| An integrated hybrid transportation architecture for human Mars expeditions RG Merrill, P Chai, CA Jones, DR Komar, M Qu AIAA Space 2015 Conference and Exposition, 4442, 2015 | 34 | 2015 |
| Mars Hybrid Propulsion System Trajectory Analysis, Part I: Crew Missions P Chai, RG Merrill, M Qu AIAA SPACE 2015 Conference and Exposition, 4443, 2015 | 29 | 2015 |
| NASA's Strategic Analysis Cycle 2021 (SAC21) Human Mars Architecture MA Rucker, DA Craig, LM Burke, PR Chai, MB Chappell, BG Drake, ... 2022 IEEE Aerospace Conference (AERO), 1-10, 2022 | 25 | 2022 |
| Cryogenic thermal system analysis for orbital propellant depot PR Chai, AW Wilhite Acta Astronautica 102, 35-46, 2014 | 17 | 2014 |
| Comparing trash disposal to use as radiation shielding for a Mars transit vehicle M Ewert, J Broyan, E Semones, K Goodliff, P Chai, R Singleterry, L Abston, ... 47th International Conference on Environmental Systems, 2017 | 16 | 2017 |
| Human Mars Mission In-Space Transportation Sensitivity for Nuclear Electric/Chemical Hybrid Propulsion P Chai, M Qu, B Saputra AIAA Propulsion and Energy 2021 Forum, 3237, 2021 | 15 | 2021 |
| Mars Hybrid Propulsion System Trajectory Analysis, Part II: Cargo Missions P Chai, RG Merrill, M Qu AIAA SPACE 2015 Conference and Exposition, 4444, 2015 | 14 | 2015 |
| Hybrid transportation system integrated trajectory design and optimization for Mars landing site accessibility P Chai, M Qu, RG Merrill, KG Pfrang AIAA Propulsion and Energy 2019 Forum, 3961, 2019 | 12 | 2019 |
| Evolved Human Space Exploration Architecture Using Commercial Launch/Propellant Depots A Wilhite, D Arney, C Jones, P Chai 63rd International Astronautical Congress, Naples, Italy, 2012 | 12 | 2012 |
| Integrated Trajectory, Habitat, and Logistics Analysis and Trade Study for Human Mars Missions A Owens, CA Jones, W Cirillo, J Klovstad, E Judd, P Chai, RG Merrill, ... ASCEND 2020, 4034, 2020 | 11 | 2020 |
| Reusable lunar transportation architecture utilizing orbital propellant depots J Gaebler, R Lugo, E Axdahl, P Chai, M Grimes, M Long, R Rowland, ... AIAA SPACE 2009 Conference & Exposition, 6711, 2009 | 11 | 2009 |
| In-space assembly capability assessment for potential human exploration and science applications SA Jefferies, DC Arney, CA Jones, F Stillwagen, P Chai, CD Hutchinson, ... AIAA SPACE and Astronautics Forum and Exposition, 5359, 2017 | 9 | 2017 |
| A Comparison of Propellant Requirements for Crewed Mars Missions Incorporating Different Waste Processing Technologies JA Olson, P Chai, D Rinderknecht, AJ Meier ASCEND 2021, 4080, 2021 | 8 | 2021 |
| Sensitivity analysis of hybrid propulsion transportation system for human mars expeditions P Chai, RG Merrill, M Qu, PD Kessler, RT Joyce AIAA SPACE and Astronautics Forum and Exposition, 5283, 2017 | 8 | 2017 |
| Exploration Systems Development Mission Directorate (ESDMD) Moon-to-Mars Architecture Definition Document KE Goodliff, NF Merancy, SS Bhakta, MA Rucker, PRP Chai, TE Ashurst, ... National Aeronautics and Space Administration, 2023 | 7 | 2023 |
| End to end optimization of a Mars hybrid transportation architecture M Qu, RG Merrill, P Chai 2019 AAS/AIAA Astrodynamics Specialist Conference, 2019 | 7 | 2019 |
| Integrated Optimization of Mars Hybrid Solar-Electric/Chemical Propulsion Trajectories P Chai, RG Merrill, M Qu, H Shen 2018 AIAA SPACE and Astronautics Forum and Exposition, 5346, 2018 | 7 | 2018 |
| Trajectory Designs for a Mars Hybrid Transportation Architecture M Qu, RG Merrill, P Chai, DR Komar 2015 AAS/AIAA Astrydynamics Specialist Conference, 2015 | 7 | 2015 |
| Optimizing parking orbits for roundtrip Mars missions M Qu, RG Merill, P Chai, DR Komar 2017 AAS/AIAA Astrodynamics Specialist Conference, 2017 | 6 | 2017 |
| End-to-end Trajectory for Conjunction Class Mars Missions Using Hybrid Solar-Electric/Chemical Transportation System PR Chai, RG Merrill, M Qu AAS/AIAA Space Flight Mechanics Meeting, 2016 | 6 | 2016 |
