Low-thrust trajectory design techniques with a focus on maintaining constant energy

Analytical solutions to complex trajectory design problems are scarce, since only a few specific cases allow for closed-form solutions. The main purpose of this dissertation is to design simple algorithms for trajectory design using continuous thrust, with a focus on low-thrust applications. By “sim...

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Bibliographic Details
Main Author:	Hernandez, Sonia, active 21st century
Format:	Others
Published:	2014
Subjects:	Low-thrust Trajectory design Orbit transfer Lyapunov control Closed-loop guidance Perturbation theory
Online Access:	http://hdl.handle.net/2152/25883

id	ndltd-UTEXAS-oai-repositories.lib.utexas.edu-2152-25883
record_format	oai_dc
spelling	ndltd-UTEXAS-oai-repositories.lib.utexas.edu-2152-258832015-09-20T17:25:04ZLow-thrust trajectory design techniques with a focus on maintaining constant energyHernandez, Sonia, active 21st centuryLow-thrustTrajectory designOrbit transferLyapunov controlClosed-loop guidancePerturbation theoryAnalytical solutions to complex trajectory design problems are scarce, since only a few specific cases allow for closed-form solutions. The main purpose of this dissertation is to design simple algorithms for trajectory design using continuous thrust, with a focus on low-thrust applications. By “simple” here we seek to achieve algorithms that either admit an analytical solution, or require minimal input by the user and minimal computation time. The three main contributions of this dissertation are: designing Lyapunov-based closed-loop guidance laws for orbit transfers, finding semi-analytical solutions using a constant magnitude thrust, and perturbation theory for approximate solutions to low-thrust problems. The technical aspect that these problems share in common is that they all use, fully or partially, a thrusting model in which the energy of the system is kept constant. Many orbit transfer problems are shown to be solved with this thrusting protocol.text2014-09-15T20:58:28Z2014-082014-09-11August 20142014-09-15T20:58:29ZThesisapplication/pdfhttp://hdl.handle.net/2152/25883
collection	NDLTD
format	Others
sources	NDLTD
topic	Low-thrust Trajectory design Orbit transfer Lyapunov control Closed-loop guidance Perturbation theory
spellingShingle	Low-thrust Trajectory design Orbit transfer Lyapunov control Closed-loop guidance Perturbation theory Hernandez, Sonia, active 21st century Low-thrust trajectory design techniques with a focus on maintaining constant energy
description	Analytical solutions to complex trajectory design problems are scarce, since only a few specific cases allow for closed-form solutions. The main purpose of this dissertation is to design simple algorithms for trajectory design using continuous thrust, with a focus on low-thrust applications. By “simple” here we seek to achieve algorithms that either admit an analytical solution, or require minimal input by the user and minimal computation time. The three main contributions of this dissertation are: designing Lyapunov-based closed-loop guidance laws for orbit transfers, finding semi-analytical solutions using a constant magnitude thrust, and perturbation theory for approximate solutions to low-thrust problems. The technical aspect that these problems share in common is that they all use, fully or partially, a thrusting model in which the energy of the system is kept constant. Many orbit transfer problems are shown to be solved with this thrusting protocol. === text
author	Hernandez, Sonia, active 21st century
author_facet	Hernandez, Sonia, active 21st century
author_sort	Hernandez, Sonia, active 21st century
title	Low-thrust trajectory design techniques with a focus on maintaining constant energy
title_short	Low-thrust trajectory design techniques with a focus on maintaining constant energy
title_full	Low-thrust trajectory design techniques with a focus on maintaining constant energy
title_fullStr	Low-thrust trajectory design techniques with a focus on maintaining constant energy
title_full_unstemmed	Low-thrust trajectory design techniques with a focus on maintaining constant energy
title_sort	low-thrust trajectory design techniques with a focus on maintaining constant energy
publishDate	2014
url	http://hdl.handle.net/2152/25883
work_keys_str_mv	AT hernandezsoniaactive21stcentury lowthrusttrajectorydesigntechniqueswithafocusonmaintainingconstantenergy
_version_	1716823902976475136

Low-thrust trajectory design techniques with a focus on maintaining constant energy

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