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摘要

NASA managers like to describe the upcoming 12a.l International Space Station assembly mission as rewiring your house while you live in it. But this abode has far more moving parts, all flying about 17,000 mph., 250 mi. high. Before the space shuttle Discovery departs from its scheduled STS-116 visit early in December, the 10 men and women of the combined shuttle and ISS crews plan to set in motion the first of the giant rotating ISS solar array "wings," and run the power it generates into the station grid. The 270-ft. structure will windmill around the main ISS truss on a huge tooth-and-cog gear to keep its power-generating cells in the best possible alignment with the Sun, while secondary rotating joints keep them properly feathered into the sunlight.
机译:NASA经理喜欢将即将到来的12a.l国际空间站组装任务描述为在您居住的房屋中重新布线。但是这个居所有更多的活动部件,全部以250英里/小时的速度飞行,时速约17,000英里。高。在发现号航天飞机于12月初离开计划的STS-116出发之前,航天飞机和ISS乘员组的10名男女计划启动第一个巨型旋转ISS太阳电池阵列“机翼”,并运行它产生的电能进入电站电网。 270英尺该结构将风车绕在大型ISS桁架上,并带有巨大的齿齿轮,以使其发电单元与太阳尽可能保持最佳对准,而次级旋转接头则使它们适当地顺着阳光直射。

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