Vibration properties of hard x-ray telescope on board satellite

Tatsuro Kosaka; Takeyuki Igarashi; Hisamitsu Awaki; Keiji Ogi; Keitaro Itoh; Yoshitomo Maeda; Manabu Ichida; Akihiro Furuzawa; Takuya Miyazawa; Hideyo Kunieda

doi:10.1117/12.856846

29 July 2010 Vibration properties of hard x-ray telescope on board satellite

Tatsuro Kosaka, Takeyuki Igarashi, Hisamitsu Awaki, Keiji Ogi, Keitaro Itoh, Yoshitomo Maeda, Manabu Ichida, Akihiro Furuzawa, Takuya Miyazawa, Hideyo Kunieda

Author Affiliations +

Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77323G (2010) https://doi.org/10.1117/12.856846
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

ASTRO-H is the new Japanese X-ray astronomy satellite for launch in 2013. HXT on board the satellite has a mirror housing which is a cylindrical case and contains reflection mirror foils, which are constrained by alignment bars. In order to investigate vibration properties of HXT on board the satellite, vibration tests and FEM analyses were conducted. From the results of x-vibration test, it was found that there were no resonant frequencies at frequency less than 120 Hz. It also appeared that foils move along grooves of alignment bars when the housing was vibrated because kinetic connection between foils and alignment bars is only friction force. From the simulated results, this loose connection used in the actual HXT housing is useful to suppress a strong resonance at 51Hz predicted by supposing tight connections such as adhesiveness. As for z-vibration properties, vibration property of the housing was complicated since foils leap when zacceleration becomes larger than 1G. However it could be confirmed that the distinct resonant peaks did not appear at frequency less than 200 Hz. From these results, it was found that HXT housing had not any resonant frequencies less than 120 Hz, which is the maximum frequency of sinusoidal vibrations applied when launched.

Citation Download Citation

Tatsuro Kosaka, Takeyuki Igarashi, Hisamitsu Awaki, Keiji Ogi, Keitaro Itoh, Yoshitomo Maeda, Manabu Ichida, Akihiro Furuzawa, Takuya Miyazawa, and Hideyo Kunieda "Vibration properties of hard x-ray telescope on board satellite", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77323G (29 July 2010); https://doi.org/10.1117/12.856846

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Satellites

Finite element methods

Mirrors

Sensors

Mathematical modeling

X-ray telescopes

Hard x-rays

Show All Keywords

Keywords/Phrases

Search In:

Publication Years