Overview of the Development for a Suite of Low-Thrust Trajectory Analysis Tools

Kos, Larry; Polsgrove, Tara; Hopkins, Randall C.; Thomas, Dan; Sims, Jon

doi:10.2514/6.2006-6743

Cited by 8 publications

(6 citation statements)

References 5 publications

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“…The most common indirect method is the indirect single shooting. It has been implemented in the tools SEPTOP (Solar Electric Propulsion Trajectory Optimization Program) [43], VARITOP (VARIational calculus Trajectory Optimization Program) [42], NEWSEP (NEW Solar Electric Propulsion trajectory optimization program) [44], and SAIL [45]. These tools have been developed at the Jet Propulsion Laboratory (JPL) and they are part of the Low-Thrust Trajectory Tool Suite (LTTT).…”

Section: Indirect Methodsmentioning

confidence: 99%

A Survey on Low-Thrust Trajectory Optimization Approaches

2021

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In this paper, we provide a survey on available numerical approaches for solving low-thrust trajectory optimization problems. First, a general mathematical framework based on hybrid optimal control will be presented. This formulation and their elements, namely objective function, continuous and discrete state and controls, and discrete and continuous dynamics, will serve as a basis for discussion throughout the whole manuscript. Thereafter, solution approaches for classical continuous optimal control problems will be briefly introduced and their application to low-thrust trajectory optimization will be discussed. A special emphasis will be placed on the extension of the classical techniques to solve hybrid optimal control problems. Finally, an extensive review of traditional and state-of-the art methodologies and tools will be presented. They will be categorized regarding their solution approach, the objective function, the state variables, the dynamical model, and their application to planetocentric or interplanetary transfers.

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Section: Indirect Methodsmentioning

confidence: 99%

A Survey on Low-Thrust Trajectory Optimization Approaches

2021

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“…The results for the remainder of the missions can be found on the LTTT website. Instructions and guidelines for using the website are given in a companion paper by Larry Kos, "Overview of the Development of a Suite of LowThrust Trajectory Analysis Tools" [1].…”

Section: The Reference Missionsmentioning

confidence: 99%

“…This 4 year project has resulted in the most capable tools for low thrust trajectory optimization ever demonstrated. [1] During this development process each tool was tested against a set of 32 reference missions. This mission list is relevant to future NASA science needs and provides each tool the opportunity to demonstrate its range of capabilities.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Performance Predictions for New Low-Thrust Trajectory Tools

Polsgrove

Kos

Hopkins

et al. 2006

AIAA/AAS Astrodynamics Specialist Conference and Exhibit

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Condensed AbstractSeveral low thrust trajectory optimization tools have been developed over the last 4 years by the Low Thrust Trajectory Tools development team. This toolset includes low, medium, and high fidelity tools. These tools were tested using a set of reference trajectories that exercised each tool's unique capabilities. This paper compares the performance predictions of the various tools for several of the reference trajectories. The intent is to verify agreement between the high fidelity tools and to quantify the performance prediction differences between tools of different fidelity levels. Several low thrust trajectory optimization tools have been developed over the last 4 years by the Low Thrust Trajectory Tools development team. This toolset includes both low-medium fidelity and high fidelity tools which allow the analyst to quickly research a wide mission trade space and perform advanced mission design. These tools were tested using a set of reference trajectories that exercised each tool's unique capabilities. This paper compares the performance predictions of the various tools against several of the reference trajectories. The intent is to verify agreement between the high fidelity tools and to quantify the performance prediction differences between tools of different fidelity levels.

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“…It has been implemented in the tools SEPTOP (Solar Electric Propulsion Trajectory Optimization Program)[150], VAR-ITOP (VARIational calculus Trajectory Optimization Program)[149], NEWSEP (NEW Solar Electric Propulsion trajectory optimization program)[151], and SAIL[152]. These tools have been developed at the Jet Propulsion Laboratory (JPL) and they are part of the Low-Thrust Trajectory Tool Suite (LTTT).…”

mentioning

confidence: 99%

“…They have been extensively used to design a variety of missions. For instance, NEWSEP provided trajectory support for the Deep Space 1 mission[152]. Runtimes for these tools range from hours to days[152], especially for those trajectories with numerous intermediate flybys.…”

mentioning

confidence: 99%

Heuristic method based on Generalized Logarithmic Spirals for Low-Thrust trajectory design

González

Sanjurjo-Rivo

Arnedo

2016

AIAA/AAS Astrodynamics Specialist Conference

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Department of Bioengineering and Aerospace EngineeringHybrid Multi-Objective Trajectory Optimization of Low-Thrust Space Mission Design by David Morante GonzálezThe overall goal of this dissertation is to develop multi-objective optimization algorithms for computing low-thrust trajectories. The thesis is motivated by the increasing number of space projects that will benefit from low-thrust propulsion technologies to gain unprecedented scientific, economic and social return. The low-cost design of such missions and the inclusion of concurrent engineering practices during the preliminary design phase demand advanced tools to rapidly explore different solutions and to benchmark them with respect to multiple conflicting criteria. However, the determination of optimal low-thrust transfers is a challenging task and remains an active research field that seeks performance improvements. This work contributes to increase the efficiency of searching wide design spaces, reduce the amount of necessary human involvement, and enhance the capabilities to include complex operational constraints. To that end, the general low-thrust trajectory optimization problem is stated as a multi-objective Hybrid Optimal Control Problem. This formulation allows to simultaneously optimize discrete decisionmaking processes, discrete dynamics, and the continuous low-thrust steering law. Within this framework, a sequential two-step solution approach is devised for two different scenarios. ContentsAcknowledgements v

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Overview of the Development for a Suite of Low-Thrust Trajectory Analysis Tools

Cited by 8 publications

References 5 publications

A Survey on Low-Thrust Trajectory Optimization Approaches

A Survey on Low-Thrust Trajectory Optimization Approaches

Comparison of Performance Predictions for New Low-Thrust Trajectory Tools

Heuristic method based on Generalized Logarithmic Spirals for Low-Thrust trajectory design

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