In earlier investigations, the adaptation and implementation of a modified two-level corrections process as the onboard targeting algorithm for the Trans-Earth Injection phase of Orion is presented. The objective of that targeting algorithm is to generate the times of ignition and magnitudes of the required maneuvers such that the desired state at entry interface is achieved. In an actual onboard flight software implementation, these times of ignition and maneuvers are relayed onto Flight Control for command and execution. Although this process works well when the burn durations or burn arcs are small, this might not be the case during a contingency situation when lower thrust engines are employed to perform the maneuvers. Therefore, a new version of the modified two-level corrections process is formulated to handle the case of finite burn arcs. This paper presents the development and formulation of that finite burn modified two-level corrections process which can again be used as an onboard targeting algorithm for the Trans-Earth Injection phase of Orion. Additionally, performance results and a comparison between the two methods are presented. The finite burn two-level corrector formulation presented here ensures the entry constraints at entry interface are still met without violating the available fuel budget, while still accounting for much longer burn times in its design.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    An Autonomous Onboard Targeting Algorithm Using Finite Thrust Maneuvers


    Beteiligte:

    Kongress:

    AIAA Guidance, Navigation, and Control Conference ; 2009 ; Chicago, IL, United States


    Erscheinungsdatum :

    2009-08-10


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    An Autonomous Onboard Targeting Algorithm Using Finite Thrust Maneuvers

    Scarritt, S. / Marchand, B. / Weeks, M. et al. | British Library Conference Proceedings | 2009


    An Autonomous Onboard Targeting Algorithm Using Finite Thrust Maneuvers

    Scarritt, Sara / Marchand, Belinda / Weeks, Michael | AIAA | 2009



    Onboard Development of Autonomous Low-Thrust Guidance

    Ozimek, Martin / Shannon, Jackson / Power, Rolfe et al. | IEEE | 2023


    Onboard Planning of Collision Avoidance Maneuvers Using Robust Optimization

    Mueller, J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2009