Space Stations

Critical Space Station Spacewalk a Success

By Marc Boucher
Status Report
September 5, 2012
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Critical Space Station Spacewalk a Success
ISS spacewalk.

International Space Station program managers provide analysis following the successful 6 hour, 28 minute follow-on EVA performed by Expedition 32 spacewalkers Suni Williams and Aki Hoshide today.
Williams and Hoshide successfully installed a replacement Main Bus Switching Unit (MBSU) after cleaning and lubricating the power relay unit’s bolts and posts. The MBSU is routing power from the space station’s solar arrays to components of the orbiting laboratory. The spacewalking duo also successfully removed and replaced a camera on the space station’s Canadarm2 robotic arm. A “frozen” bolt prevented the duo from completing these tasks during their spacewalk last week. The EVA was critical as the space station was only running at 75% power capacity and with the repair is now back to 100%.

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