1998 MARS SURVEYOR PROJECT STATUS REPORT
October 9, 1998
Mars Surveyor 98 Project Manager
Orbiter launch processing activities are proceeding on schedule in the Spacecraft Assembly and Encapsulation Facility (SAEF-2) facility at Kennedy Space Center (KSC). Deep Space Network (DSN) end-to-end compatibility testing was accomplished successfully. Flight software build 8.0.1 was loaded on the orbiter and mission profile tests were run successfully on sides A and B. Build 8.0.1 contains the identified fix to the processor reset problem that has been intermittent over the past year.
Based on a further review of failure analysis data, the Project has decided to inspect and replace cracked glass body diodes on the orbiter Pyro Initiation Unit (PIU). The flight PIU will be replaced with an electrical test unit made up of spare flight boards in order to continue the mission system test program uninterrupted.
Mechanical tear down of the lander is proceeding on schedule to support the reinstallation of the reworked Power Distribution and Drive Unit (PDDU) and Command and Data Handling (C&DH) box. In addition, the Project has decided to inspect and replace cracked glass body diodes on the lander Pyro Initiation Unit (PIU) based on a further review of failure analysis data. Two cracked diodes were replace and 11 coating defects reworked (out of approximately 500 diodes) on the PIU. The lander heat shield, cruise stage, backshell, solar arrays, radar, and component deck have been demated successfully. The reworked PDDU and C&DH have been delivered to KSC and will be reinstalled on the lander on October 10 to support an electrical aliveness test on October 12. The reworked PIU will be reinstalled on the lander on October 19.
Time Lapse MovieMars Climate Orbiter Spacecraft At Kennedy Space Center
October 8, 1998
Mars Climate Orbiter
MPEG Movie - 1.9 MB - October 8, 1998
MPEG Movie - 1.8 MB - October 9, 1998
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