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Schlegel Completes First Spacewalk

ESA astronaut Hans Schlegel completed his first ever spacewalk on 13 February 2008. The second spacewalk of the STS-122 Shuttle mission lasted six hours 45 minutes. Shortly after the spacewalk officially started to 15:27 CET (14:27 UT), Schlegel and NASA astronaut Rex Walheim headed out of the International Space Station's Quest Airlock. The spacewalkers main task was to replace a nitrogen tank used to pressurise the Station's ammonia cooling system. The replacement of the tank is part of regular Station maintenance. A new nitrogen tank was carried to ISS inside Atlantis' payload bay. Credits: ESA/NASA
by Staff Writers
Paris, France (ESA) Feb 15, 2008
ESA astronaut Hans Schlegel today completed his first ever spacewalk. The second spacewalk of the STS-122 Shuttle mission lasted six hours 45 minutes.

Shortly after the spacewalk officially started to 15:27 CET (14:27 UT), Schlegel and NASA astronaut Rex Walheim headed out of the International Space Station's Quest Airlock. The spacewalkers main task was to replace a nitrogen tank used to pressurise the Station's ammonia cooling system. The replacement of the tank is part of regular Station maintenance. A new nitrogen tank was carried to ISS inside Atlantis' payload bay.

With the help from Leland Melvin at the controls of the Station's robotic arm, and with spacewalk coordination provided by Shuttle pilot Alan Poindexter, the spacewalkers moved the new nitrogen tank from its position in Atlantis' payload bay.

They temporarily stowed it on a Crew and Equipment Translation Aid cart while they removed the old tank. Once the new nitrogen tank was installed, the old tank was transferred to the orbiter's payload bay for return to Earth.

After finishing the nitrogen tank task ahead of time, the spacewalkers were able conduct some so-called 'get-ahead' tasks, such as the installation of thermal covers on the trunnion pins on the newly installed European Columbus laboratory. They also inspected and adjusted the U.S. Destiny laboratory's orbital debris shields.

Stanley Love will join Walheim for the STS-122 mission's third spacewalk on Friday. They will install two payloads on the outside of Columbus: SOLAR, an observatory to monitor the Sun; and the European Technology Exposure Facility (EuTEF) that will carry eight experiments requiring exposure to the space environment.

NASA announced a decision to extend the STS-122 mission to 13 days. Atlantis will undock from the Space Station on Monday 18 February, and land at 15:06 CET (09:06 Florida time), on Wednesday 20 February, at NASA's Kennedy Space Center, Florida.

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Astronauts complete successful spacewalk
Washington (AFP) Feb 13, 2008
Two spacewalking astronauts, including a German who fell ill at the start of the shuttle Atlantis mission, successfully replaced a nitrogen tank on the orbiting International Space Station on Wednesday, NASA said.







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