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More Details for 2007-11-02
STS-120 MCC Status Report #21

The space shuttle Discovery and International Space Station crews today will focus on reviewing spacewalk procedures and unberthing the shuttle’s Orbiter Boom Sensor System for Saturday’s spacewalk to repair a torn solar array.

The crews were awakened this morning at 12:08 with the song “World” by Five for Fighting for Mission Specialist Doug Wheelock, who will be performing his third spacewalk on Saturday. Wheelock dedicated the song to the ground support team.

Mission managers decided Wednesday it was important that the station’s P6 solar array be stabilized to prevent further tearing. Engineers have been working around the clock to prepare procedures for the robotic operations, tool configuration and the spacewalk.

During the early hours, ground controllers will move the station’s mobile transporter from the end of the port truss to the truss’ center. From there, Mission Specialist Stephanie Wilson and Expedition 16 Flight Engineer Dan Tani will then use the station’s robotic arm to grapple the Orbiter Boom Sensor System. The boom will be handed to the shuttle robotic arm for the night and the mobile transporter will then return to the end of the port truss.

On Saturday, the boom will be transferred back to the station’s arm to allow Mission Specialist Scott Parazynski to reach the torn 4B solar array panel. Parazynski will install five solar array hinge stabilizers, also known as cufflinks, to steady the array. Wheelock will assist from the station’s truss.

Inside the Harmony node, Expedition 16 Commander Peggy Whitson and Mission Specialist Clay Anderson will install a computer router that will be used once the module is moved to its permanent location at the end of the Destiny laboratory. Yesterday, the crew completed the initial outfitting of Harmony.

The STS-120 crew has completed all of the major objectives for this mission, including installing Harmony in a temporary location at the end of the Unity node, relocating the P6 truss from the zenith side of the station to the end of the port truss, and installing a spare main bus switching unit on a storage platform for later use.

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