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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/40522

Title: Design and optimization of low-thrust orbit transfers using Q-law and evolutionary algorithms
Authors: Lee, Seungwon
von Allmen, Paul
Fink, Wolfgang
Petropoulos, Anastassios
Terrile, Richard
Keywords: low-thrust orbit transfer
Q-law
evolutionary algorithms
Issue Date: 5-Mar-2005
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005.
Citation: IEEE Aerospace Conference, Big Sky, Montana, March 5-12, 2005.
Abstract: Future space missions will depend more on lowthrust propulsion (such as ion engines) thanks to its high specific impulse. Yet, the design of low-thrust trajectories is complex and challenging. Third-body perturbations often dominate the thrust, and a significant change to the orbit requires a long duration of thrust. In order to guide the early design phases, we have developed an efficient and efficacious method to obtain approximate propellant and flight-time requirements (i.e., the Pareto front) for orbit transfers. A search for the Pareto-optimal trajectories is done in two levels: optimal thrust angles and locations are determined by Q-law, while the Q-law is optimized with two evolutionary algorithms: a genetic algorithm and a simulated-annealing-related algorithm. The examples considered are several types of orbit transfers around the Earth and the asteroid Vesta.
URI: http://hdl.handle.net/2014/40522
Appears in Collections:JPL TRS 1992+

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