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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 10 SEPTEMBER 1999:

STANFORD HIGHLIGHT

Payload Test Phase A continued this week with an ECU EU controlled flux flushing of the payload. The output of the readout systems on gyroscopes 1, 2, and 3 show a significant improvement (reduction) in these gyroscope's trapped flux. Next, the gyroscopes will be levitated and spun slowly to verify functionality and to directly measure the trapped flux in each gyroscope. The team members involved in this work are Russ Leese, Dave Meriwether, Dave Murray, Barry Muhlfelder, Byron Oh, Dorrene Ross, Mike Taber, and Tom Welsh.

Photo: Engineer Ming Luo installing the flight readout cables on the science instrument.
Large Photo (click small to view): A close-up of the readout systems (the lower SQUID readout device is uncovered, while the upper readout device is covered).

SPACE VEHICLE HIGHLIGHT
The first GP-B solar array substrate was recieved from Composite Optics Inc, San Diego, CA. First article tool tries are in process at the Solar Array Product Center.
Photo: LMMS Engineer Terry Messersmith with the first GP-B solar array substrate in its handling frame.

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