEM analysis of mirror foils installed in the part model of HXT were conducted. From the experimental results, it appeared that the mirror had resonant frequencies at 64, 73 and 118Hz. The modal shapes of 64 and 73Hz peaks showed that the maximum amplitude appeared at edges of the foil. On the other hand, vibration amplitude became maximum at the center in the modal shape of 118Hz peak. In addition, it appeared that the first peak of the edge mode decreased with increasing acceleration while the second peak had weak dependency on acceleration. These vibration behaviors are thought to be governed degree of constraint of the connections between the foil and alignment bars.
AB - ASTRO-H is a next version of Japanese X-ray astronomy satellite for lunch in 2014. The hard X-ray telescope (HXT) on board the satellite has a cylindrical mirror housing which contains reflection circular mirror foils. In the present paper, vibration properties of the mirror foils installed in the HXT on-board a satellite were investigated. Vibration tests and FEM analysis of mirror foils installed in the part model of HXT were conducted. From the experimental results, it appeared that the mirror had resonant frequencies at 64, 73 and 118Hz. The modal shapes of 64 and 73Hz peaks showed that the maximum amplitude appeared at edges of the foil. On the other hand, vibration amplitude became maximum at the center in the modal shape of 118Hz peak. In addition, it appeared that the first peak of the edge mode decreased with increasing acceleration while the second peak had weak dependency on acceleration. These vibration behaviors are thought to be governed degree of constraint of the connections between the foil and alignment bars.
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U2 - 10.1117/12.925864
DO - 10.1117/12.925864
M3 - Conference contribution
AN - SCOPUS:84871754146
SN - 9780819491442
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Space Telescopes and Instrumentation 2012
T2 - Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Y2 - 1 July 2012 through 6 July 2012
ER -