Fourth spacewalk (EVA) moved to Saturday for STS-120
NASA mission control has moved the fourth planned spacewalk, that was scheduled for today, to Saturday, in order to work on the torn solar array panel (see the MCC Status Report #18 for more info). Here’s NASA’s official statement regarding the spacewalk to be led and performed by astronaut Scott Parazynski.
The STS-120 and Expedition 16 crews will continue to work today on the tools and procedures for Saturday’s spacewalk to repair a torn solar array. Mission Specialists Scott Parazynski and Doug Wheelock will conduct the excursion, which is slated to kick off at 6:28 a.m. EDT Saturday.
Parazynski will make the repair while suspended from a boom attached to the space station’s robotic arm, and Wheelock will assist from the station’s truss. Mission Specialist Stephanie Wilson and Expedition 16 Flight Engineer Dan Tani will be operating the station’s robotic arm from the robotic work station inside the Destiny laboratory. Mission Specialist Paolo Nespoli will be the spacewalk coordinator.
The Mobile Transporter has moved near the center of the truss structure to let Canadarm2 grapple the shuttle’s arm extension, the Orbiter Boom Sensor System, before handing it back to the shuttle’s robotic arm for the night. Canadarm2 will use the extension to provide support for Parazynski on the Saturday spacewalk.
Image Above: The mobile transporter (lower center) moves towards the center of the station’s truss structure. Image credit: NASA