THE PREPARATION OF CAMPHOR MODELS FOR WINDTUNNEL SUBLIMATION STUDIES; PRELIMINARY RESULTS ON THE SUBLIMATION OF A POINTED CONE
RAND CORP SANTA MONICA CA
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A preliminary study of techniques for the preparation of camphor and naphthalene models for experimental research on sublimation cooling in hypersonic flow led to the development of a vacuum sintering technique which yields uniform, homogeneous, clear and easily machinable samples. It is felt, on the basis of static and wind tunnel tests, as well as on the basis of these general observations, that models prepared in this fashion are well suited for accurate reproducible measurements of the history of subliming surfaces and that they 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. If it proves to be totally successful, relatively complete and valuable information on the complex flow field will be obtainable with relatively simple facilities and techniques.
- Test Facilities, Equipment and Methods
- Military Aircraft Operations