1998 MARS SURVEYOR PROJECT
STATUS REPORT
October 9, 1998
John McNamee
Mars Surveyor 98 Project Manager
Mars Climate Orbiter:
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.
Mars Polar Lander:
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 Movie
Mars Climate Orbiter Spacecraft At
Kennedy Space Center
October 8, 1998
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Mars Climate Orbiter
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MPEG Movie - 1.9 MB - October 8, 1998
MPEG Movie - 1.8 MB - October 9, 1998
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