[sarex] Spacewalkers Install S5 Truss,
azrowe80 at verizon.net
Sat Aug 11 13:58:41 PDT 2007
SUBMITTED BY ARTHUR N1ORC - AMSAT A/C#31468
*Spacewalkers Install S5 Truss, Work Ahead of Schedule*
TO VIEW IMAGE GO
Image above: Mission Specialist Rick Mastracchio participates in the
first spacewalk of the STS-118 mission. Image: NASA TV
STS-118's first spacewalk continues to run smoothly and ahead of schedule.
The crew quickly went to work after starting the excursion at 12:28 p.m.
EDT. With spacewalkers Rick Mastracchio and Dave Williams assisting,
Pilot Charles Hobaugh used the station’s robotic arm to attach the S5
about 1:35 p.m. The spacewalkers then completed the task of permanently
bolting the S5 in place on the end of the Starboard 4 truss segment.
Mastracchio and Williams are performing some scheduled and get-ahead
tasks to prepare the S5 for the arrival of the Starboard 6 truss next year.
The next major task of the spacewalk is the retraction of a radiator on
the Port 6 (P6) truss. After the radiator is folded, Mastracchio and
Williams will secure it. The P6 will be relocated from atop the station
to the end of the Port 5 truss during a future shuttle mission.
Mastracchio and Williams are scheduled to wrap up at about 6:58
p.m.(2258 UTC) STS-118 Mission Specialist Tracy Caldwell is the
spacewalk coordinator, and Expedition 15 Flight Engineer Clay Anderson
is assisting Hobaugh at the controls of the station’s Canadian-built
The Station-to-Shuttle Power Transfer System, which was activated after
Friday’s docking, has been shut down as a precaution during the
spacewalk. It will be brought back online after the conclusion of the
excursion. The transfer system may allow Space Shuttle Endeavour and the
STS-118 crew to stay at the station longer. A decision on a possible
mission extension to 14 days is expected to be made Sunday.
Animations: + S5 Truss Overview
| + S5 Truss Installation
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