Abstract
A three-dimensional model of radiation of rocket exhaust plumes is given, which is based on the Monte Carlo simulation method. Two problems associated with the determination of spectral directional radiation of rocket exhaust plumes are treated, namely, the self-radiation of multiple plumes and the scattering of solar radiation incident on a single or multiple plume at an arbitrary angle by the condensed phase of the combustion products. The suggested model enables one to calculate the spectral emissivity with averaging of the rotational structure of molecular emission spectrum by diatomic and triatomic molecules of combustion products in the spectral range from 0.1 to 10 μm. The results are given of calculations of the spectral and integral emissivity of light-scattering rocket exhaust plumes of various configurations, containing Al2O3 particles with an average radius of 2 μm, in the infrared spectral region of 2-5 μm.
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