ABSTRACT
The complexity of radiating flow calculations and a wide variety of conditions for which calculations are needed make it a common practice that instead of exact numerical input results, approximate analytical expressions are used in practical design work. A useful approach to the calculation of radiative heat transfer distributions was developed in the work of M. V. Brykin concerning axisymmetric blunted bodies in airflows. A reasonable engineering approximation for the nose-region radiative transfer distribution may also be constructed for three-dimensional configurations, even though in this case no unique correspondence between θs and θw exists. E. Z. Apshtein et al. were able to demonstrate the applicability to three-dimensional radiating flow problems of the so-called "rule of areas" established in the earlier work of Apshtein, N. N. Pilyugin and N. G. Kolotilova. According to the rule, integrated radiative fluxes to three- dimensional entry bodies differ little from the axisymmetric bodies with the same distribution of areas of cross-sections perpendicular to freestream velocity vector.
