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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 10 April 1998:

STANFORD HIGHLIGHT
Robert Brumley, David Hipkins, Chris Gray, and Bruce Clarke have completed the commissioning of gyroscope FQH53 with quartz rotor 95FH5. The asymptotic spin speed with Helium 4 was 110 Hz, representing a discrepancy from the testing requirement of 125Hz. However, by optimizing the Science Mission spin-up process, the T003 requirements for spin speed will be met.

SPACE VEHICLE HIGHLIGHT
The aft helium plumbing assembly has been installed on the aft equipment section structure. This plumbing installation was critical to ensure correct wire harness routing on the structure.

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