Performance Assessment of Convex Low-Thrust Trajectory Optimization Methods

Low - Thrust Trajectory Optimization Using Stochastic Optimization Methods

Low-Thrust, High-Accuracy Trajectory Optimization

Multirevolution, very low-thrust trajectory optimization problems have long been considered difficult problems due to their large time scales and high-frequency responses. By relating this difficulty to the well-known problem of aliasing in information theory, an antialiasing trajectory optimization method is developed. The method is based on Bellman’s principle of optimality and is extremely s...

Low-thrust Trajectory Optimization with Simplified Sqp Algorithm

The problem of low-thrust trajectory optimization in highly perturbed dynamics is a stressing case for many optimization tools. Highly nonlinear dynamics and continuous thrust are each, separately, non-trivial problems in the field of optimal control, and when combined, the problem is even more difficult. This paper describes a fast, robust method to design a trajectory in the CRTBP (circular r...

Global Low-Thrust Trajectory Optimization through Hybridization of a Genetic Algorithm and a Direct Method

To expand mission capabilities needed for exploration of the Solar System, optimal lowthrust trajectories must be found. However, low-thrust, multiple gravity-assist trajectories pose significant optimization challenges because of their expansive, multimodal design space. Here, a novel technique is developed for global, low-thrust, interplanetary trajectory optimization through the hybridizatio...

Low-Thrust Trajectory Optimization and Interplanetary Mission Analysis Using Evolutionary Neurocontrol

Innovative solar system exploration missions require ever larger velocity increments and thus ever more demanding propulsion capabilities. Using for those high-energy missions the stateof-the-art technique of chemical propulsion in combination with (eventually multiple) gravity assist maneuvers results in long, complicated, and inflexible mission profiles. Low-thrust propulsions systems can sig...