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International Space Station Status Report #24, 2006



 
 
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Old May 14th 06, 10:39 PM posted to sci.space.station
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Default International Space Station Status Report #24, 2006

International Space Station Status Report #24

2006
Report #24
2 p.m. CDT, Friday, May 12, 2006
Mission Control Center, Houston

Expedition 13 Commander Pavel Vinogradov and Flight Engineer Jeff Williams
focused this week on science experiments, maintenance tasks and unpacking
cargo on the International Space Station.

Using the microgravity science glovebox, Williams began the second of three
sessions Wednesday of the Pore Formation and Mobility Investigation
experiment. This experiment studies bubbling that occurs in weightlessness
as liquids cool and solidify.

Williams will begin his first Saturday Science activity this weekend with
the Cellular Biotechnology Operations Support Systems Fluid Dynamics
Investigation. This is a series of experiments to improve fluid mixing
techniques and to control bubble distribution for cell culture in orbit.

On May 4, ISS Progress 21 engines were used to reboost the station.
Afterward, an error message indicated the Zvezda Service Module computers
couldn't command the Progress engines to reconfigure for normal operations.
The reboost was not affected. Engineers have determined the most likely
cause of the message was a software error, which will be corrected.
Meanwhile, a procedural change will allow the Progress thrusters to be used.
Vinogradov and Williams continued to unpack supplies from that cargo
vehicle.

Last week, engineers detected a small reduction of nitrogen pressure in the
liquids unit of the oxygen-generating Elektron. To isolate the source of the
leak, Russian flight controllers asked Vinogradov to turn off the machine.
They have identified the small leak and plan to operate the Elektron as
needed. A spare liquids unit is onboard.

The Elektron will remain deactivated until after a June 1 spacewalk.
Engineers originally had planned to turn it off next week to reconfigure
ventilation lines and to install a new hydrogen vent before the
extravehicular activity. Meanwhile, oxygen from tanks in the ISS Progress 20
cargo vehicle is being added to the station's cabin.

On Thursday, Williams practiced using the station's robotic arm. He and
Vinogradov spoke Wednesday with reporters from the StarDate syndicated Radio
Network and WISN-TV of Milwaukee.

The next station status report will be issued on Friday, May 19, or earlier
if events warrant. For more about the crew's activities and station sighting
opportunities, visit:

http://www.nasa.gov/station


###


--
--------------

Jacques :-)

www.spacepatches.nl


 




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