The results of studies of four reentry guidance and control techniques for the energy management of vehicles returning to the earth at escape speeds are compared in this paper. The reentry trajectories are constrained to those of direct descent, that is, where the vehicle does not leave that portion of the atmosphere where useful aerodynamic forces are available after its initial entry. The guidance techniques compared are: (1) a piloted simulator study reference trajectory techniques; 2) An automatic controller using reference trajectory techniques; 3) A predictor system employing linear prediction (perturbation) techniques; and 4) A repetitive prediction system employing rapid-time computer techniques.


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    Title :

    Guidance and Control During Direct-Descent Parabolic Reentry


    Contributors:

    Conference:

    NASA-Industry Appollo Technical Conference ; 1961 ; Washington, DC, United States


    Publication date :

    1961-11-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Guidance and control during direct-descent parabolic re-entry

    Foudriat, E.C. / Wingrove, R.C. | Engineering Index Backfile | 1961




    Exponential reentry guidance

    Kirby, M.J. / Klein, R.L. | Engineering Index Backfile | 1965