Radiative Transfer Through Carbon Ablation Layers
Abstract
The composition, emittance, and transmittance of carbon plasmas have been calculated for temperatures of 3000 and 5000°K, thicknesses from 0.01 to 1.0 cm, and pressures from 0.1 to 10.0 atmospheres. The carbon plasmas are assumed to be isothermal and in local thermodynamic equilibrium. The radiation includes molecular bands, atomic lines, and continuum processes. The calculations consider molecular carbon molecules, atomic and singly ionized carbon atoms, and electrons. The emittance and transmittance results are applied to a simple model of the ablation layer in the stagnation shock layer for two cases: (1) Jupiter entry and (2) Earth entry. The results show that the molecular carbon bands are most effective in blocking the high-energy stagnation shock layer radiation when the ablation shock-layer temperature is low. For high ablation-layer temperatures, the photoionization process in atomic carbon becomes very effective in reducing the radiation to the vehicle. © 1973.
Recommended Citation
H. F. Nelson, "Radiative Transfer Through Carbon Ablation Layers," Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 13, no. 5, pp. 427 - 445, Elsevier, Jan 1973.
The definitive version is available at https://doi.org/10.1016/0022-4073(73)90005-8
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0022-4073
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Elsevier, All rights reserved.
Publication Date
01 Jan 1973
Comments
National Science Foundation, Grant None