卫星变轨发动机羽流污染的研究

针对卫星变轨发动机工作时高空羽流污染问题 ,从分子运动论出发 ,采用直接模拟MonteCarlo(DSMC)方法对轴对称羽流场进行模拟 ,发动机喷管出口参数采用内流计算的给定值。首先对计算方法进行了验证 ,然后通过计算给出羽流场压力、密度等参数 ,给出计算位于回流区内的卫星表面敏感部件的羽流污染量的方法 ,并进行了计算。

STUDY ON CONTAMINATION CAUSED BY PLUME FLOW FROM THE TRANSFER ORBITAL ROCKET OF SATELLITE

In this paper, based on molecular motion theory, the DSMC method is used to determine the contamination caused by plume flow exhausted from a transfer orbital rocket of satellite at high altitude. The flow parameters of the nozzle exit section are calculated by the inner continuum method. The parameters such as pressure and gas density of plume flow field are obtained by calculation. The method for calculating contamination amount of the sensitive elements on satellite surface in the back flow region is given.