Two separate Mars lander touchdown scenarios arc considered and compared o a baseline study with the goal of minimizing the landed distance to a specified location on the Mars surface. This study considers a set of points from parachute handoff to touchdown on the surface. The first scenario examines the effect of thrust vectoring while the parachute is deployed and includes an algorithm for determining targeting initial guesses. The second considers a reverse gravity turn lo a hover condition 500 meters above!meterstl e surface and then uses lateral thrusting to minimize the range to target. The effects of both scenarios on fuel usage targeting and targeting success are discussed.


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    Title :

    An Investigation of Terminal Guidance and Control Techniques for a Robotic Mars Lander


    Contributors:

    Publication date :

    1999-05-13


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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