An investigation has been made into the ability of a method of integral relations to calculate inviscid, 0° angle of attack, radiative heating distributions over blunt, sonic corner bodies for some representative outer planet entry conditions. Comparisons have been made with a more detailed numerical method, a time asymptotic technique, using the same equilibrium chemistry and radiation transport subroutines. An effort to produce a second-order approximation (two-strip) method of integral relations code to aid in this investigation is also described and a modified two-strip routine is presented. Results indicate that the one-strip method of integral relations cannot be used to obtain accurate estimates of the radiative heating distribution because of its inability to resolve thermal gradients near the wall. The two-strip method can sometimes be used to improve these estimates;however, the two-strip method has only a small range of conditions over which it will yield significant improvement over the one-strip method.
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