A guidance method for the space shuttle's transition from hypersonic entry to subsonic cruising flight is presented. The method evolves from a numerical trajectory optimization technique in which kinetic energy and total energy (per unit weight) replace velocity and time in the dynamic equations. This allows the open end-time problem to be transformed to one of fixed terminal energy. In its ultimate form, 'E-Guidance' obtains energy balance (including dynamic-pressure-rate damping) and path length control by angle-of-attack modulation and cross-range control by roll angle modulation. The guidance functions also form the basis for a pilot display of instantaneous maneuver limits and destination. Numerical results illustrate the E-Guidance concept and the optimal trajectories on which it is based.


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    Title :

    Optimal guidance for the space shuttle transition.


    Contributors:

    Conference:

    International Astronautical Federation, International Astronautical Congress ; 1972 ; Vienna, Austria


    Publication date :

    1972-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :





    Space shuttle guidance

    Causey, W. E. | NTRS | 1970


    Space Shuttle Guidance

    W. E. Causey | NTIS | 1970