Headlines > News > Williams, Hoshide Complete MBSU Installation

Williams, Hoshide Complete MBSU Installation

Published by Klaus Schmidt on Wed Sep 5, 2012 6:41 pm via: NASA
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Flight Engineers Suni Williams and Aki Hoshide completed their second spacewalk in less than a week at 1:45 p.m. EDT Wednesday. They completed the installation of a Main Bus Switching Unit (MBSU) that was hampered last week by a possible misalignment and damaged threads where a bolt must be placed. They also installed a camera on the International Space Station’s robotic arm, Canadarm2.

Flight Engineer Joe Acaba operated the Canadarm2 and monitored the spacewalkers from inside the International Space Station. Hoshide rode the Canadarm2 attached to a portable foot restraint to the MBSU worksite.

Wednesday’s spacewalk lasted 6 hours and 28 minutes ending at 1:34 p.m.

Last week’s spacewalk lasted eight hours and 17 minutes making it the third longest in U.S. spaceflight history. It was originally scheduled for 6.5 hours before mission controllers and the astronauts struggled to install the MBSU.

Wednesday’s spacewalk is the third for Expedition 32. Commander Gennady Padalka and Flight Engineer Yuri Malenchenko completed a five-hour, 51-minute excursion on Aug. 20. They worked to move a Strela-2 cargo boom which allows the Pirs docking compartment to be undocked at a later date.

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