The week began with Sunday and Monday off for Malenchenko and Lu to help them become accustomed to their home for the next six months. An hour of ISS familiarization followed on Tuesday, along with standard maintenance and inspection activities.
The station's toilet system underwent three hours of periodic maintenance on Wednesday, with Malenchenko changing out elements, including hoses and filter inserts. Lu also had a three-hour project, inspecting emergency lighting power sources in the station's U.S. segment.
The first medical tests for the new crew were a Thursday highlight. The experiments looked at crew body mass, red blood cell count and heart activity. The Resistive Exercise Device (RED) was out of kilter, showing higher than normal resistance and making unusual sounds.
Today was the Russian holiday, Victory Day, marking the end of World War II in Europe.The crew had the day off, but they did perform scheduled maintenance and two sessions each of physical exercise. Lu changed out canisters on the RED. The device is functioning well after the canister change out.
Meanwhile, the Expedition 6 crew remains at Star City, the Russian cosmonaut training center near Moscow, after its landing in Kazakhstan on May 3. E6 Commander Ken Bowersox, Cosmonaut Nikolai Budarin and NASA ISS Science Officer Don Pettit are undergoing debriefings and physical rehabilitation. Bowersox and Pettit are scheduled to return to Johnson Space Center a little over a week from now.