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International Space Station Expedition Five Science Operations Status Report
Dec. 5, 2002
Elements of the Microgravity Science Glovebox were packed aboard Space
Shuttle Endeavour for return to Earth for repairs this week after extensive
troubleshooting efforts by the crew of the International Space Station.
Expedition Five Science Officer Peggy Whitson and Expedition Six Science
Officer Don Pettit conducted a variety of tests - including electronic
continuity checks - on the Glovebox on Friday, Saturday and Sunday. The crew
and control teams concluded that in-orbit repair was not possible on the
Glovebox. The Power Distribution and Control (PDC) box and a related
component, the Exchangeable Standard Electronics Module (ESEM) #3, were
packed aboard Endeavour Sunday before undocking on Monday. Replacement parts
are in the final stages of testing and will be ready for the next shuttle
flight to Space Station in March. The returned parts will be examined for
failure analysis. If there is an inherent design problem, a modification
will be attempted prior to re-flight in March. The Glovebox experienced a
loss of power on November 20 during sample processing on the Pore Formation
and Mobility Investigation. Subsequent attempts to re-power the Glovebox
were unsuccessful. Glovebox science activities will be deferred until the
returned equipment can be repaired and ferried back to the Station.
Before Shuttle undocking on Monday, the crews completed the transfer of new
Expedition Six experiments to the orbiting lab and stowing completed
Expedition Five payloads aboard the Space Shuttle. Five new experiments or
additional samples for current experiments were stowed in the Destiny lab
module. Plants and biological samples grown and processed during Expedition
Five will be returned to science teams on the ground for analysis.
Beginning today (Dec. 4) and scheduled to continue through Saturday, Pettit,
Nikolai Budarin and Ken Bowersox did the computer-based training, diet log
and urine sample collections for the Renal Stone experiment. Pettit is
scheduled to stow the experiment hardware on Sunday. The crew will do the
Renal Stone research two more times during Expedition Six, in addition to
daily ingestion of Potassium Citrate/Placebo pills as part of the
countermeasure study.
Also today, Pettit - together with the science team and controllers on the
ground - installed a new computer hard drive into the Human Research
Facility (HRF) laptop computer and upgrading the HRF rack operating software
to support Expedition Six research operations. Ground controllers verified
that the software upgrade worked correctly.
Pettit today was also scheduled to download radiation data from the EVA
Radiation Monitoring (EVARM) experiment to the HRF laptop, which were later
sent to the ground. The data was collected by dosimeter badges worn in the
U.S. EVA suits during three spacewalks to attach a new section of framework
to the Station. The badges measure radiation absorbed by the eyes, skin,
and blood-forming organs.
On Friday, Pettit is scheduled to prepare and check out the HRF workstation
to support the new Foot Reaction Forces During Space Flight (FOOT)
experiment. This experiment will study the stress on the lower extremity
bones and muscles during extended missions in microgravity. Experiment
operations are planned for later this month.
Crew Earth Observation subjects for this week included: lake levels in the
Central Andes related to El Nino-related rainfall patterns, Central Andes
Mts., the El Chichon volcano in Mexico, Guatemala's Santiaguito and Pacaya
volcanoes, the Peten rain forest, major coral reefs of the Yucatan
coastline, panoramic views of Cuba, the Bounty Islands, North Island and
Aukland in New Zealand, Honolulu, Hawaii, Lake Eyre in Australia, Riyadh,
Saudi Arabia, the active volcano of Mt. Cameroon, Bamako, Mali, Navassa
Island in the Caribbean, and Mexico City.
The Expedition Six crew this week continued to conduct daily status health
and status checks on new and continuing research payloads.
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