A three-step process bridges the gap between lower-fidelity solutions that ignore optimal dynamics and fully optimized solutions that are computationally expensive to generate. First, analytic solutions for transfers with free time and angle characterize the evolution of the shape and orientation of the orbit. Next, optimal control theory supplies the thrust vector with variable specific impulse while satisfying flight time and transfer angle constraints. Transfers with the additional constraint of constant specific impulse then provide a more realistic thruster model for preliminary trade studies. These approximations deliver a hundredfold improvement in run time at the expense of a few percent error in mass.
Fast and Reliable Approximations for Interplanetary Low-Thrust Transfers
2017 American Institute of Aeronautics and Astronautics (AIAA) Astrodynamics Specialist Conference
;
2017
,
2018
;
Stevenson, WA, United States
2017 American Astronautical Society (AAS) Astrodynamics Specialist Conference
;
2017
;
Stevenson, WA, United States
21.08.2017
Aufsatz (Konferenz)
Keine Angabe
Englisch
Optimization of Low-Thrust Interplanetary Transfers
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