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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 20 JULY 2001:

PAYLOAD TILTED TO HORIZONTAL ORIENTATION
The GP-B payload test team reduced the liquid helium level in the main tank to approximately 62% and then tilted the payload to a horizontal orientation. The probe gas and vacuum lines are currently being installed on the payload to support the upcoming testing of gyroscopes #1 and #2.

Photo: The Payload in horizontal position.

CCCA SUCCESSFULLY RE-INSTALLED ON SPACECRAFT
The GP-B spacecraft team successfully re-installed the CCCA on to the spacecraft following rework at Southwest Research Institute. The box is successfully undergoing confidence testing in support of continuing spacecraft functional testing.

Photo: Mark Anderson and Jerry Aguinaldo with the GP-B spacecraft in LM B/205.

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