关键词: 姿控火箭发动机;喷管气流;高空环境;羽流;航天器污染

Abstract: The plume contamination has several patterns with respect to different contaminational surfaces The prediction of thermal contamination and deposition due to the impingement of the molecular of the back flow region of the nozzle were discussed The program based on the theory of molecule movements and statistical mechanics was composed with analytical methods and was applied to several different conditions, with computational results in conformity with analysis in theory The purpose of this research is to provide a good foundation for the rocket engine design and scientific experiments

Key words: Attitude control rocket engine;Nozzle flow;High altitude environment;Plume;Spacecraft contamination