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Gravity-Assist Low-Thrust Inter-System Trajectory Design with Manifold Captures
(2022-04)
When traveling across multiple planetary or moon systems, invariant manifold structures may be leveraged to allow for efficient transfer within multi-body dynamics. However, the sole use of these structures is restrictive ...
Semi-Analytical Model for Design and Analysis of On-Orbit Servicing Architecture
(2020-05)
Robotic on-orbit servicing (OOS) is expected to be a key technology and concept for future sustainable space exploration. This paper develops a novel semi-analytical model for OOS system analysis, responding to the growing ...
Satellite Constellation Pattern Optimization for Complex Regional Coverage
(2020-09)
The use of regional coverage satellite constellations is on the rise, urging the need for an optimal constellation design method for complex regional coverage. Traditional constellations are often designed for continuous ...
Space Exploration Architecture and Design Framework for Commercialization
(2021-10)
The trend of space commercialization is changing the decision-making process for future space exploration architectures, and there is a growing need for a new decision-making framework that explicitly considers the ...
Flexibility Management for Space Logistics via Decision Rules
(2021-04)
This paper develops a flexibility management framework for space logistics mission planning under uncertainty through decision rules and multistage stochastic programming. It aims to add built-in flexibility to space ...
Space architecture design for commercial suitability: A case study in in-situ resource utilization systems
(2020-10)
Space Agencies are increasingly interested in stimulating non-traditional players to participate more broadly in the space enterprise. Historically, high barriers to entry in the space market have included challenges of ...
Spacecraft trajectory tracking and parameter estimation around a splitting contact binary asteroid
(2020-06)
Increasing interest in asteroid mining and in-situ resource utilization will lead to an increase in asteroid surface operations. The geophysical properties of asteroids are often unknown and play a significant role in the ...
Hierarchical Reinforcement Learning Framework for Stochastic Spaceflight Campaign Design
(2021-12)
This paper develops a hierarchical reinforcement learning architecture for multimission spaceflight campaign design under uncertainty, including vehicle design, infrastructure deployment planning, and space transportation ...
Event-Driven Network Model for Space Mission Optimization with High-Thrust and Low-Thrust Spacecraft
(2020-03)
Numerous high-thrust and low-thrust space propulsion technologies have been developed in the recent years with the goal of expanding space exploration capabilities; however, designing and optimizing a multi-mission campaign ...
Additive Manufacturing of Compliant Mechanisms for Deployable Aerospace Structures
(Georgia Institute of Technology, 2021-04-27)
In the past 10 years, complex deployable structures have become common on JPL CubeSats (e.g. RainCube, MARCO, ISARA) and large-scale spacecraft (e.g. SMAP, SWOT, NISAR, Starshade). As new, ambitious missions are pursued, ...