A study of techniques for preparing camphor and naphthalene models for experimental research on sublimation cooling in hypersonic flow. A vacuum-sintering technique is developed that yields uniform, homogeneous, clear, and easily machinable samples. These samples are well suited for accurate reproducible measurements of the history of subliming surfaces and will provide reliable data. A method for accurate measurement of surface temperatures during the course of the destructive-phase-change mass-transfer process is proposed and partly developed.
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