国際宇宙ステーションのインスタグラム(iss) - 10月16日 19時57分

"That was a long but rewarding day. My crewmate took this shot, thanks Butch!” #Reid

Photo credit: 265B5555 NASA/Butch Wilmore

NASA Astronauts Reid Wiseman and Butch Wilmore wrapped up a 6-hour, 34-minute spacewalk at 2:50 p.m. EDT yesterday, Wednesday October 15 2014. This was spacewalk was the 183rd in support of station assembly and maintenance. This was the first spacewalk for Wilmore. It was the second spacewalk for Wiseman, who joined ESA Flight Engineer Alexander Gerst of the European Space Agency for a 6-hour, 13-minute spacewalk on October 7 2014.

The highest priority task of the spacewalk was to replace a failed power regulator, known as a sequential shunt unit, which failed in May. The unit regulates power from the 3A solar array. The station has since operated normally on seven of its eight power channels, but replacing the unit provides the station team with more flexibility and redundancy in managing the primary power system and assures enough power for all the planned science. Timing was a factor for the replacement of the sequential shunt unit. The spacewalkers needed to remove the failed suitcase-sized unit and install its replacement while the station passed through the Earth’s shadow and electricity was not being generated by the solar array.

The remainder of the spacewalk focused on moving equipment installed on the port side of the station’s truss in preparation for the relocation of the Leonardo Permanent Multipurpose Module, or PMM, currently expected to take place next summer. The relocation of the PMM and the installation of international docking adapters scheduled to be delivered to the complex in 2015 will configure the station for future commercial crew vehicles and provide an additional berthing port for commercial cargo spacecraft. NASA PAO

#nasa #nasajsc #spacestation #internationalspacestation #explore #exploration #Exp41 #Earth #USEVA28 #spacewalk

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