The six-and-a-half hour spacewalk is
scheduled to begin about 8 a.m. EDT.
Working on the port side of the orbiting complex's backbone, or truss, Expedition 48 Commander Jeff Williams and Flight Engineer Kate Rubins of NASA will retract a thermal radiator that is part of the station's cooling system. The radiator is a backup that had been deployed previously as part of an effort to fix an ammonia coolant leak. They'll also tighten struts on a solar array joint, and install the first of several enhanced high-definition television cameras that will be used to monitor activities outside the station, including the comings and goings of visiting cargo and crew vehicles.
Working on the port side of the orbiting complex's backbone, or truss, Expedition 48 Commander Jeff Williams and Flight Engineer Kate Rubins of NASA will retract a thermal radiator that is part of the station's cooling system. The radiator is a backup that had been deployed previously as part of an effort to fix an ammonia coolant leak. They'll also tighten struts on a solar array joint, and install the first of several enhanced high-definition television cameras that will be used to monitor activities outside the station, including the comings and goings of visiting cargo and crew vehicles.
This will be the 195th spacewalk in
support of space station assembly and maintenance, the fifth of
Williams' career and the second for Rubins. As was the case for their
first spacewalk together Aug. 19, Williams will be designated as
extravehicular crew member 1 (EV1), wearing a spacesuit with a red
stripe, while Rubins will be EV2, wearing a suit with no stripes.
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