MARS SURVEYOR 98 MISSION STATUS
August 11, 1999
Mars Climate Orbiter (MCO)
The MCO spacecraft continues to perform well in cruise, with no scheduled activities during the past week. The flight team conducted its first Operational Readiness Test (ORT) on Tuesday and Wednesday (August 10-11), in preparation for Mars Orbit Insertion (MOI) and the Period Reduction Maneuver (PRM) next month. In addition, evaluation of telemetry from the solar array gimbal drive following Trajectory Correction Maneuver #3 (TCM-3) on July 25 continues, in preparation for an in-flight checkout of the two-axis drive to verify its integrity. Command preparation for the in-flight checkout is underway, targeting for transmission to the spacecraft on Wednesday, Aug. 18.
MARS CLIMATE ORBITER IS 43 DAYS FROM MARS ORBIT INSERTION.
Mars Polar Lander (MPL)
Mars Polar Lander experienced a quiet week in flight, given the flight team's focus on the MOI/PRM ORT. The Entry/Descent/Landing (EDL) system test effort is well underway now in the MPL simulator facility in Denver. The EDL test team is approximately 1/3 through a set of 24 test cases slated for execution, covering a range of nominal, off-nominal, and fault scenarios.
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