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NASA HSF News Digest V1 #7


	2002 International Space Station Status Report #7

Date: Mon, 4 Feb 2002 16:00:50 -0600 (CST)
From: info@jsc.nasa.gov
Subject: 2002 International Space Station Status Report #7

 4 p.m. CST, Monday, Feb. 4, 2002 
 Expedition Four Crew 
 The Expedition Four crew's normal work was interrupted this morning when
a main computer in the International Space Station's Russian Zvezda
living quarters module unexpectedly went off-line, disrupting the system
which controls the spacecraft's orientation for a few hours. The computer
is now back on-line and all station systems are operating normally.

The crew -- Commander Yury Onufrienko and Flight Engineers Dan Bursch and
Carl Walz -- was never in any danger, but began quickly powering down
backup equipment and several experiments in case the power generated by
the station's solar arrays began to decrease. With the station's
orientation not controlled, the solar arrays were not able to
autonomously point directly at the sun to generate full power for the
complex. The computer went off-line at about 7 a.m. CST.

Flight controllers in Houston and Moscow worked together to restore all
operations of the station during the morning, and, at one point, the crew
sent manual commands to ensure the solar arrays remained directed at the
sun. Russian controllers have not yet determined the cause of the
computer problem and are continuing to analyze it.

By 9:30 a.m., flight controllers at the control center in Korolev,
Russia, had successfully restarted the computer, and, by 11:30 a.m., the
station's orientation control system had begun to be restored to

The crew began its sleep period as normal at around 3:30 p.m. CST. They
will awaken at about midnight CST, and they will spend some time tomorrow
continuing a recovery of the equipment that was powered down as a result
of today's problem. 

Information on the crew's activities aboard the space station, future
launch dates and times, as well as station sighting opportunities from
anywhere on the Earth, is available on the internet at:
http://spaceflight.nasa.gov. Details on station science operations can be
found on an internet site administered by the Payload Operations Center
at NASA's Marshall Space Flight Center in Huntsville, Ala., at:

The next ISS status report will be issued Feb. 8, or sooner, if
developments warrant.

- -END-

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End of NASA HSF News Digest V1 #7

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