An efficient indirect method is presented to determine fuel-optimal many-revolution low-thrust transfers in the presence of Earth-shadow eclipses. Specifically, the events of shadow entrance and exit are modeled as interior-point constraints. Following the observation that an ill-conditioned state transition matrix may occur when the spacecraft flies over the edge of the shadow, a two-level continuation scheme is introduced to generate many-revolution trajectories. The established computational framework integrates analytic derivatives, switching detection, and continuation with an augmented flowchart, which yields discontinuous bang-bang solutions and their gradients. Transfers from a geostationary transfer orbit to a geostationary orbit are simulated to illustrate the effectiveness and efficiency of the method developed.


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    Title :

    Indirect Optimization of Fuel-Optimal Many-Revolution Low-Thrust Transfers With Eclipses


    Contributors:


    Publication date :

    2023-02-01


    Size :

    3573546 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English