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1993-05-03
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PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
Contact: James H. Wilson
FOR IMMEDIATE RELEASE August 20, 1991
The cooling turn performed last week by the Galileo
spacecraft did not result in low enough temperatures to release
the few antenna ribs apparently bound by friction to the
antenna's central tower, Galileo project officials said today.
Another cooling turn is being planned for December 1991 when
Galileo is farther from the sun; additional actions will be taken
at that time to cool the antenna tower further. These cooling
turns are part of a series of steps the project believes will be
required ultimately to deploy the antenna, the officials said;
each step yields valuable data to help with the design of
spacecraft actions in the next step.
For the next two months, the Galileo flight team will
concentrate on the final preparations for Galileo's October 29
encounter with the asteroid Gaspra. This will be the first
spacecraft asteroid encounter.
Galileo's high-gain antenna is not essential for mission
operations until the spacecraft is in orbit around Jupiter in
December 1995, project officials said.
The Galileo project is managed for NASA's Office of Space
Science and Applications by the Jet Propulsion Laboratory.
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