Today, most of the crew will be involved in logistics transfer activities within the Discovery/ISS orbiting complex. Husband and Mission Specialists Ellen Ochoa, Tammy Jernigan and Dan Barry have a significant portion of their day dedicated to moving transfer bags of different sizes and shapes from the Spacehab module in Discovery's cargo bay to resting places inside the International Space Station. Some 2,900 pounds of logistics items and water will be transferred before the crew bids goodbye to its orbiting work site on Thursday.
Discovery's crew will also complete maintenance activities in support of the station. Early in the workday, Russian cosmonaut Valery Tokarev and Canadian astronaut Julie Payette will change out the last battery recharge controller modules attached to two of Zarya's storage batteries. These recharging units, also known as microelectronic charge/discharge current integrator units, determine the battery charge level. Since mid-April, flight controllers had been monitoring a slight decrease in this level, and the on-orbit maintenance work is expected to allow the batteries to charge fully once again.
Later, Barry and Tokarev will put the remaining sound mufflers inside the Zarya module. Ambient noise from air circulating fans and equipment could be somewhat distracting to crew members spending time on orbit, so mufflers are being installed to dampen the noise. After the install, Barry will measure sound levels at different positions inside the module.
At 12:20 a.m. Tuesday, Commander Kent Rominger and Tokarev will conduct a news conference with Russian media located at the Mission Control Center in Moscow.
The day will end with a logistics transfer briefing conducted by Payette. The crew is scheduled to turn in at about 8 a.m. CDT Tuesday.
Discovery and the International Space Station are in excellent health orbiting 240 miles above the Earth.