Wed, Dec 13, 2006
Closer Inspection Of Heat Shield Not Necessary
Following the shuttle Discovery's successful docking Monday
with the International Space Station, astronauts Robert Curbeam and
Christer Fuglesang stepped out of the station Tuesday afternoon for
the first of three planned spacewalks.
The spacewalk began at 3:31 pm EST and the P5 was attached to
the P4 segment at 5:45 p.m. Mission Specialist Joan Higginbotham
used the station's robotic arm to move the new segment with only
inches of clearance into its installation position. Then, the
spacewalkers guided Higginbotham with visual cues as the exacting
operation was carried out.
The astronauts installed a new component of the International
Space Station’s girder-like truss. Mission Specialist Joan
Higginbotham used the station's robotic arm to move the new segment
into its installation position. The spacewalkers then bolted the
segment to its permanent position, and connected power, data, and
heater cables.
The spacewalk began at 3:31 pm EST, and the P5 was attached to
the P4 segment at 5:45 pm.
In other news, NASA is examining images taken during Monday's
docking operation, to determine if Discovery's heat shield suffered
any damage during launch.
Despite evidence of "dings" in some of the heat-resistant tiles
on Discovery's belly and wings, engineers have recommended against
taking the time to get a closer look. NASA says the impressions,
detected during a sensor sweep Sunday, were likely caused by shock
waves or a micrometeoroid, and do not pose a safety issue.
Engineers also took a close look at a small piece of a
cellophane-like material sticking out of the shuttle's left
external fuel tank door. The orange "blanket" is used to keep
nitrogen in place during launch.
Two more spacewalks are on tap for STS-116. All three will be
based out of the station’s Quest Airlock. Next on tap is the
retraction of the port solar array on the P6 truss segment.
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