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Station Crew Returns to Regular Work Schedule

Published by Klaus Schmidt on Fri Aug 20, 2010 8:07 am via: NASA
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The International Space Station’s Expedition 24 crew was able to return to a regular work schedule Thursday, after the completion of system reconfiguration tasks related to the newly replaced ammonia pump module on the S1 Truss.

Expedition 24 Flight Engineer Doug Wheelock removed a jumper cable that provided redundant cooling to the Russian segment of the station early Thursday morning. This completed the final task in the complex reconfiguration of station systems following the replacement of the failed ammonia pump module that took down cooling Loop A on the night of July 31. With Loop A fully functional and the replacement pump operating normally, the station crew resumed a regular work schedule Thursday of science investigations and normal maintenance activities.

Expedition 24 Flight Engineers Shannon Walker (left), Doug Wheelock (center) and Tracy Caldwell Dyson answer questions from CBS News. Credit: NASA TV

Expedition 24 Flight Engineers Shannon Walker (left), Doug Wheelock (center) and Tracy Caldwell Dyson answer questions from CBS News. Credit: NASA TV

Wheelock and Flight Engineer Tracy Caldwell Dyson performed three spacewalks to replace the pump.

Flight Engineer Shannon Walker performed a session with the Synchronized Position, Hold, Engage and Reorient Experimental Satellites, or SPHERES, a study that tests techniques that could lead to advancements in automated dockings, satellite servicing, spacecraft assembly and emergency repairs. Part of NASA’s 2010 Summer of Innovation, Thursday’s session was in conjunction with the ZERO Robotics student competition, in which high school students program the satellites to perform specific tasks.

Flight Engineer Mikhail Kornienko conducted an observation with the Rusalka experiment, which is a test of procedures for remote determination of methane and carbon dioxide content in the Earth’s atmosphere.

The thrusters of the docked ISS Progress 38 cargo craft fired for 11 minutes, 16 seconds Wednesday to boost the perigee of the station’s orbit. This will put the complex in the proper position for the arrival of ISS Progress 39 and the departure of Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko aboard Soyuz TMA-18 in September. The station is now orbiting at an altitude of 221.1 by 220.5 statute miles.

Progress 39 is set to lift off Sept. 8 from the Baikonur Cosmodrome in Kazakhstan.

In addition Wheelock, Walker and Caldwell Dyson answered questions from CBS News.

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