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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 22 OCTOBER 1999:

STANFORD HIGHLIGHT
Phase A of payload test continued this past week with additional measurements of the thermal characteristics of the flight probe and flight dewar. The thermal measurements should provide an estimate of the on-orbit lifetime of the experiment. Present indications are that the lifetime does not meet the requirement and therefore a probe repair may be required. The team members involved in this work include Jim Maddocks, D. Murray, M. Taber, and T. Welsh.
The GP-S software team has completed a successful software review. The meeting was attended by both internal GP-B team members and outside experts. The GP-B team included Jie Li, Aweli Ndili, and Robert Schultz.

Photo: The flight probe.

SPACE VEHICLE HIGHLIGHT
The GP-B protoqual GPS antennas and receivers, with associated bracketry, successfully passed random vibration testing in LMMS B/181.

Photo: LMMS Intern Linden Willis-Kilgroe installing the GPS antennas for random vibration testing.

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