TY - JOUR
T1 - Development of a lightweight deployable/stowable radiator for interplanetary exploration
AU - Nagano, Hosei
AU - Ohnishi, Akira
AU - Nagasaka, Yuji
N1 - Funding Information:
The authors are grateful to the PLANET-C project group in Institute of Space and Astronautical Science , and the Japan Society for the Promotion of Science (No. 18860091 ) for their financial support.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/11
Y1 - 2011/11
N2 - This paper experimentally and analytically evaluates the heat rejection/retention performance of a lightweight 100 W-class re-deployable radiator with environment-adaptive 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. The RTP was considered as a candidate methodology for thermal control of Venus mission, PLANET-C, in order to save survival heater power. An RTP prototype was tested and evaluated. An analytical thermal model of the RTP was also developed, and basic performances of the RTP were evaluated. Thermal performance of the RTP when applied to the longwave infrared camera of the PLANET-C was evaluated with an analytical thermal model as functions of fin deployment directions and rear surface properties of the RTP's fin. The analytical results showed that the RTP can save survival heater power in comparison to a conventional radiator.
AB - This paper experimentally and analytically evaluates the heat rejection/retention performance of a lightweight 100 W-class re-deployable radiator with environment-adaptive 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. The RTP was considered as a candidate methodology for thermal control of Venus mission, PLANET-C, in order to save survival heater power. An RTP prototype was tested and evaluated. An analytical thermal model of the RTP was also developed, and basic performances of the RTP were evaluated. Thermal performance of the RTP when applied to the longwave infrared camera of the PLANET-C was evaluated with an analytical thermal model as functions of fin deployment directions and rear surface properties of the RTP's fin. The analytical results showed that the RTP can save survival heater power in comparison to a conventional radiator.
KW - Graphite sheet
KW - High-thermal-conductivity radiator
KW - Spacecraft thermal control
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U2 - 10.1016/j.applthermaleng.2011.06.012
DO - 10.1016/j.applthermaleng.2011.06.012
M3 - Article
AN - SCOPUS:80052021421
SN - 1359-4311
VL - 31
SP - 3322
EP - 3331
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 16
ER -