Commercial lunar propellant architecture: A collaborative study of lunar propellant production

D Kornuta, A Abbud-Madrid, J Atkinson, J Barr… - Reach, 2019‏ - Elsevier
Aside 2 from Earth, the inner solar system is like a vast desert where water and other
volatiles are scarce. An old saying is,“In the desert, gold is useless and water is priceless.” …

Towards an extension of equivalent system mass for human exploration missions on Mars

D Ho, G Makrygiorgos, A Hill, AJ Berliner - npj Microgravity, 2022‏ - nature.com
NASA mission systems proposals are often compared using an equivalent system mass
(ESM) framework, wherein all elements of a technology to deliver an effect—its components …

Optimal deployment of satellite mega-constellation

T Sung, J Ahn - Acta Astronautica, 2023‏ - Elsevier
This paper proposes an optimization framework to deploy a large satellite constellation. The
proposed framework consists of two phases: the mission viability evaluation phase and the …

Integrated space logistics mission planning and spacecraft design with mixed-integer nonlinear programming

H Chen, K Ho - Journal of Spacecraft and Rockets, 2018‏ - arc.aiaa.org
This paper develops a campaign-level space logistics optimization framework that
simultaneously considers mission planning and spacecraft design using mixed-integer …

Integrated in-situ resource utilization system design and logistics for mars exploration

H Chen, TS du Jonchay, L Hou, K Ho - Acta Astronautica, 2020‏ - Elsevier
This paper develops an interdisciplinary space architecture optimization framework to
analyze the tradeoff on in-situ resource utilization options, identify technology gaps, evaluate …

Multidisciplinary design optimization approach to integrated space mission planning and spacecraft design

M Isaji, Y Takubo, K Ho - Journal of Spacecraft and Rockets, 2022‏ - arc.aiaa.org
Space mission planning and spacecraft design are tightly coupled and need to be
considered together for optimal performance; however, this integrated optimization problem …

[HTML][HTML] A primer to new space business-Beyond “Business in space: The new frontier”(Goodrich, Kitmacher and Amtey, 1987)

SH Fuchs, T Vorley, MJ Ventresca - Journal of Business Venturing Insights, 2024‏ - Elsevier
The purpose of this article is to serve as a primer and gateway to contemporary
developments around New Space as an entrepreneurial phenomenon. Despite its media …

Framework for modeling and optimization of on-orbit servicing operations under demand uncertainties

T Sarton du Jonchay, H Chen… - Journal of Spacecraft …, 2021‏ - arc.aiaa.org
This paper develops a framework that models and optimizes the operations of complex on-
orbit servicing infrastructures involving one or more servicers and orbital depots to provide …

Campaign-level dynamic network modelling for spaceflight logistics for the flexible path concept

K Ho, OL De Weck, JA Hoffman, R Shishko - Acta Astronautica, 2016‏ - Elsevier
This paper develops a network optimization formulation for dynamic campaign-level space
mission planning. Although many past space missions have been designed mainly from a …

Hierarchical reinforcement learning framework for stochastic spaceflight campaign design

Y Takubo, H Chen, K Ho - Journal of Spacecraft and rockets, 2022‏ - arc.aiaa.org
This paper develops a hierarchical reinforcement learning architecture for multimission
spaceflight campaign design under uncertainty, including vehicle design, infrastructure …