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Proposal of periodic-heating heterodyne interferometry and evaluation of nano-scale thermal dimensional stability of low thermal expansion material for spacecraft

Research Project

Project/Area Number 16K14509
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Aerospace engineering
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

OGAWA HIROYUKI  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (60311172)

Co-Investigator(Kenkyū-buntansha) 長野 方星  名古屋大学, 工学研究科, 教授 (10435810)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords線膨張係数 / 熱伝導率 / 天文衛星 / 熱ひずみ / 光ヘテロダイン干渉計 / 熱的寸法安定性 / 熱物性 / 宇宙機熱制御
Outline of Final Research Achievements

In order to achieve a high precise thermal strain design of spacecraft, a simultaneous measurement for a coefficient of thermal expansion (CTE) and a thermal diffusivity has been proposed, and its feasibility was experimentally examined. A new measurement method which consists of a heterodyne interferometry which has a good advantage in high wavelength resolution for the CTE, and periodic heating method for the thermal diffusivity has been developed. First, a measurement accuracy was evaluated with a single crystal silicon. Second, the temperature dependence of the CTE for carbon fiber reinforced plastic was measured, finally, a simultaneous measurement of the CTE and the thermal diffusivity for Al alloy was conducted and its high-accurate measurement was demonstrated.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

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