The Microwave Anisotropy Probe (MAP) utilized a phasing loop/lunar encounter strategy to achieve a small amplitude Lissajous orbit about the Sun-Earth/Moon L2 libration point. The use of phasing loops was key in minimizing MAP's overall deltaV needs while also providing ample opportunities for contingency resolution. This paper will discuss the different contingencies and responses studied for MAP. These contingencies included accommodating excessive launch vehicle errors (beyond 3 sigma), splitting perigee maneuvers to achieve ground station coverage through the Deep Space Network (DSN), delaying the start of a perigee maneuver, aborting a perigee maneuver in the middle of execution, missing a perigee maneuver altogether, and missing the lunar encounter (crucial to achieving the final Lissajous orbit). It is determined that using a phasing loop approach permits many opportunities to correct for a majority of these contingencies.
Contingency Planning for the Microwave Anisotropy Probe Mission
AIAA/AAS Astrodynamics Specialist Conference ; 2002 ; Monterey, CA, United States
2002-01-01
Preprint
Keine Angabe
Englisch
AIAA-2002-4426 Contingency Planning for the Microwave Anisotropy Probe Mission
British Library Conference Proceedings | 2002
|The Microwave Anisotropy Probe (MAP) Mission
NTRS | 2002
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