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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 15 January 1999:

STANFORD HIGHLIGHT
Under the direction of Dr. Doron Bardas the pre-integration preparations of Probe C at Stanford have been completed. These preparatons included electrical measurements of isolation and continuity of probe wiring, verification of the cleanliness of the gyroscope plumbing, and installation of the first 3 probe windows. The probe is now ready for integration of the science instrument which includes (in chronological order) the installation of the telescope/QB, the installation of the gyroscopes, the installation of the gyroscope caging system, and finally the installation of the SQUIDs. Photo 1: Probe C at delivery Photo 2: Dr. Bardas and team with science instrument assembly.

SPACE VEHICLE HIGHLIGHT
All eight aft helium thrusters have finished characterization testing, including repeat testing to insure consistent data, and are ready for installation on the space vehicle. Photo: LMMS employees Lisa Gullo and Rose Lalanne with the helium thruster characterization test cryo-freezer.

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