Low-thrust trajectory design is tightly coupled with spacecraft systems design. In particular, the propulsion and power characteristics of a low-thrust spacecraft are major drivers in the design of the optimal trajectory. Accurate modeling of the power and propulsion behavior is essential for meaningful low-thrust trajectory optimization. In this work, we discuss new techniques to improve the accuracy of propulsion modeling in low-thrust trajectory optimization while maintaining the smooth derivatives that are necessary for a gradient-based optimizer. The resulting model is significantly more realistic than the industry standard and performs well inside an optimizer. A variety of deep-space trajectory examples are presented.


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    Title :

    Improved Propulsion Modeling for Low-Thrust Trajectory Optimization


    Contributors:

    Publication date :

    2017


    Size :

    19 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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