Develops differentiable mesh deformation and geometry tools for large aircraft shape changes, with work on electric air taxis and blended-wing-body aircraft.
Education
- PhD, Mechanical and Aerospace Engineering
UC San Diego · 2022–present - MS, Mechanical Engineering
UC San Diego · 2022 - BS, Aerospace Engineering
UC San Diego · 2020
Research connections
Related to Marius L. Ruh
Methods
Papers
- Marius L. Ruh, John T. Hwang. Differentiable Signed Distance Function Surrogates for Multidisciplinary Design Optimization Using Radial Basis Functions. ASME IDETC/CIE 2026 · DETC2026-194018, 2026. Manuscript
- Marius L. Ruh, John T. Hwang. Surface Mesh Deformation for Large-Scale Multidisciplinary Design Optimization of Aircraft Concepts. AIAA AVIATION 2026 Forum, AIAA 2026-4569, 2026.PDF
@inproceedings{ruh2026surface, author = {Marius L. Ruh and John T. Hwang}, title = {Surface Mesh Deformation for Large-Scale Multidisciplinary Design Optimization of Aircraft Concepts}, booktitle = {AIAA AVIATION 2026 Forum, AIAA 2026-4569}, year = {2026}, note = {Metadata verification: Crossref unavailable: HTTPError} } - Marius L. Ruh, Michael A. P. Warner, Luca Scotzniovsky, Andrew H. Fletcher, Mark Z. Sperry, John T. Hwang. System-Level, Large-Scale Multidisciplinary Design Optimization of an Air Taxi Concept. Journal of Aircraft, 2026.DOIPDF
@article{ruh2026system, author = {Marius L. Ruh and Michael A. P. Warner and Luca Scotzniovsky and Andrew H. Fletcher and Mark Z. Sperry and John T. Hwang}, title = {System-Level, Large-Scale Multidisciplinary Design Optimization of an Air Taxi Concept}, journal = {Journal of Aircraft}, year = {2026}, pages = {1-24}, doi = {10.2514/1.c038533}, url = {https://doi.org/10.2514/1.c038533}, note = {Metadata verification: Crossref DOI} } - Marius L. Ruh, John T. Hwang. Differentiable Surface Mesh Deformation for Non-Conformal, Independently Parameterized Components with Large Shape Changes. AIAA AVIATION FORUM AND ASCEND 2025, 2025.DOIPDF
@inproceedings{ruh2025differentiable, author = {Marius L. Ruh and John T. Hwang}, title = {Differentiable Surface Mesh Deformation for Non-Conformal, Independently Parameterized Components with Large Shape Changes}, booktitle = {AIAA AVIATION FORUM AND ASCEND 2025}, year = {2025}, doi = {10.2514/6.2025-3683}, url = {https://doi.org/10.2514/6.2025-3683}, note = {Metadata verification: Crossref title} } - Marius L. Ruh, Michael Warner, John T. Hwang. Toward Large-Scale Multidisciplinary Design Optimization of Aircraft With CFD and Mixed-Fidelity System Models. AIAA SCITECH 2025 Forum, 2025.DOIPDF
@inproceedings{ruh2025toward, author = {Marius L. Ruh and Michael Warner and John T. Hwang}, title = {Toward Large-Scale Multidisciplinary Design Optimization of Aircraft With CFD and Mixed-Fidelity System Models}, booktitle = {AIAA SCITECH 2025 Forum}, year = {2025}, doi = {10.2514/6.2025-0371}, url = {https://doi.org/10.2514/6.2025-0371}, note = {Metadata verification: Crossref title} } - Sebastiaan P. van Schie, Marius L. Ruh, Andrew H. Fletcher, Michael Warner, Mark Sperry, Luca Scotzniovsky, Nicholas C. Orndorff, Ru Xiang, Jiayao Yan, Han Zhao, Joshua Krokowski, Jiun-Shyan Chen, Darshan Sarojini, Hyunjune Gill, Seongkyu Lee, Andrew C. Tagg, Ryan Anderson, Eric Green, Cibin Joseph, Andrew Ning, Zeyu Cheng, Zhi Cao, Chunting Mi, Alexandre T. Guibert, Ashley Cronk, Alicia A. Kim, Shirley Meng, Christopher Silva, John T. Hwang. Large-Scale Distributed Multidisciplinary Design Optimization of the NASA Lift-Plus-Cruise Air Taxi Concept. AIAA SCITECH 2025 Forum, 2025.DOIPDF
@inproceedings{vanschie2025large, author = {Sebastiaan P. van Schie and Marius L. Ruh and Andrew H. Fletcher and Michael Warner and Mark Sperry and Luca Scotzniovsky and Nicholas C. Orndorff and Ru Xiang and Jiayao Yan and Han Zhao and Joshua Krokowski and Jiun-Shyan Chen and Darshan Sarojini and Hyunjune Gill and Seongkyu Lee and Andrew C. Tagg and Ryan Anderson and Eric Green and Cibin Joseph and Andrew Ning and Zeyu Cheng and Zhi Cao and Chunting Mi and Alexandre T. Guibert and Ashley Cronk and Alicia A. Kim and Shirley Meng and Christopher Silva and John T. Hwang}, title = {Large-Scale Distributed Multidisciplinary Design Optimization of the NASA Lift-Plus-Cruise Air Taxi Concept}, booktitle = {AIAA SCITECH 2025 Forum}, year = {2025}, doi = {10.2514/6.2025-0362}, url = {https://doi.org/10.2514/6.2025-0362}, note = {Metadata verification: Crossref title} } - Bingran Wang, Marius L. Ruh, Aoran Tian, Luca Scotzniovsky, John T. Hwang. Large-scale MDO under uncertainty of an eVTOL aircraft using dimension reduction via global sensitivity analysis. AIAA AVIATION FORUM AND ASCEND 2025, 2025.DOIPDF
@inproceedings{wang2025large, author = {Bingran Wang and Marius L. Ruh and Aoran Tian and Luca Scotzniovsky and John T. Hwang}, title = {Large-scale MDO under uncertainty of an eVTOL aircraft using dimension reduction via global sensitivity analysis}, booktitle = {AIAA AVIATION FORUM AND ASCEND 2025}, year = {2025}, doi = {10.2514/6.2025-3344}, url = {https://doi.org/10.2514/6.2025-3344}, note = {Metadata verification: Crossref title} } - Marius L. Ruh, Andrew Fletcher, Darshan Sarojini, Mark Sperry, Jiayao Yan, Luca Scotzniovsky, Sebastiaan P. van Schie, Michael Warner, Nicholas C. Orndorff, Ru Xiang, Anugrah J. Joshy, Han Zhao, Joshua Krokowski, Hyunjune Gill, Seongkyu Lee, Zeyu Cheng, Zhi Cao, Chris Mi, Christopher Silva, Lauren Wolfe, Jiun-Shyan Chen, John T. Hwang. Large-scale multidisciplinary design optimization of a NASA air taxi concept using a comprehensive physics-based system model. AIAA SCITECH 2024 Forum, 2024.DOIPDF
@inproceedings{ruh2024large, author = {Marius L. Ruh and Andrew Fletcher and Darshan Sarojini and Mark Sperry and Jiayao Yan and Luca Scotzniovsky and Sebastiaan P. van Schie and Michael Warner and Nicholas C. Orndorff and Ru Xiang and Anugrah J. Joshy and Han Zhao and Joshua Krokowski and Hyunjune Gill and Seongkyu Lee and Zeyu Cheng and Zhi Cao and Chris Mi and Christopher Silva and Lauren Wolfe and Jiun-Shyan Chen and John T. Hwang}, title = {Large-scale multidisciplinary design optimization of a NASA air taxi concept using a comprehensive physics-based system model}, booktitle = {AIAA SCITECH 2024 Forum}, year = {2024}, doi = {10.2514/6.2024-0771}, url = {https://doi.org/10.2514/6.2024-0771}, note = {Metadata verification: Crossref DOI} } - Darshan Sarojini, Marius Ruh, Jiayao Yan, Luca Scotzniovsky, Nicholas C. Orndorff, Ru Xiang, Han Zhao, Joshua Krokowski, Michael Warner, Sebastiaan van Schie, Ashley Cronk, Alexandre T. Guibert, Jeffrey T. Chambers, Lauren Wolfe, Rachel Doring, Robin Despins, Cibin Joseph, Ryan Anderson, Andrew Ning, Hyunjune Gill, Seongkyu Lee, Zeyu Cheng, Zhi Cao, Chris Mi, Ying Shirley Meng, Christopher Silva, Jiun-Shyan Chen, Alicia A. Kim, John T. Hwang. Review of Computational Models for Large-Scale MDAO of Urban Air Mobility Concepts. AIAA SCITECH 2024 Forum, 2024.DOIPDF
@inproceedings{sarojini2024review, author = {Darshan Sarojini and Marius Ruh and Jiayao Yan and Luca Scotzniovsky and Nicholas C. Orndorff and Ru Xiang and Han Zhao and Joshua Krokowski and Michael Warner and Sebastiaan van Schie and Ashley Cronk and Alexandre T. Guibert and Jeffrey T. Chambers and Lauren Wolfe and Rachel Doring and Robin Despins and Cibin Joseph and Ryan Anderson and Andrew Ning and Hyunjune Gill and Seongkyu Lee and Zeyu Cheng and Zhi Cao and Chris Mi and Ying Shirley Meng and Christopher Silva and Jiun-Shyan Chen and Alicia A. Kim and John T. Hwang}, title = {Review of Computational Models for Large-Scale MDAO of Urban Air Mobility Concepts}, booktitle = {AIAA SCITECH 2024 Forum}, year = {2024}, doi = {10.2514/6.2024-0377}, url = {https://doi.org/10.2514/6.2024-0377}, note = {Metadata verification: Crossref DOI} } - Hyunjune Gill, Seongkyu Lee, Marius L. Ruh, John T. Hwang. Applicability of Low-Fidelity Tonal and Broadband Noise Models on Small-Scale Rotors. AIAA SciTech 2023 Forum, 2023.PDF
@inproceedings{gill2023applicability, author = {Hyunjune Gill and Seongkyu Lee and Marius L. Ruh and John T. Hwang}, title = {Applicability of Low-Fidelity Tonal and Broadband Noise Models on Small-Scale Rotors}, booktitle = {AIAA SciTech 2023 Forum}, year = {2023}, note = {Metadata verification: Crossref unavailable: HTTPError} } - Thomas Nascenzi, Timothy Cuatt, Tyler F. Winter, Marius L. Ruh, Darshan Sarojini, John T. Hwang, Sarina Kiani. Physics-based Surrogate Models for Urban Air Mobility Vehicle Weight Prediction. AIAA SCITECH 2023 Forum, 2023.DOIPDF
@inproceedings{nascenzi2023physics, author = {Thomas Nascenzi and Timothy Cuatt and Tyler F. Winter and Marius L. Ruh and Darshan Sarojini and John T. Hwang and Sarina Kiani}, title = {Physics-based Surrogate Models for Urban Air Mobility Vehicle Weight Prediction}, booktitle = {AIAA SCITECH 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-1360}, url = {https://doi.org/10.2514/6.2023-1360}, note = {Metadata verification: Crossref title} } - Nicholas C. Orndorff, Bingran Wang, Marius L. Ruh, Andrew H. Fletcher, John T. Hwang. Gradient-Based Sizing Optimization of Power-Beaming-Enabled Aircraft. AIAA AVIATION 2023 Forum, p. 4019, 2023.DOIPDF
@inproceedings{orndorff2023gradient, author = {Nicholas C. Orndorff and Bingran Wang and Marius L. Ruh and Andrew H. Fletcher and John T. Hwang}, title = {Gradient-Based Sizing Optimization of Power-Beaming-Enabled Aircraft}, booktitle = {AIAA AVIATION 2023 Forum}, pages = {4019}, year = {2023}, doi = {10.2514/6.2023-4019}, url = {https://doi.org/10.2514/6.2023-4019} } - Marius L. Ruh, Xiangbei Liu, Rose Yu, John T. Hwang. Airfoil shape parameterization using reconstruction-error-minimizing generative adversarial networks. AIAA AVIATION 2023 Forum, 2023.DOIPDF
@inproceedings{ruh2023airfoil, author = {Marius L. Ruh and Xiangbei Liu and Rose Yu and John T. Hwang}, title = {Airfoil shape parameterization using reconstruction-error-minimizing generative adversarial networks}, booktitle = {AIAA AVIATION 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-3722}, url = {https://doi.org/10.2514/6.2023-3722}, note = {Metadata verification: Crossref title} } - Marius L. Ruh, John T. Hwang. Fast and Robust Computation of Optimal Rotor Designs Using Blade Element Momentum Theory. AIAA Journal, 2023.DOIPDF
@article{ruh2023fast, author = {Marius L. Ruh and John T. Hwang}, title = {Fast and Robust Computation of Optimal Rotor Designs Using Blade Element Momentum Theory}, journal = {AIAA Journal}, year = {2023}, volume = {61}, number = {9}, pages = {4096-4111}, doi = {10.2514/1.j062611}, url = {https://doi.org/10.2514/1.j062611}, note = {Metadata verification: Crossref DOI} } - Marius L. Ruh, Darshan Sarojini, Andrew H. Fletcher, Isaac Asher, John T. Hwang. Large-Scale Multidisciplinary Design Optimization of the NASA Lift-Plus-Cruise Concept Using a Novel Aircraft Design Framework. VFS Autonomous VTOL Technical Meeting, Mesa AZ, Jan 24–26 2023; preprint arXiv:2304.14889, 2023.PDF
@inproceedings{ruh2023large, author = {Marius L. Ruh and Darshan Sarojini and Andrew H. Fletcher and Isaac Asher and John T. Hwang}, title = {Large-Scale Multidisciplinary Design Optimization of the NASA Lift-Plus-Cruise Concept Using a Novel Aircraft Design Framework}, booktitle = {VFS Autonomous VTOL Technical Meeting, Mesa AZ, Jan 24–26 2023; preprint arXiv:2304.14889}, year = {2023}, eprint = {2304.14889}, archiveprefix = {arXiv}, note = {Metadata verification: no high-confidence Crossref title match; numeric collision guard applied} } - Shaadi Sabeti, Thomas Nascenzi, Timothy Cuatt, Tyler F. Winter, Marius L. Ruh, Darshan Sarojini, John T. Hwang. Generating Structural Weight Estimation Equations for a Category of UAM Aircraft. AIAA AVIATION 2023 Forum, 2023.DOIPDF
@inproceedings{sabeti2023generating, author = {Shaadi Sabeti and Thomas Nascenzi and Timothy Cuatt and Tyler F. Winter and Marius L. Ruh and Darshan Sarojini and John T. Hwang}, title = {Generating Structural Weight Estimation Equations for a Category of UAM Aircraft}, booktitle = {AIAA AVIATION 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-4280}, url = {https://doi.org/10.2514/6.2023-4280}, note = {Metadata verification: Crossref title} } - Darshan Sarojini, Marius L. Ruh, Mark Sperry, Jiayao Yan, Andrew Fletcher, Anugrah Jo Joshy, Luca Scotzniovsky, Alexander Ivanov, Nicholas Orndorff, Victor Gandarillas, Isaac Asher, Jeff Chambers, Hyunjune Gill, Seongkyu Lee, Zeyu Cheng, Gabriel Rodriguez, Shuofeng Zhao, Chunting Mi, Thomas Nascenzi, Timothy Cuatt, Tyler Winter, Alexandre Guibert, Ashley Cronk, Alicia Kim, Shirley Meng, John T. Hwang. Large-Scale Multidisciplinary Design Optimization of an eVTOL Aircraft Using Comprehensive Analysis. AIAA SciTech 2023 Forum, 2023.PDF
@inproceedings{sarojini2023large, author = {Darshan Sarojini and Marius L. Ruh and Mark Sperry and Jiayao Yan and Andrew Fletcher and Anugrah Jo Joshy and Luca Scotzniovsky and Alexander Ivanov and Nicholas Orndorff and Victor Gandarillas and Isaac Asher and Jeff Chambers and Hyunjune Gill and Seongkyu Lee and Zeyu Cheng and Gabriel Rodriguez and Shuofeng Zhao and Chunting Mi and Thomas Nascenzi and Timothy Cuatt and Tyler Winter and Alexandre Guibert and Ashley Cronk and Alicia Kim and Shirley Meng and John T. Hwang}, title = {Large-Scale Multidisciplinary Design Optimization of an eVTOL Aircraft Using Comprehensive Analysis}, booktitle = {AIAA SciTech 2023 Forum}, year = {2023}, note = {Metadata verification: Crossref unavailable: HTTPError; numeric collision guard applied} } - Marius L. Ruh, John T. Hwang. Robust modeling and optimal design of rotors using blade element momentum theory. AIAA AVIATION 2021 FORUM, 2021.DOIPDF
@inproceedings{ruh2021robust, author = {Marius L. Ruh and John T. Hwang}, title = {Robust modeling and optimal design of rotors using blade element momentum theory}, booktitle = {AIAA AVIATION 2021 FORUM}, year = {2021}, doi = {10.2514/6.2021-2598}, url = {https://doi.org/10.2514/6.2021-2598}, note = {Metadata verification: Crossref title} }