Fabrication and testing of a passive re-deployable radiator for Autonomous thermal control

Hosei Nagano, Kan Matsumoto, Akira Ohnishi, Ken Higuchi, Yuji Nagasaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the development of a lightweight 100W-class re-deployable radiator with environmentadaptive functions. This radiator, reversible thermal panel (RTP), which consists of flexible high thermal conductive graphite sheets and a single crystal shape memory alloy as a passive reversible actuator, changes its function from a radiator to a solar absorber by deploying/stowing the reversible fin upon changes in the heat dissipation and thermal environment. A deployment/stowing test in atmospheric condition and a thermal vacuum test were conducted. The fin deployment angle could be changed from 0 deg to 140 deg with the change of the RTP temperature from -40 C to +40 C in the deployment/stowing test using a constant temperature chamber. Autonomous thermal control function was demonstrated in the thermal vacuum test although the fin could not be entirely stowed under cold condition.

Original languageEnglish
Title of host publicationSpace Technology and Applications International Forum, STAIF 2007, including Co-located Conferences
Pages19-26
Number of pages8
DOIs
Publication statusPublished - 2007 Dec 1
EventSpace Technology and Applications International Forum: Space Renaissance: Inspiring the Next Generation, STAIF-2007 - Albuquerque, NM, United States
Duration: 2007 Feb 112007 Feb 15

Publication series

NameAIP Conference Proceedings
Volume880
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherSpace Technology and Applications International Forum: Space Renaissance: Inspiring the Next Generation, STAIF-2007
CountryUnited States
CityAlbuquerque, NM
Period07/2/1107/2/15

Keywords

  • Autonomous thermal control
  • Deployable radiator
  • High thermal conductivity graphite sheet
  • Single crystal shape memory alloy
  • Spacecraft thermal control

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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