转移轨道航天器深层充放电效应仿真分析  

Simulation of Deep Dielectric Charging for Transfer Orbit Satellite

作　　者：苏京 张丽新 刘刚 周博 潘阳阳 曹康丽 SU Jing;ZHANG Lixin;LIU Gang;ZHOU Bo;PAN Yangyang;CAO Kangli(Shanghai Institute of Satellite Equipment,Shanghai 200240,China)

机构地区：[1]上海卫星装备研究所,上海200240

出　　处：《上海航天》2018年第3期74-80,共7页Aerospace Shanghai

基　　金：国家重点研发计划资助项目(2017YFA0204600);国家自然科学基金(51603123)

摘　　要：为研究转移轨道卫星介质深层动态充电规律特征,针对卫星动态辐射环境的特点,基于FLUMIC思想,建立辐射带动态电子环境模式。针对动态辐射环境下星上介质深层充电的特征,使用辐射诱导电导率(RIC)模型和Geant4建立了适用于转移轨道卫星动态环境下的介质深层充电应用模型。首次对地球同步转移轨道(GTO)和嫦娥一号卫星调相轨道运行过程中介质深层充电情况进行了仿真分析。结果表明:转移轨道卫星在运行时会多次穿越辐射带区域,电子通量存在明显波动,这种波动性反映在材料的充电电位变化中。材料峰值充电电位分别为-2 846V和-4 110V,介质内部平衡电场均超过106 V/m,存在内放电风险,需要在工程设计中进行针对性防护。In order to acquire the charging characteristics and assure the long-period stability of electronic devices in transfer orbit satellites,a model is established based on FLUMIC model of ESA about electrons in radiation belt,which is used in dynamic electron environment evaluation.A model based on RIC model and Geant4 is also provided in computer simulation to analyze the mechanism and physical process of internal charging.The features of GTO and phasing orbit internal charging are analyzed for the first time.It can be concluded that transfer orbit satellites experience severe environment change when passing through the radiation belt,while instantaneous flux shows obvious fluctuations.This fluctuation can increase the charged potential and the risk of internal charging.It is shown that the internal charging risk in the center of radiation belt is higher than that in other areas in normal case.

关 键 词：转移轨道卫星 地球同步转移轨道 调相轨道 高能电子 深层充放电 电子通量 

分 类 号：V250.3[一般工业技术—材料科学与工程] V524.3[航空宇航科学与技术—航空宇航制造工程]