Flight Engineer Tracy Caldwell Dyson was in the Destiny laboratory working on the Oxygen Generation System. While the advanced life-support system has been experiencing problems, the station continues generating oxygen with backup generators. Caldwell Dyson changed out a pump then plugged and unplugged connectors with no resolution or source of the problem revealed. Ground controllers continue troubleshooting the system.
Caldwell Dyson also worked with the SPHERES experiment which studies a trio of autonomous, basketball-sized satellites and how they interact with each other. Ongoing since 2006 inside the International Space Station, SPHERES tests techniques for automated rendezvous and flying in formation in microgravity.
Commander Alexander Skvortsov and Flight Engineer Mikhail Kornienko were in the station’s Russian segment inventorying gear and supplies. They also relocated items from the Zarya control module to the new Russian Rassvet Mini-Research Module. The cosmonauts tagged up with specialists on the ground for those activities and other maintenance tasks.
At the Baikonur Cosmodrome in Kazakhstan, the Expedition 24 crew members conducted a fit check inside the Soyuz TMA-19 spacecraft. The spacecraft will be mated to its booster rocket on Saturday and rolled out to the launch pad on Sunday. Lift-off to the International Space Station is scheduled for Tuesday at 5:35 p.m. EDT. Flight Engineers Doug Wheelock, Shannon Walker and Fyodor Yurchikhin will dock to the Zvezda service module Thursday at 6:25 p.m. They will join their new crewmates after hatch opening a couple of hours later
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