Publications

Submitted Journal Articles

• T. Sarton du Jonchay, Y. Shimane, M. Isaji, H. Chen, and K. Ho, “On-Orbit Servicing Logistics Framework Generalized to the Multi-Orbit Case,” Journal of Spacecraft and Rockets (Under Review).

Peer-Reviewed Journal Publications

1. Y. Takubo, H. Chen, and K. Ho, “Hierarchical Reinforcement Learning Framework for Stochastic Spaceflight Campaign Design,” Journal of Spacecraft and Rockets, Vol. 59, No. 2, pp. 421-433, 2022.

2. H. Chen, M. Ornik, and K. Ho, “Space Exploration Architecture and Design Framework for Commercialization,” Journal of Spacecraft and Rockets, Vol. 59, No. 2, pp. 538-551, 2022.

3. T. Sarton du Jonchay, H. Chen, M. Isaji, Y. Shimane, and K. Ho, “On-Orbit Servicing Optimization Framework with High- and Low-Thrust Propulsion Tradeoff,” Journal of Spacecraft and Rockets, Vol. 59, No.1, pp. 33-48, 2022.

4. H. Chen, B. Gardner, P. Grogan, and K. Ho, “Flexibility Management for Space Logistics via Decision Rules,” Journal of Spacecraft and Rockets, Vol. 58, No. 5, pp. 1314-1324, 2021.

5. T. Sarton du Jonchay, H. Chen, O. Gunasekara, and K. Ho, “Framework for Modeling and Optimization of On-Orbit Servicing Operations Under Demand Uncertainties,” Journal of Spacecraft and Rockets, Vol. 58, No. 4, pp. 1157-1173, 2021.

6. H. Chen, T. Sarton du Jonchay, L. Hou, and K. Ho, “Multi-Fidelity Space Mission Planning and Infrastructure Design Framework for Space Resource Logistics,” Journal of Spacecraft and Rockets, Vol. 58, No. 2, pp. 538-551, 2021.

7. T. Sarton du Jonchay, H. Chen, Anna Wieger, Zoe Szajnfarber, and K. Ho, “Space Architecture Design for Commercial Suitability: A Case Study in In-Situ Resource Utilization Systems,” Acta Astronautica, Vol. 175, pp. 45-50, 2020.

8. H. Chen, T. Sarton du Jonchay, L. Hou, and K. Ho, “Integrated In-Situ Resource Utilization System Design and Logistics for Mars Exploration,” Acta Astronautica, Vol. 170, pp. 80-92, 2020.

9. H. Chen, H. Lee, and K. Ho, “Space Transportation System and Mission Planning for Regular Interplanetary Missions,” Journal of Spacecraft and Rockets, Vol. 56, No. 1, pp. 12-20 , 2019.

10. Z. Chen, H. Chen, and K. Ho, “Analytical Optimization Methods for Space Logistics,” Journal of Spacecraft and Rockets, Vol. 55, No. 6, pp. 1582-1586, 2018.

11. H. Chen and K. Ho, “Integrated Space Logistics Mission Planning and Spacecraft Design with Mixed-Integer Nonlinear Programming,” Journal of Spacecraft and Rockets, Vol. 55, No. 2, pp. 365-381, 2018.

Conference Proceedings (selected)

1. H. Chen, and H. Lee, “Distributed Space Resource Logistics System Optimization under Economies of Scale,” ASCEND 2021, Las Vegas, NV & Virtual, no. AIAA 2021-4079, Nov. 2021.

2. T. Sarton du Jonchay, Y. Shimane, M. Isaji, H. Chen, and K. Ho, “On-Orbit Servicing Logistics Framework Generalized to the Multi-Orbit Case,” AAS/AIAA Astrodynamics Specialist Conference, Online, Aug. 2021.

3. H. Chen, B. Gardner, P. Grogan, and K. Ho, “Flexibility Management for Space Logistics Through Decision Rules,” ASCEND 2020, AIAA-2020-4187, Online, Nov. 2020.

4. Y. Takubo, H. Chen, and K. Ho, “Performance Analysis of Hierarchical Reinforcement Learning Framework for Stochastic Space Logistics,” ASCEND 2020, AIAA-2020-4230, Online, Nov. 2020.

5. T. Sarton du Jonchay, H. Chen, O. Gunasekara, and K. Ho, “Rolling Horizon Optimization Framework for the Scheduling of On-Orbit Servicing Operations under Servicing Demand Uncertainties,” ASCEND 2020, AIAA-2020-4131, Online, Nov. 2020.

6. K. Ikeya, H. Sakamoto, H. Chen, and K. Ho, “Integrated Orbit Design and Network-Based Optimization of Interplanetary Mission Architectures,” AIAA SciTech Forum 2020, AIAA 2020-0072, Orlando, FL, Jan. 2020.

7. H. Chen, M. Ornik, and K. Ho, “Incentive Design for Commercial Participation in Space Logistics Infrastructure Development and Deployment,” 70TH International Astronautical Congress, Washington D.C., United States, IAC-19,D3,1,6,x51353, Oct. 2019. [Luigi G. Napolitano Award]

8. H. Chen, T. Sarton du Jonchay, L. Hou, and K. Ho, “Space Resource Logistics for Human Exploration to Mars,” 70TH International Astronautical Congress, Washington D.C., United States, IAC-19,A5,2,4,x49279, Oct. 2019.

9. T. Sarton du Jonchay, H. Chen, A. Wieger, Z. Szajnfarber, and K. Ho, “Space System Architecting for Commercial Suitability: A Case Study in Cislunar Space Transportation,” 70TH International Astronautical Congress, Washington D.C., United States, IAC-19,D3,4,4,x49785, Oct. 2019.

10. A. Wieger, H. Chen, T. Sarton du Jonchay, K. Ho, and Z. Szajnfarber, “An Approach to Endogenously Incentivizing Commercial Participation through System Architecture Choices,” 70TH International Astronautical Congress, Washington D.C., United States, IAC-19,D3,1,4,x52667, Oct. 2019.

11. H. Chen, T. Sarton du Jonchay, L. Hou, and K. Ho, “Multi-Fidelity Space Mission Planning and Space Infrastructure Design Framework for Space Resource Logistics,” AIAA Propulsion & Energy Forum 2019, Indianapolis, IN, no. AIAA 2019-4134, Sep. 2019.

12. H. Chen and K. Ho, “Hierarchical Reinforcement Learning Framework for Space Exploration Campaign Design,” AIAA Propulsion & Energy Forum 2019, Indianapolis, IN, no. AIAA 2019-4135, Sep. 2019.

13. H. Chen, A. Lapin, T. Ukai, C. Lei, and K. Ho, ““Optimization for Large-Scale Multi-Mission Space Campaign Design by Approximate Dynamic Programming,” AIAA SPACE 2018 Conference and Exposition, Orlando, FL, no. AIAA 2018-5287, Sep. 2018.

14. H. Chen, and K. Ho, “Multi-Actor Analysis Framework for Space Architecture Commercialization,” AIAA SPACE 2018 Conference and Exposition, Orlando, FL, no. AIAA 2018-5410, Sep. 2018.

15. H. Chen, K. Ho, B. Gardner, and P. Grogan, “Built-in Flexibility for Space Logistics Mission Planning and Spacecraft Design,” AIAA SPACE 2017 Conference and Exposition, Orlando, FL, no. AIAA 2017-5348, Sep. 2017.

16. H. Chen, H. Lee, and K. Ho, “Space Transportation System and Infrastructure Design for Regular Interplanetary Cargo Missions,” AIAA SPACE 2017 Conference and Exposition, Orlando, FL, no. AIAA 2017-5197, Sep. 2017.

17. Z. Chen, H. Chen, and K. Ho, “Analytical model of Space Infrastructure Staged Deployment Strategy in Space Logistics,” AIAA SPACE 2017 Conference and Exposition, Orlando, FL, no. AIAA 2017-5349, Sep. 2017.

18. K. Ho, H. Chen, and H. M. Kim, “Value of Bootstrapping Staged Deployment of Infrastructure: Case Study in Space Infrastructure Deployment,” ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Cleveland, OH, no. DETC2017-67610, Aug. 2017.

19. H. Chen, and K. Ho, “Integrated Space Mission Planning and In-Orbit Infrastructure Design with Mixed-Integer Programming,” AIAA SPACE 2016 Conference and Exposition, Long Beach, CA, no. AIAA 2016-5309, Sep. 2016.

Invited Technical Talks

• H. Chen, and K. Ho, “Time-expanded Network for Long-Term Human Space Mission Planning,” INFORMS Annual Meeting, National Harbor, MD, Nov. 2020.

Other Presentations

• H. Chen, T. Sarton du Jonchay, L. Hou, and K. Ho, “Integrated Analysis Framework for Space Propellant Logistics: Production, Storage, and Transportation,” Lunar ISRU Workshop, Columbia, MD, Jul. 2019.

• K. Ho and H. Chen, “Space Transportation Network Analysis for CisLunar Space Economy with Lunar Resources,” Annual Meeting of the Lunar Exploration Analysis Group, Columbia, MD, Oct. 2017.

• T. Ukai, H. Chen, and K. Ho, “Optimization for Campaign-level Human Space Mission Design,” INFORMS Annual Meeting, Houston, TX, Oct. 2017.