Abstract
The effects of non-grey self-absorption and energy loss for blunt-body flows during superorbital reentry are considered. The air spectral absorption coefficients are represented approximately by a two-band (level) model and a six-band model. A tangent-slab approximation is used for radiation transport calculations. The solutions of the inviscid flow field for the stagnation and nonstagnation regions are formulated separately. A similarity solution is obtained for the stagnation region and a streamtube method is used for the nonstagnation region. Results obtained for typical superorbital reentry environmental conditions indicate that both non-grey self-absorption and energy loss have very significant effects on the flow field and wall heat fluxes.
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