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http://dx.doi.org/10.5139/JKSAS.2008.36.11.1056

Detailed Analysis of Thrust Plume and Satellite Base Region Interaction  

Kim, Jae-Gang (한국과학기술원 항공우주공학과 대학원)
Kwon, Oh-Joon (한국과학기술원 항공우주공학과)
Lee, Kyun-Ho (한국항공우주연구원)
Kim, Su-Kyum (한국항공우주연구원)
Yu, Myoung-Jong (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.11, 2008 , pp. 1056-1062 More about this Journal
Abstract
The interaction between thrust plume and satellite base region was investigated by using direct simulate Monte-Carlo calculations. For the accurate simulation of N2 and H2 collisions and rotation-translation transition, a variable soft-sphere model and a recent rotational relaxation model of N2 and H2 were used. For the investigation of the interaction between thrust plume and base region, the number density distribution for each species, translational and rotational temperature distributions, heat flux, and pressure were examined by direct simulation of Monte-Carlo calculations. It was found that most of the surface properties are affected by H2 collisions and a strong non-equilibrium state is observed at the base region. It was demonstrated that an accurate model is needed to simulate H2 collisions and the rotation-translation transition. The results by the present calculation are more accurate than previous direct simulation Monte-Carlo calculations because more accurate rotational relaxation models were used in simulating the inelastic collisions.
Keywords
Direct simulation Monte-Carlo; Thrust plume; Base region; Rotational relaxation;
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