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SPACEWALK COMPLETED



SUBMITTED BY ARTHUR N1ORC - AMSAT A/C #31468

*Spacewalkers Prepare Truss for Relocation
28 October 2007
*
Image Above: STS-120 spacewalkers exit the Quest airlock to begin the 
second spacewalk of the mission. Image credit: NASA TV: TO VIEW IMAGE GO TO
http://www.nasa.gov/mission_pages/shuttle/main/index.html

STS-120ís second spacewalk is now in the books. Mission Specialist Scott 
Parazynski and Expedition 16 Flight Engineer Daniel Tani successfully 
prepared the P6 truss for its relocation during the excursion, which 
ended at 12:05 p.m. EDT.

Parazynski and Tani began the spacewalk heading to the section where the 
P6 truss was attached to the Z1 truss. Once there they disconnected the 
umbilicals and bolts holding the two trusses together. Mission 
Specialists Stephanie Wilson and Doug Wheelock used the station robotic 
arm to remove the P6. They will place the solar array section in a 
temporary holding position for tonight before handing it off to the 
shuttle's robotic arm Monday morning.

Tani performed a couple of inspections requested by mission managers. He 
inspected handrails on a Crew and Equipment Translation Aid cart, but he 
did not note any apparent sharp edges on them. While inspecting a rotary 
joint used to rotate solar arrays he noticed metal shavings and unusual 
wear on a race ring. The joint has been showing some increased friction 
lately, and engineers are analyzing potential causes.

The excursion lasted 6 hours and 33 minutes. Mission Specialist Paolo 
Nespoli was the spacewalk coordinator, assisting the spacewalkers with 
their tasks.

The next spacewalk is scheduled to take place Tuesday. Parazynski and 
Wheelock will team up to assist with robotic arm attachment of the P6 
truss in its new location on P5.

*Mission Information*
+ STS-120 Mission Overview 
<http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts120/index.html>
+ Harmony Node 2 
<http://www.nasa.gov/mission_pages/station/behindscenes/harmony_payload.html>
+ Space Shuttle Discovery 
<http://www.nasa.gov/centers/kennedy/shuttleoperations/orbiters/discovery-info.html> 

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