宇航员完成修复阿尔法磁谱仪的第二阶段

NASA astronaut Andrew Morgan is seen here tethered to the Starboard-3 truss segment work site during the second spacewalk to repair the International Space Station’s cosmic particle detector, the Alpha Magnetic Spectrometer. During the 6.5 hour spacewalk, Morgan and Station Commander Luca Parmitano of the European Space Agency the two successfully cut eight stainless steel tubes, including one that vented the remaining carbon dioxide from the old cooling pump. The crew members also prepared a power cable and installed a mechanical attachment device in advance of installing the new cooling system.

This work clears the way for Parmitano and Morgan’s next spacewalk in the repair series Monday Dec. 2. The plan is to bypass the old thermal control system by attaching a new one off the side of AMS during the third spacewalk, and then conduct leak checks on a fourth spacewalk.

Image Credit: NASA

美国国家航空航天局宇航员安德鲁·摩根在第二次太空行走中被拴在右面3桁架部分工作地点，以修复国际空间站的宇宙粒子探测器阿尔法磁谱仪。在6.5小时的太空行走中，摩根和欧洲航天局的空间站指挥官卢卡·帕尔米塔诺成功地切断了8根不锈钢管，其中一根用于从旧的冷却泵中排放剩余的二氧化碳。在安装新的冷却系统之前，机组人员还准备了一根电力电缆并安装了一个机械连接装置。

这项工作为帕尔米塔诺和摩根在12月2日星期一下一次太空行走的修复系列中扫清了道路。计划是绕过旧的热控制系统，在第三次太空行走时在AMS一侧安装一个新的热控制系统，然后在第四次太空行走时进行泄漏检查。

图片来源:NASA