航天器环境工程
航天器環境工程
항천기배경공정
SPACECRAFT ENVIRONMENT ENGINEERING
2012年
2期
144-149
,共6页
田立成%石红%李娟%张天平
田立成%石紅%李娟%張天平
전립성%석홍%리연%장천평
空间等离子体%地磁亚暴%航天器表面充电%等效电路模型%电位主动控制%空心阴极等离子体接触器%仿真计算
空間等離子體%地磁亞暴%航天器錶麵充電%等效電路模型%電位主動控製%空心陰極等離子體接觸器%倣真計算
공간등리자체%지자아폭%항천기표면충전%등효전로모형%전위주동공제%공심음겁등리자체접촉기%방진계산
space plasma%geomagnetic sub-storm%spacecraft surface charging%equivalent circuit model%active control of potential%hollow cathode plasma contactor%simulation calculation
文章运用等效电路理论推导出随时间变化充电问题的微分方程组，用 FORTRAN 语言开发了相应的计算机模拟程序，针对强地磁亚暴空间环境分析了地球同步轨道航天器在阴影区和光照区的充电水平。最后计算讨论了采用空心阴极等离子体接触器向航天器外发射电子束作为控制航天器充电水平手段的作用效果
文章運用等效電路理論推導齣隨時間變化充電問題的微分方程組，用 FORTRAN 語言開髮瞭相應的計算機模擬程序，針對彊地磁亞暴空間環境分析瞭地毬同步軌道航天器在陰影區和光照區的充電水平。最後計算討論瞭採用空心陰極等離子體接觸器嚮航天器外髮射電子束作為控製航天器充電水平手段的作用效果
문장운용등효전로이론추도출수시간변화충전문제적미분방정조，용 FORTRAN 어언개발료상응적계산궤모의정서，침대강지자아폭공간배경분석료지구동보궤도항천기재음영구화광조구적충전수평。최후계산토론료채용공심음겁등리자체접촉기향항천기외발사전자속작위공제항천기충전수평수단적작용효과
The time-domain differential equations are derived for spacecraft charging based on the equivalent circuit theory, and a related simulation program is developed with FORTRAN language. Under the worst-case geomagnetic sub-storm conditions, the surface charging levels of spacecraft in sunlight and without sunlight are analyzed. The electron beam ejecting outward from spacecraft as a way of controlling spacecraft surface potential is also analyzed. The calculation result shows that this approach by ejecting electrons from the hollow cathode plasma can effectively keep the spacecraft surface potential under control.
