| Abstract: | The mechanism of graphite decomposition in a dissociated air stream in the presence of heterogeneous reactions on the surface and nonequilibrium evaporation for the case of a frozen boundary layer is studied in [1, 2]. Examples of the calculation of graphite decomposition in an oxygen stream with equilibrium [3] and nonequilibrium [4] chemical reactions in the boundary layer are presented in [3, 4]. The effect of the chemical reactions in the boundary layer on the rate of mass transfer and on the surface temperature with variation of the external flow parameters (p, Te) remains unexplained. The present paper is devoted to a study of the mechanism of graphite ablation over a wide range of temperatures and pressures with air flow about the body in the case of an equilibrium boundary layer. The effect of the individual components on the heat and mass transfer processes is investigated.In conclusion, the author wishes to thank N. A. Anfimov for this constant interest and valuable advice, and also I. S. Epifanovskii for fruitful discussion of the results. |
