Study on a reversible thermal panel for spacecraft (evaluation of efficiency and reliability of new autonomous thermal control device)

Hosei Nagano, Akira Ohnishi, Yuji Nagasaka, Akira Nagashima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The current spacecraft trend toward high density packing of the payload electronics and increased waste heat flux will require the development of lightweight high thermal conductive materials and innovative thermal control techniques. Additionally, new challenging missions will require the new techniques to adapt a variety of environmental conditions. In this study, a new passive thermal control device - a Reversible Thermal Panel (RTP) based on high thermal conductive graphite sheets and shape memory alloy was proposed. The RTP changes its function reversibly from radiator to solar absorber by deploying/stowing the reversible fin. The thermal analyses were conducted to predict the fundamental thermal performances of the RTP. A prototype model of the RTP based on the graphite sheets and aluminum alloys was fabricated, and the thermal vacuum test was conducted with the reversible fin deployed and stowed. The variability of thermal performances of the RTP by deploying/stowing the reversible fin was demonstrated. Comparison of the predicted results with test results indicated a good agreement.

Original languageEnglish
Pages (from-to)2117-2125
Number of pages9
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume70
Issue number696
Publication statusPublished - 2004 Aug
Externally publishedYes

Fingerprint

control equipment
Spacecraft
spacecraft
fins
evaluation
thermal vacuum tests
graphite
waste heat
packing density
radiators
shape memory alloys
payloads
aluminum alloys
heat flux
absorbers
prototypes
Hot Temperature
trends
Graphite
Solar absorbers

Keywords

  • Anisotropy
  • Deployable Rediator
  • Graphite Sheet
  • Radiator/Absorber
  • Reversible Thermal Panel
  • Spacecraft Thermal Control

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "The current spacecraft trend toward high density packing of the payload electronics and increased waste heat flux will require the development of lightweight high thermal conductive materials and innovative thermal control techniques. Additionally, new challenging missions will require the new techniques to adapt a variety of environmental conditions. In this study, a new passive thermal control device - a Reversible Thermal Panel (RTP) based on high thermal conductive graphite sheets and shape memory alloy was proposed. The RTP changes its function reversibly from radiator to solar absorber by deploying/stowing the reversible fin. The thermal analyses were conducted to predict the fundamental thermal performances of the RTP. A prototype model of the RTP based on the graphite sheets and aluminum alloys was fabricated, and the thermal vacuum test was conducted with the reversible fin deployed and stowed. The variability of thermal performances of the RTP by deploying/stowing the reversible fin was demonstrated. Comparison of the predicted results with test results indicated a good agreement.",
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AU - Nagano, Hosei

AU - Ohnishi, Akira

AU - Nagasaka, Yuji

AU - Nagashima, Akira

PY - 2004/8

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N2 - The current spacecraft trend toward high density packing of the payload electronics and increased waste heat flux will require the development of lightweight high thermal conductive materials and innovative thermal control techniques. Additionally, new challenging missions will require the new techniques to adapt a variety of environmental conditions. In this study, a new passive thermal control device - a Reversible Thermal Panel (RTP) based on high thermal conductive graphite sheets and shape memory alloy was proposed. The RTP changes its function reversibly from radiator to solar absorber by deploying/stowing the reversible fin. The thermal analyses were conducted to predict the fundamental thermal performances of the RTP. A prototype model of the RTP based on the graphite sheets and aluminum alloys was fabricated, and the thermal vacuum test was conducted with the reversible fin deployed and stowed. The variability of thermal performances of the RTP by deploying/stowing the reversible fin was demonstrated. Comparison of the predicted results with test results indicated a good agreement.

AB - The current spacecraft trend toward high density packing of the payload electronics and increased waste heat flux will require the development of lightweight high thermal conductive materials and innovative thermal control techniques. Additionally, new challenging missions will require the new techniques to adapt a variety of environmental conditions. In this study, a new passive thermal control device - a Reversible Thermal Panel (RTP) based on high thermal conductive graphite sheets and shape memory alloy was proposed. The RTP changes its function reversibly from radiator to solar absorber by deploying/stowing the reversible fin. The thermal analyses were conducted to predict the fundamental thermal performances of the RTP. A prototype model of the RTP based on the graphite sheets and aluminum alloys was fabricated, and the thermal vacuum test was conducted with the reversible fin deployed and stowed. The variability of thermal performances of the RTP by deploying/stowing the reversible fin was demonstrated. Comparison of the predicted results with test results indicated a good agreement.

KW - Anisotropy

KW - Deployable Rediator

KW - Graphite Sheet

KW - Radiator/Absorber

KW - Reversible Thermal Panel

KW - Spacecraft Thermal Control

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