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An analytic investigation was made to show the extent of correlation of the exact oblique shock parameters that may be accomplished by means of similarity parameters suggested by approximate theory. The exact theory for the inviscid flow of a perfect gas was calculated for Mach numbers of 1.1 to 40, ratios of specific heats from 1 to 5/3, and angles of attack from 0° to shock detachment. From consideration of the approximate theory and the concept of effective ratio of specific heats, the oblique shock correlations were found to be useful for the rapid calculation of many flow parameters for an equilibrium real gas. Some useful correlations are also given for the case of isentropic expansion around a sharp corner.
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