In order to obtain the heat loss and temperature distribution of the LHT-200 Hall thruster under 12.5 kW rated working condition,FEM(Finite Element Method)analysis and thermal balance test are adopted to verify the heat loss itera-tively and analyze the thermal characteristics under rated condition.The results show that when the total heat loss is 2 700 W,that is,the proportion of total power is 21.6%,the temperature simulation results are the closest to the measurements.Mean-while,the maximum error is 6.3%at the thruster housing.The measurement results show that the highest temperature of the thruster is the internal wrapping post and inner support,which are 318℃and 304℃respectively.In addition,the tempera-ture of the components such as magnetic base,diffusing panel and thruster housing near the outside is basically in the range of 150～210℃.Subsequently,the surfaces of the external components can be treated to improve the emission coefficient to further reduce the overall temperature of the LHT-200 Hall thruster.Research results can provide engineering guideline for thermal design improvement,and provide initial simulation boundaries for thermal analysis of same type of domestic Hall thrusters.
关键词
霍尔推力器/温度分布/热特性/有限元分析
Key words
Hall thruster/temperature distribution/thermal characteristics/finite element analysis
维普
万方数据