Thermophysical Properties of High-Thermal-Conductivity Graphite Sheets for Spacecraft Thermal Design

H. Nagano, A. Ohnishi, Yuji Nagasaka

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Thermophysical properties of a new material - a graphite sheet, which has characteristics of high thermal conductivity, anisotropy, lightweight and flexibility - have been measured in order to apply this sheet to a spacecraft thermal control material. The following measurements were performed: 1) The thermal diffusivities in the in-plane and out-of-plane directions were measured over the temperature range from 100 to 350 K using a laser heating ac calorimetric method. 2) The specific heat and the total hemispherical emittance were measured over the temperature range from 173 to 375 K using a transient calorimetric method. 3) The solar absorptance was measured using a spectroscopic method for angles of incidence ranging from 5 to 60 deg. Additionally, the thermal conductivities and the specific thermal conductivities were calculated using the measured results, and the high potential of this graphite sheet as a material for spacecraft thermal control was confirmed.

Original languageEnglish
Pages (from-to)347-353
Number of pages7
JournalJournal of Thermophysics and Heat Transfer
Volume15
Issue number3
Publication statusPublished - 2001 Jul

Fingerprint

Graphite
thermophysical properties
Spacecraft
Thermal conductivity
spacecraft
thermal conductivity
Thermodynamic properties
graphite
Laser heating
absorptance
laser heating
Thermal diffusivity
thermal diffusivity
emittance
Specific heat
flexibility
Anisotropy
incidence
specific heat
Temperature

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Cite this

Thermophysical Properties of High-Thermal-Conductivity Graphite Sheets for Spacecraft Thermal Design. / Nagano, H.; Ohnishi, A.; Nagasaka, Yuji.

In: Journal of Thermophysics and Heat Transfer, Vol. 15, No. 3, 07.2001, p. 347-353.

Research output: Contribution to journalArticle

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