Thermal distortion of over 10 Meter diameter reflectors formed by truss structure

Akihiro Miyasaka, Jin Mitsugi

研究成果: Conference contribution

抄録

This paper describes how an on-board satellite large reflector structure was designed based on the thermal distortion predicted by structural analysis in coordination with thermal estimation. As the reflector consists of many small similar modules, it is possible to simplify the analytical model and the fabrication process. Module size and number are decided by estimating the surface accuracy for a 13 m aperture reflector. The maximum thermal distortion is found to be occurred during eclipses. As the module number increases, the thermal distortion increases. When the antenna system is used in 2.5. G Hz (S frequency bands), total surface accuracy needs to be 2.4 mm RMS (specified value). This requirement is satisfied by a reflector composed of 14 modules; maximum error is 1.6 mm RMS by slight repositioning the reflector.

本文言語English
ホスト出版物のタイトル32nd Thermophysics Conference
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9780000000002
出版ステータスPublished - 1997
外部発表はい
イベント32nd Thermophysics Conference, 1997 - Atlanta, United States
継続期間: 1997 6 231997 6 25

Other

Other32nd Thermophysics Conference, 1997
国/地域United States
CityAtlanta
Period97/6/2397/6/25

ASJC Scopus subject areas

  • 機械工学
  • 航空宇宙工学
  • 凝縮系物理学

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