Papers, methods, and research outputs.

@article{pointing-2022,
  title = {Method for Pointing Spacecraft While Minimizing Change in Orientation},
  author = {Patrick McKeen and Kerri Cahoy},
  year = {2022},
  journal = {Journal of Guidance, Control, and Dynamics},
  volume = {45},
  number = {8},
  pages = {1554--1557},
  doi = {10.2514/1.G006429}
}

@article{hip-torque-2021,
  title = {Analysis of the relationship between hip joint flexion/extension and torques in the mark III space suit using a computational dynamics model},
  author = {Patrick McKeen and Conor Cullinane and Richard Rhodes and Leia Stirling},
  year = {2021},
  journal = {Computer Methods in Biomechanics and Biomedical Engineering},
  volume = {24},
  number = {8},
  pages = {831--843},
  doi = {10.1080/10255842.2020.1853708}
}

@inproceedings{mission-planning-2026,
  title = {Autonomous Mission Planning with an Onboard Vision-Language Model: What a Small Model Can and Cannot Do for a CubeSat, Measured},
  author = {Patrick McKeen and Zac Manchester},
  year = {2026},
  booktitle = {Joint i-SAIRAS \& iSpaRo Conference},
  address = {Cologne, Germany},
  note = {Accepted}
}

@inproceedings{mjorbit-2026,
  title = {mjorbit: A Simulation Framework for Space Robotics},
  author = {John Z. Zhang and Joris Verhagen and Fausto Vega and Patrick McKeen and Zachary Manchester},
  year = {2026},
  booktitle = {International Conference on Space Robotics (iSpaRo)},
  url = {https://arxiv.org/abs/2609.08010},
  note = {Accepted · preprint available}
}

@inproceedings{formation-2026,
  title = {Decentralized Formation Control with Differential Drag for Close-Proximity Satellite Clusters},
  author = {Patrick McKeen and Zachary Manchester},
  year = {2026},
  booktitle = {77th International Astronautical Congress},
  number = {IAC-26-C1.3.2},
  note = {Presented October 2026}
}

@inproceedings{one-wheel-2026,
  title = {One Wheel Is Enough: Control Strategies for the 3+1 Actuator Architecture Across Small Satellite Mission Profiles},
  author = {Niclas Scheuer and Patrick McKeen and Kerri Cahoy},
  year = {2026},
  booktitle = {77th International Astronautical Congress},
  number = {IAC-26,B4,6A,2,x109468},
  note = {Presented October 2026}
}

@inproceedings{planner-2026,
  title = {A Feasibility-Aware Attitude Trajectory Planner for Small Satellites},
  author = {Patrick McKeen and Niclas Scheuer and Kerri Cahoy},
  year = {2026},
  booktitle = {40th Annual Small Satellite Conference},
  number = {SSC26-FT-34},
  doi = {10.26077/0cet-hr57},
  url = {https://digitalcommons.usu.edu/smallsat/2026/all2026/227/}
}

@inproceedings{generalized-acs-2026,
  title = {Generalized Attitude Control for Small Spacecraft},
  author = {Patrick McKeen and Niclas Scheuer and Kerri Cahoy},
  year = {2026},
  booktitle = {40th Annual Small Satellite Conference},
  number = {SSC26-P2-54},
  doi = {10.26077/6a3x-dk30},
  url = {https://digitalcommons.usu.edu/smallsat/2026/all2026/253/}
}

@inproceedings{genadcs-2026,
  title = {A Modular Open-Source Python Framework for Small Satellite Attitude Determination and Control},
  author = {Patrick McKeen and Niclas Scheuer and Kerri Cahoy},
  year = {2026},
  booktitle = {SmallSat Europe 2026 · Amsterdam},
  url = {https://smallsateurope.com/paper/a-modular-open-source-adcs-framework-for-small-satellite-development-and-testing/}
}

@inproceedings{estimation-2024,
  title = {Generalized Attitude Estimation for Spacecraft},
  author = {Patrick McKeen and Kerri Cahoy},
  year = {2024},
  booktitle = {38th Annual Small Satellite Conference},
  doi = {10.26077/vgd0-7e57},
  url = {https://digitalcommons.usu.edu/smallsat/2024/all2024/37/}
}

@inproceedings{trajectory-2022,
  title = {Trajectory-Planning Attitude Control System for Satellites with Magnetic Attitude Control and One Reaction Wheel},
  author = {Patrick McKeen and Alex Meredith and Kerri Cahoy},
  year = {2022},
  booktitle = {AAS/AIAA Astrodynamics Specialist Conference},
  number = {AAS 22-810},
  url = {https://alexrose.space/publications/}
}

@inproceedings{beavercube-2020,
  title = {BeaverCube: Coastal Imaging with VIS/LWIR CubeSats},
  author = {Paula do Vale Pereira and Madeline Garcia and Madeleine Schroeder and Humberto Caldelas and Charles Lindsay and Alex Choi and Kaila Pfrang and Amelia Gagnon and Alex Meredith and Patrick McKeen and Jim Clark and Thomas J. Murphy and Sheila Baber and Sabrina Khan and Alex Miller and Gustavo Velez and Matthew Campbell and Jacob Coray and Jim Koldada and Tina Tran and Sam Austin and Alison Louthain and Tesla Wells and Mohammad Kabir and Ethan Sit and Christian Haughwout and Kerri Cahoy},
  year = {2020},
  booktitle = {34th Annual Small Satellite Conference},
  number = {SSC20-V-03},
  url = {https://digitalcommons.usu.edu/smallsat/2020/all2020/126/}
}

@inproceedings{hip-tradespace-2020,
  title = {Tradespace Exploration of Geometry for a Spacesuit Hip Bearing Assembly},
  author = {Patrick McKeen and Leia Stirling},
  year = {2020},
  booktitle = {IEEE Aerospace Conference},
  doi = {10.1109/AERO47225.2020.9172433}
}

@inproceedings{communications-2019,
  title = {Tradespace Exploration of the Next Generation Communication Satellites},
  author = {Alexa Aguilar and Patrick Butler and Jennifer Collins and Markus Guerster and Bjarni Kristinsson and Patrick McKeen and Kerri Cahoy and Edward F. Crawley},
  year = {2019},
  booktitle = {AIAA SciTech Forum},
  doi = {10.2514/6.2019-0768},
  url = {https://dspace.mit.edu/entities/publication/d972acb7-ffcc-4a96-ae67-79dd6480474c}
}

@misc{postural-2018,
  title = {Analysis of Human Postural Control in the Demonstrator Spacesuit},
  author = {Patrick McKeen and Leia Stirling},
  year = {2018},
  howpublished = {International Conference on Environmental Systems},
  note = {Poster presentation}
}

@phdthesis{phd-2025,
  title = {Computational Methods to Improve Satellite Attitude Determination and Control with a Focus on Autonomy, Generalizability, and Underactuation},
  author = {Patrick McKeen},
  year = {2025},
  school = {Massachusetts Institute of Technology},
  url = {https://dspace.mit.edu/handle/1721.1/158874}
}

@mastersthesis{sm-2019,
  title = {Modeling and Tradespace Exploration of a Space Suit Hip Bearing Assembly using Multi-Degree-of-Freedom Range of Motion Analysis},
  author = {Patrick McKeen},
  year = {2019},
  school = {Massachusetts Institute of Technology},
  url = {https://dspace.mit.edu/entities/publication/0a2ce517-4978-4b0f-b960-eefcad6380c2}
}