为更换国际太空站太阳能动力系统的老旧电池,2名太空人10月6日完成太空漫步,7小时内装上两枚新的锂离子电池,并搬走一枚旧式电池,过程顺利。
这批新电池是太空站太阳能动力网的组件,重180公斤,体积等于半个电冰箱。太空人自2017年起升级电池系统,目前进度过半。
这一波换电池行动,因为地点在太空站庞大外壳的极限位置,所以特别困难。太空站长17公尺的机械臂无法伸到那里,太空人不得自己搬电池往返。
也因为如此,这次要用6枚锂离子电池取代12枚旧式镍氢电池,才要这么久的太空漫步。
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