Headlines > News > Astronauts Complete Second STS-131 Spacewalk

Astronauts Complete Second STS-131 Spacewalk

Published by Klaus Schmidt on Sun Apr 11, 2010 1:33 pm via: NASA
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(NASA) – STS-131 Mission Specialists Rick Mastracchio and Clayton Anderson completed a seven-hour, 26-minute spacewalk at 8:56 a.m. EDT Sunday.

Using a combination of robotics and spacewalking expertise, Discovery’s crew members installed a new Ammonia Tank Assembly (ATA) on the International Space Station’s Starboard 1 truss. Mission Control verified that electrical connections with the ATA are working. Because of a troublesome bolt, the spacewalkers fell behind the timeline and were unable to complete all the scheduled work. Tasks that were deferred from today’s spacewalk include fluid connections to the ATA and the retrieval of two micrometeoroid debris shields for return to Earth.

Expedition 23 crew members share a meal at the galley in the Zvezda Service Module of the International Space Station. Pictured from the left are Russian cosmonauts Oleg Kotov, commander; Mikhail Kornienko, flight engineer, and Alexander Skvortsov, Soyuz commander and flight engineer. Image Credit: NASA

Expedition 23 crew members share a meal at the galley in the Zvezda Service Module of the International Space Station. Pictured from the left are Russian cosmonauts Oleg Kotov, commander; Mikhail Kornienko, flight engineer, and Alexander Skvortsov, Soyuz commander and flight engineer. Image Credit: NASA

This was the second of three STS-131 spacewalks, the 235th conducted by U.S. astronauts and the fifth for both Mastracchio and Anderson. It was the 142nd in support of International Space Station assembly and maintenance, totaling 887 hours, 9 minutes. It was the 114th spacewalk based out of the space station, totaling 699 hours, 54 minutes.

The shuttle and station crews continue to unload the Leonardo Multi-Purpose Logistics Module and transfer 17,000 pounds of science racks and other supplies into the station.

This is the final roundtrip to the station for the 21-foot-long, 15-foot-diameter Leonardo. Once back on Earth, the module will be reconfigured with increased shielding on the outside for the STS-133 mission in September when it will be left on the station as a permanent module.

At 1:24 a.m. Saturday, a smoke alarm sounded aboard the International Space Station’s Zvezda service module. Expedition 23 Commander Oleg Kotov quickly assessed that it was a false alarm that occurred while he was cleaning air filters in the module. The Expedition 23 and STS-131 crews are continuing their joint operations aboard the International Space Station.

STS-131 is the 33rd shuttle mission to the station.

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