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Gravity Probe B

Testing Einstein's Universe

WEEKLY HIGHLIGHTS FOR WEEK ENDING 30 NOVEMBER 2001:

SPACE VEHICLE INTEGRATION MAKES GOOD PROGESS
The 4 aft GSS boxes, the 2 transponders, and the top surface of the FEE have been installed. Spacecraft functional tests continue to be run, most recently confirming the functionality of the two transponders.

Photo: None available this week.

GSS SYSTEM DEMONSTRATES GYRO SPINUP MODE SUSPENSION
The GSS has successfully demonstrated the gyro 660 Hz spinup mode capability. The test was conducted using flight-like hardware coupled to the gyro simulator. The algorithm used in this test is directly applicable to the flight hardware and gives confidence that the GSS computer will fully meet the high computation demands of the full gyroscope system.

SUCCESSFULLY COMPLETED BATTERY ACCEPTANCE DATA REVIEW
The Gravity Probe B Team successfully completed the Acceptance Data Review of the two Flight Batteries at Eagle-Picher in Colorado Springs, Colorado.

Photo: Eric Foulk of Marshall Space Flight Center and Shawky Shehata of Lockheed Martin with one of the GP-B Flight Batteries at Eagle-Picher in Colorado Springs, Colorado.

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