Thermal Control System of X-ray Astronomy Satellite ASTRO-H: Current Development Status and Prospects

Date

2014-07-13

Journal Title

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Volume Title

Publisher

44th International Conference on Environmental Systems

Abstract

The current development status and prospects of the thermal control system of JAXA’s next major X-ray astronomy mission, ASTRO-H, are presented. ASTRO-H finished thermal balance tests (TBTs) with its thermal test model (TTM) in 2012 and is currently undergoing mechanical and electrical integration tests. ASTRO-H will be launched in 2015 after about one year of proto-flight model (PFM) system integration tests. The thermal mathematical models (TMMs) were correlated with the TTM TBT results, and the orbital thermal analyses were performed for 48 cases including not only the nominal cases but also the launch and contingency cases. According to the analysis results, some thermal designs such as the heater size and radiator area were changed. Also, some of the PFT hardware will be changed because of discrepancies found during and after the TTM TBTs. All of the design changes will be reflected to the PFM before system integration tests. The thermal design and the TMM will be finally verified by the TBTs in the PFM system integration tests campaign.

Description

Tucson, Arizona
Naoko IWATA, Japan Aerospace Exploration Agency (JAXA), Japan
Takashi USUI, NEC Corporation, Japan
Akihiko MIKI, NEC Corporation, Japan
Mizuho IKEDA, NEC Corporation, Japan
Takahiro YUMOTO, NIPPI Corporation, Japan
Yukari ONO, NIPPI Corporation, Japan
Kazuhiro ABE, NIPPI Corporation, Japan
Hiroyuki OGAWA, Japan Aerospace Exploration Agency (JAXA), Japan
Tadayuki TAKAHASHI, Japan Aerospace Exploration Agency (JAXA), Japan
The 44th International Conference on Environmental Systems was held in Tuscon, Arizona, USA on 13 July 2014 through 17 July 2014.

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