The complexities in using indirect optimization methods get compounded for practical co-optimization problems in the presence of continuous and discrete design variables. In this paper, realistic multimode electric propulsion systems are incorporated within the formulation of gravity-assist, low-thrust trajectory design problems. Electric thrusters operate over a large set of discrete operation modes, and each mode is characterized by specific values for power, thrust, specific impulse, and mass flow rate. Unlike the traditional methods that approximate the aggregate behavior of electric thrusters’ performance (using polynomials fits), a novel construct is proposed to incorporate optimal discrete operating modes within indirect optimization. The capability of the tool and the efficacy of the proposed methodology are demonstrated by solving a multiyear, fuel-optimal trajectory problem from Earth to asteroid Psyche via a Mars gravity-assist maneuver and using a Hall-effect SPT-140 thruster with 21 operating modes. Comparisons with the traditional polynomial-based thruster modeling are presented.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Low-Thrust Gravity-Assist Trajectory Design Using Optimal Multimode Propulsion Models


    Beteiligte:
    Arya, Vishala (Autor:in) / Taheri, Ehsan (Autor:in) / Junkins, John L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2021-05-11


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    GRAVITY-ASSIST FUEL-OPTIMAL LOW-THRUST TRAJECTORY DESIGN USING HYBRID OPTIMIZATION TECHNIQUES

    Arya, Vishala / Taheri, Ehsan / Woollands, Robyn et al. | TIBKAT | 2020


    Optimal Gravity-Assist Low-Thrust Trajectory Using a Robust Homotopic Approach

    Saghamanesh, Mohammadreza / Baoyin, Hexi | IEEE | 2018



    Optimal Low-Thrust Escape Trajectories Using Gravity Assist

    Lorenzo Casalino / Guido Colasurdo / Dario Pastrone | AIAA | 1999


    Trajectory Optimization for a Mission to NEOS, Using Low-Thrust Propulsion and Gravity Assist (AAS 03-120)

    Massari, M. / Bernelli-Zazzera, F. / Vasile, M. et al. | British Library Conference Proceedings | 2003