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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 21 November 1997:

STANFORD HIGHLIGHT
Dale Gill and Roger Shile have completed the coating and patterning of the last three readout loops for the housings of the science mission gyroscope. These brings the total number of housings with completed loops to the full complement of fifteen units, covering the needs for the primary and backup instruments, as well as for spares.

SPACE VEHICLE HIGHLIGHT
The Test Readiness Review for the booster separation test was successfully held on 15 November. The test consists of two separate firings of the Delta II interface explosive nut system. The purpose of the test is to validate booster-to-space vehicle mechanical interface compatibility and measure the pyro shock environment at critical locations on the equipment section. The test is scheduled to be completed by 21 November. The Operations Readiness Review for the Probe modifications to accommodate the Belleville Preload System was successfully held on 12 November. The Probe Modifications are scheduled to start before 21 November.

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