The Microwave Anisotropy Probe (MAP) is a follow-on to the Differential Microwave Radiometer (DMR) instrument on the Cosmic Background Explorer (COBE). Due to the MAP project's limited mass, power, and financial resources, a traditional reliability concept including fully redundant components was not feasible. The MAP design employs selective hardware redundancy, along with backup software modes and algorithms, to improve the odds of mission success. In particular, MAP's propulsion system, which is used for orbit maneuvers and momentum management, uses eight thrusters positioned and oriented in such a way that its thruster-based attitude control modes can maintain three-axis attitude control in the event of the failure of any one thruster.


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    Title :

    Restoring Redundancy to the MAP Propulsion System


    Contributors:
    J. R. O'Donnell (author) / G. T. Davis (author) / D. K. Ward (author)

    Publication date :

    2002


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Restoring Redundancy to the MAP Propulsion System

    ODonnell, James R., Jr. / Davis, Gary T. / Ward, David K. et al. | NTRS | 2002


    Restoring Redundancy to the MAP Propulsion System

    O'Donnell, James R., Jr. / Davis, Gary T. / Ward, David K. et al. | NTRS | 2002


    Restoring Redundancy to the MAP Propulsion System

    J. R. ODonnell / G. T. Davis / D. K. Ward | NTIS | 2002


    Restoring Redundancy to the MAP Propulsion System

    O'Donnell, James / Davis, Gary / Ward, David | AIAA | 2002