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Expedition Six Spacewalks

The Expedition Six crew conducted two spacewalks during its stay at the International Space Station. Both were based out of the Quest Airlock, and the spacewalkers used U.S. spacesuits, which are called Extravehicular Mobility Units, or EMUs. The crew was originally scheduled to conduct only one spacewalk, but a second was added to the manifest for April 8 in order to prepare for future assembly missions.

The two Expedition Six extravehicular activities bring the total number of spacewalks conducted in support of ISS assembly and maintenance to 51. Twenty-six have been based out of the station, with 17 staged from Quest. Bowersox and Pettit accumulated 13 hours and 17 minutes of spacewalking time at the station.

Learn more about the spacewalks required to build the International Space Station.

EVA Cosmonauts and Astronauts and Suit ID
Ken Bowersox (EV1): red stripes
Don Pettit (EV2): solid white suit

Spacewalk 1
Ken Bowersox, Don Pettit
Time: 6 hours, 51 minutes
Start time: 6:50 a.m. CST (1250 GMT) Jan. 15, 2003
End time: 1:41 p.m. CST (1941 GMT) Jan. 15, 2003

Bowersox and Pettit continued outfitting and activating the International Space Station's newest component, the P1 (P-One) Truss. The P1's radiator assembly was a major focus during the spacewalk. Bowersox and Pettit released the remaining launch locks on the radiator assembly, which allowed the radiator assembly to be deployed. Other scheduled tasks completed included removing some debris that was on a sealing ring on the Unity Module's Earth-facing docking port, and they tested an ammonia reservoir on the station's P6 Truss. They were unable to complete one scheduled task -- the installation of a light fixture on one of the station's Crew and Equipment Translation Aid, or CETA, carts. The fixture's attachment will be rescheduled for a future spacewalk.

To complete the spacewalk, Bowersox and Pettit cut away a thermal cover strap that apparently interfered with the rotation of the Quest Airlock's hatch and delayed the start of the extravehicular activity.

Spacewalk 2
Ken Bowersox, Don Pettit
Time: 6 hours, 26 minutes
Start time: 7:40 a.m. CDT (1240 GMT) April 8, 2003
End time: 2:06 p.m. CDT (1906 GMT) April 8, 2003

Bowersox and Pettit reconfigured cables on the S0 (S-Zero), S1 and P1 Trusses for future Integrated Truss Structure component deliveries and replaced a Power Control Module on the Mobile Transporter. They provided Control Moment Gyro No. 2 with a redundant power channel capability by rerouting cables. Then, they installed Spool Positioning Devices on Destiny Laboratory heat exchangers and reinstalled a thermal cover on an S1 Radiator Beam Valve Module. Bowersox and Pettit also unfurled a light stanchion on the CETA cart that did not unfurl properly during their first spacewalk.

EVA Details
Related Links
*Expedition Six Press Kit (1.7 Mb PDF)
*Integrated Truss Structure
*Zvezda Service Module
*Amateur Radio Relay League News Release

Curator: Kim Dismukes | Responsible NASA Official: John Ira Petty | Updated: 04/08/2003
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