空间维修是随着载人航天技术的成熟而出现的一种特殊勤务活动。其应用范围也十分广泛,如对各种航天器和航天设施进行回收、修复、更换部件、补充燃料等。空间维修要求有很高的技术保证,首先要有长时间在空间停留的载人航天器,就目前而言,还只有航天飞机和航天站;其次被维修的航天器要适合空间维修,目 Space maintenance is a special service activity that emerges with the development of manned space technology. Its range of applications is also very wide, such as recycling of various spacecraft and space facilities, repair, replacement parts, refueling and so on. Space maintenance requires a high degree of technical assurance, first of all have to remain in space for a long time manned spacecraft, for now, only the space shuttle and space station; followed spacecraft to be repaired space maintenance, head