利用并联氙气瓶温差补偿航天器质心偏移的可行性研究  

Feasibility study of spacecraft gravity center offset compensation by intentional xenon temperature control

作　　者：王珏[1] 王敏[1] 郭婷婷 仲小清[1] 温正[1] 魏鑫[1] WANG Jue;WANG Min;GUO Tingting;ZHONG Xiaoqing;WEN Zheng;WEI Xin(Institute of Telecommunication and Navigation Satellites,China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]中国空间技术研究院通信与导航卫星总体部,北京100094

出　　处：《中国空间科学技术》2022年第2期39-45,共7页Chinese Space Science and Technology

基　　金：民用航天技术预先研究项目(D010110)。

摘　　要：在以往航天器研制中,一般通过增加配重的方式对航天器质心偏移进行补偿。这种质心补偿方式占用了运载火箭承载能力资源,降低了航天器的有效承载能力。针对常规质心补偿方式的弱点,利用电推进航天器上氙气高密度填充的特点,提出了一种通过氙气瓶温度控制对航天器质心偏移进行补偿的方法,减少了航天器配重的使用需求。氙气瓶温差对航天器质心偏移的补偿能力与氙气质量占比、氙气瓶质心间距等正相关。在典型航天器应用条件下,利用氙气瓶温差可对几十毫米量级的航天器质心偏移进行补偿,补偿误差最低可达到2 mm左右,可为电推进航天器的质心控制提供参考。The gravity center offset of spacecraft was generally compensated by adding some balancing weight.The balancing weight was not able to provide other support for spacecraft mission,thus it reduced the loading efficiency of spacecraft.For the spacecraft equipped with high density gas cylinders,e.g.xenon,a new method was raised to compensate the offset of gravity center of spacecraft by the intentional temperature control of xenon cylinders,so as to reduce the use of balancing weight.The gravity center offset compensation ability influenced by the temperature control of xenon cylinders was positively related to xenon mass ratio and xenon cylinders′centroid spacing.Under the condition of application for spacecraft,the gravity center offset with magnitude order of tens of millimeters can be compensated by the temperature control of xenon cylinders and the minimum compensation error was approximately 2 mm.References for gravity center compensation of electric propulsion spacecraft can be provided.

关 键 词：航天器 质心补偿 电推进 氙气瓶 温度控制 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]