A new probability-one homotopy method for solving minimum-time low-thrust orbital transfer problems
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3420-0
Abstract: Homotopy methods have been widely utilized to solve low-thrust orbital transfer problems, however, it is not guaranteed that the optimal solution can be obtained by the existing homotopy methods. In this paper, a new homotopy… read more here.
Keywords: probability one; thrust orbital; low thrust; homotopy ... See more keywords
Analytical solutions for low-thrust orbit transfers
Sign Up to like & getrecommendations! Published in 2021 at "Celestial Mechanics and Dynamical Astronomy"
DOI: 10.1007/s10569-021-10033-9
Abstract: This paper presents analytical solutions for the estimation of the $$\Delta V$$ Δ V cost of the transfer of a spacecraft subject to a low-thrust action. The equations represent an extension of solutions already available… read more here.
Keywords: paper; transfers analytical; low thrust; analytical solutions ... See more keywords
A new method for optimization of low-thrust gravity-assist sequences
Sign Up to like & getrecommendations! Published in 2017 at "CEAS Space Journal"
DOI: 10.1007/s12567-017-0147-7
Abstract: Recently missions like Hayabusa and Dawn have shown the relevance and benefits of low-thrust spacecraft concerning the exploration of our solar system. In general, the efficiency of low-thrust propulsion is one means of improving mission… read more here.
Keywords: gravity assist; optimization; low thrust; thrust ... See more keywords
On-board orbit determination for low thrust LEO-MEO transfer by Consider Kalman Filtering and multi-constellation GNSS
Sign Up to like & getrecommendations! Published in 2017 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2017.05.029
Abstract: Abstract In the framework of the novel navigation scenario offered by the next generation satellite low thrust autonomous LEO-to-MEO orbit transfer, this study proposes and tests a GNSS based navigation system aimed at providing on-board… read more here.
Keywords: kalman filtering; leo meo; low thrust; transfer ... See more keywords
Lyapunov-based low-energy low-thrust transfers to the Moon
Sign Up to like & getrecommendations! Published in 2019 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2019.05.058
Abstract: Abstract This paper investigates the numerical computation of low-fuel low-thrust Earth-Moon transfers in a full ephemeris model incorporating the gravitational influence of the Sun, the Moon and all planets of the solar system plus the… read more here.
Keywords: control; low energy; low thrust; based low ... See more keywords
Attitude control: A key factor during the design of low-thrust propulsion for CubeSats
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.03.053
Abstract: Abstract Orbital capability is a decisive step forward for nanosatellites in general and CubeSats in particular. Although trajectory maneuvers and their implementation have been thoroughly studied for classical satellites, the high level of constraints on… read more here.
Keywords: trajectory; control; low thrust; attitude control ... See more keywords
Shaping low-thrust trajectories with thrust-handling feature
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Space Research"
DOI: 10.1016/j.asr.2017.11.006
Abstract: Abstract Shape-based methods are becoming popular in low-thrust trajectory optimization due to their fast computation speeds. In existing shape-based methods constraints are treated at the acceleration level but not at the thrust level. These two… read more here.
Keywords: trajectories thrust; thrust trajectories; shape based; shaping low ... See more keywords
A robust homotopic approach for continuous variable low-thrust trajectory optimization
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Space Research"
DOI: 10.1016/j.asr.2018.08.046
Abstract: Abstract This paper presents an improved understanding of the interaction of hybrid optimization method with variable low-thrust trajectory optimization requirements. To analyze fuel-optimal bang-bang control problem, a new version of homotopic algorithm, termed robust homotopic… read more here.
Keywords: homotopic; low thrust; optimization; approach ... See more keywords
Low-thrust spacecraft trajectory optimization via a DNN-based method
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Space Research"
DOI: 10.1016/j.asr.2020.05.046
Abstract: Abstract Initial solution guess has a significant impact on the convergence of indirect methods, especially for continuous low-thrust trajectory optimization problems. In this study, an intelligent initial solution supplying approach based on deep neural networks… read more here.
Keywords: trajectory optimization; dnn based; low thrust;
Robust Low-Thrust Trajectory Optimization Using Convex Programming and a Homotopic Approach
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2021.3128869
Abstract: A robust algorithm to solve the low-thrust fuel-optimal trajectory optimization problem for interplanetary spacecraft is developed in this article. The original nonlinear optimal control problem is convexified and transformed into a parameter optimization problem using… read more here.
Keywords: low thrust; homotopic approach; trajectory optimization; convex programming ... See more keywords
Indirect Optimization of Fuel-Optimal Many-Revolution Low-Thrust Transfers With Eclipses
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2022.3189330
Abstract: An efficient indirect method is presented to determine fuel-optimal many-revolution low-thrust transfers in the presence of Earth-shadow eclipses. Specifically, the events of shadow entrance and exit are modeled as interior-point constraints. Following the observation that… read more here.
Keywords: low thrust; fuel optimal; revolution low; revolution ... See more keywords