A closed-loop guidance strategy for time and fuel optimal reboost of Space Station Freedom is discussed in this paper. The reboost maneuver is formulated as an optimal control problem rather than a parameter optimization problem, the parameters being the thrust switching times. In the present approach the thrust switching structure need not be prescribed a priori to solve the resulting two point boundary value problem. Non-optimality of singular control or intermediate thrust is proved by utilizing the second order Kelley condition or the Generalized Legendre-Clebsch condition. Only a few sets of initial co-states and time-to-go guess values need to be stored on-board for a wide range of reboost scenarios.


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    Titel :

    A time optimal Space Station reboost guidance strategy


    Beteiligte:
    Kumar, Renjith R. (Autor:in) / Seywald, Hans (Autor:in)

    Kongress:

    AAS and AIAA, Spaceflight Mechanics Meeting ; 1993 ; Pasadena, CA, United States


    Erscheinungsdatum :

    1993-02-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




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