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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 13 February 1998:

STANFORD HIGHLIGHT
Dr. Jason Gwo and Ken Bower have successfully completed the fabrication of Telescope #3, the primary Science Mission telescope. Engineering unit detectors were installed and the telescope is presently undergoing acceptance testing.

SPACE VEHICLE HIGHLIGHT
The Thruster Isolation Valve (TIV) engineering unit successfully completed life testing. The unit performed nominally after 1000 open/closed cycles. The unit has completed random vibration, burst and leak testing. Pyro shock testing is scheduled to be completed by the end of February.

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