This paper describes a simple semi-analytic model for mass-optimized interplanetary solar electric low-thrust trajectories. A description is given of a model that accurately and quickly determines the performance of circular-coplanar low-thrust transfers with a series of simple empirical and physics-based relationships that can be implemented easily in a spreadsheet. The model takes flight time, departure and arrival velocity, initial power, initial mass, and propulsion-system efficiency as inputs and produces the optimum specific impulse, Δ v , final mass, and burn time that correspond to the mass-optimum trajectory as outputs. The development methodology is described, governing variables and fundamental relationships are identified, and a model is presented that efficiently calculates these parameters for a wide range of low-thrust trajectories. Models are presented for Earth-Jupiter/Trojan asteroid, Earth-Mars, Mars-Earth, Earth-Venus, and Earth-Main-Belt asteroid transfers using solar electric propulsion. The results show good agreement for estimates of both delivered mass ( + 8 / 15 % ) and optimum specific impulse ( + 20 / 20 % ). This model is well suited to classroom instruction, concurrent engineering, and the initial development of new mission concepts.


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    Titel :

    Simple Semi-Analytic Model for Optimized Interplanetary Low-Thrust Trajectories Using Solar Electric Propulsion


    Beteiligte:
    Oh, David Y. (Autor:in) / Landau, Damon (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2013-04-17


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch