For Exploration Missions 1 and 2, the Orion capsules will be entering the Earth's atmosphere with speeds in excess of 11 km/s. In the event of a degraded Guidance, Navigation, and Control system, attempting the nominal guided entry may be inadvisable due to the potential for failures that result in a loss of vehicle (or crew, when crew are aboard). In such a case, a method of assuring Earth capture, water landing, and observence of trajectory constraints (heating, loads) is desired. Such a method should also be robust to large state uncertainty and variations in entry interface states. This document will explore four approaches evaluated and their performance in ensuring a safe return of the Orion capsule in the event of onboard system degradation.


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    Title :

    Lunar Entry Downmode Options for Orion


    Contributors:

    Conference:

    AAS/AIAA Space Flight Mechanics Meeting ; 2016 ; Napa, CA, United States


    Publication date :

    2016-02-14


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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