WEEKLY HIGHLIGHTS FOR WEEK ENDING 25 December 1998:
Under the direction of Robert Brumley a fourth science mission gyroscope has passed all of its commissioning tests. Since a total of 4 gyroscopes are required for the GP-B mission, this most recent commissioned gyroscope completes the minimum program need and thus represents a major program achievement. The gyroscope testing team responsible for this work included Robert Brumley, Dave Hipkins, Paul Bayer, Chris Gray, and Bruce Clarke. Photo: a gyroscope in its housing with cables attached.
A successful interference test of the Relativity Mission (GP-B) Global Positioning System (GPS) was performed on December 16 in LMMS building 251. The test objective was to determine whether Tracking and Data Relay Satellite System (TDRSS) transponder operation through the space vehicle low gain antenna would cause interference to the on-board GPS system. Using a worst-case GPS setup and with the TDRS antenna pointing directly at the GPS antenna, the GPS receiver was still able to track GPS satellites and calculate position. Photo: Dave Yale (of Stanford University), Ted Gill (of LMMS) and Awele Ndili (of Stanford University) setting up TDRS/GPS interference test.