The fuel-optimal control problem in aeroassisted noncoplanar orbital transfer is addressed. The equations of motion for the atmospheric maneuver are nonlinear and the optimal (nominal) trajectory and control are obtained. In order to follow the nominal trajectory under actual conditions, a neighboring optimum guidance scheme is designed using linear quadratic regulator theory for onboard real-time implementation. One of the state variables is used as the independent variable in preference to the time. The weighting matrices in the performance index are chosen by a combination of a heuristic method and an optimal modal approach. The necessary feedback control law is obtained in order to minimize the deviations from the nominal conditions. The results are presented to a typical aeroassisted noncoplanar orbital transfer problem.


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    Title :

    Neighboring optimal guidance for aeroassisted noncoplanar orbital transfer


    Contributors:

    Conference:

    AIAA Atmospheric Flight Mechanics Conference ; 1991 ; New Orleans, LA, United States


    Publication date :

    1991-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





    Neighboring optimal guidance for aeroassisted orbital transfer

    Naidu, D. S. / Hibey, Joseph L. / Charalambous, C. D. | NTRS | 1993


    Neighboring optimal guidance for aeroassisted orbital transfer

    Naidu, D.S. / Hibey, J.L. / Charalambous, C.D. | IEEE | 1993