高エンタルピー衝撃風洞の熱負荷に関する基礎検討 : 第2報, 熱防御材試験と壁面温度解析

概要

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A numerical flow analysis method combined with a heat conduction analysis of the shock tube wall was presented in the first report. Results of thermal protection testing which were carried out at the condition of 25 MJ/kg stagnation enthalpy using a high enthalpy shock tunnel and its surface temperature analysis are presented in this paper. Two kinds of materials, nickel and cobalt-based super alloy, were selected as materials of thermal protection. Though the protection made of cobalt-based super alloy which had been selected because of its strength and toughness at high temperature was severely damaged after only one shot, the protection made of nickel withstood a total of 9 shots. The calculation results of the surface temperature analysis showed good agreement with the results of observations after the shots. The friction factor model which considered the high temperature generated by the passage of a reflect shock wave gave good results for the surface temperature.
社団法人日本機械学会の論文
1999-02-25