ABSTRACT
This chapter reviews the most important radiative heating studies performed for hypersonic flows of air, of a CO2-N2-Ar mixture, and of a H-He mixture, with and without radiation blockage effects due to the combination of ablation gases with the products of their chemical interaction with the freestream gas. V. V. Gorskii, Yu. A. Plastinin, and Surchikov presented a numerical analysis of the problem of hypersonic, viscous, nonadiabatic and radiating airflow about an ablating spherically blunted body equipped with a glass-graphite heat shield. The chapter discusses the effect of radiative cooling and of the boundary layer and demonstrates a substantial increase of the radiative heat flux to the surface of a highly blunted body. F. B. Yurevich studied the presence of microparticle scatterers in the ablation products when estimating the blockage of radiation issued by the high-temperature shock layer in the stagnation region near a carbon-graphite body.
