SUBMITTED BY ARTHUR N1ORC - AMSAT A/C #31468
*P6 Solar Array Wing Retracting*
retracted. Image Credit: NASA TV
The first step in STS-116’s challenging job of rerouting power aboard the International Space Station is under way as the left wing of the solar array on the station's P6 truss has begun to slowly retract and fold up. The retraction began at 1:28 p.m. EST.
The folding of this 115-foot long solar array, which has been unfurled for more than 6 years, will permit the activation of a rotary joint on the P4 truss. The Solar Alpha Rotary Joint, or SARJ, enables the solar arrays on the P4 to follow the sun as the station moves through orbital sunrise and sunset. Activation of the SARJ is set for 2:57 p.m.
Two more spacewalks during STS-116’s stay will rewire and redistribute power on the station.
Once automatic sun tracking is confirmed for the new P4 arrays, the stage is set for the second spacewalk, scheduled to begin at 3:12 p.m. Thursday. Mission Specialists Bob Curbeam and Christer Fuglesang, who conducted the mission’s first spacewalk, will perform Thursday’s excursion.
Curbeam and Fuglesang will again “campout” in the station’s airlock to prepare for the spacewalk. During the overnight “campout” the pressure will be lowered in the airlock to the pressure normally found on Earth 10,000 feet above sea level. The procedure protects against decompression sickness as Curbeam and Fuglesang go to the even lower pressure of spacesuits on Thursday.
In other activities today, crew members will field questions from the CBS Radio Network, the Fox Radio Network and SPACE.com at 8:07 p.m.
For the latest news and information on the International Space Station and the Expedition 14 crew, please visit the main station page. + Read more http://www.nasa.gov/station