Multi-swingby optimization of mission to Saturn using global optimization algorithms

摘要

cqvip:Based on the trajectory design of a mission toSaturn, this paper discusses four different trajectories in variousswingby cases. We assume a single impulse to be appliedin each case when the spacecraft approaches a celestial body.Some optimal trajectories of EJS, EMS, EVEJS and EVVEJSflying sequences are obtained using five global optimizationalgorithms: DE, PSO, DP, the hybrid algorithm PSODE andanother hybrid algorithm, DPDE. DE is proved to be superiorto other non-hybrid algorithms in the trajectory optimizationproblem. The hybrid algorithm of PSO and DE canimprove the optimization performance of DE, which is validatedby the mission to Saturn with given swingby sequences.Finally, the optimization results of four different swingbysequences are compared with those of the ACT of ES A.