Funded projects
Large-scale MDAO of urban air mobility vehicle concepts
NASA · University Leadership Initiative
Full title: Rapid development of urban air mobility vehicle concepts through full-configuration multidisciplinary design, analysis, and optimization
Collaborating institutions: UC San Diego, San Diego State University, UC Davis, Brigham Young University, Aurora Flight Sciences, M4 Engineering
Relevant papers
- 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} } - Sebastiaan P. van Schie, John T. Hwang. Computational Framework for High-Fidelity Aerodynamic Shape Optimization Using Weighted POD. AIAA AVIATION 2026 Forum, 2026.DOIPDF
@inproceedings{vanschie2026computational, author = {Sebastiaan P. van Schie and John T. Hwang}, title = {Computational Framework for High-Fidelity Aerodynamic Shape Optimization Using Weighted POD}, booktitle = {AIAA AVIATION 2026 Forum}, year = {2026}, doi = {10.2514/6.2026-4782}, url = {https://doi.org/10.2514/6.2026-4782}, note = {Metadata verification: Crossref title} } - Sebastiaan P. van Schie, John T. Hwang. Towards Hyper-Reduced Weighted POD for Large-Scale Aerodynamic Design Optimization. AIAA SCITECH 2026 Forum, 2026.DOIPDF
@inproceedings{vanschie2026towards, author = {Sebastiaan P. van Schie and John T. Hwang}, title = {Towards Hyper-Reduced Weighted POD for Large-Scale Aerodynamic Design Optimization}, booktitle = {AIAA SCITECH 2026 Forum}, year = {2026}, doi = {10.2514/6.2026-1212}, url = {https://doi.org/10.2514/6.2026-1212}, note = {Metadata verification: Crossref DOI} } - Zeyu Cheng, Zhi Cao, Chris Mi, John T. Hwang. Cost Optimization of Electric Vertical Takeoff and Landing Aircraft Through Powertrain Modeling. Journal of Air Transportation, 2025.DOIPDF
@article{cheng2025cost, author = {Zeyu Cheng and Zhi Cao and Chris Mi and John T. Hwang}, title = {Cost Optimization of Electric Vertical Takeoff and Landing Aircraft Through Powertrain Modeling}, journal = {Journal of Air Transportation}, year = {2025}, volume = {33}, number = {3}, pages = {285-296}, doi = {10.2514/1.d0487}, url = {https://doi.org/10.2514/1.d0487}, note = {Metadata verification: Crossref DOI} } - Zeyu Cheng, Zhi Cao, John T. Hwang, Chris Mi. Weight minimization of electric vertical takeoff and landing aircraft: From the comprehensive powertrain perspective. International Journal of Electrical Power & Energy Systems, 2025.DOIPDF
@article{cheng2025weight, author = {Zeyu Cheng and Zhi Cao and John T. Hwang and Chris Mi}, title = {Weight minimization of electric vertical takeoff and landing aircraft: From the comprehensive powertrain perspective}, journal = {International Journal of Electrical Power & Energy Systems}, year = {2025}, volume = {172}, pages = {111328}, doi = {10.1016/j.ijepes.2025.111328}, url = {https://doi.org/10.1016/j.ijepes.2025.111328}, note = {Metadata verification: Crossref DOI} } - Joshua Krokowski, John T. Hwang. Penalty-Based Coupling of Non-Matching Beam Cross-Section Meshes for Large-Scale Design Optimization. AIAA AVIATION FORUM AND ASCEND 2025, 2025.DOIPDF
@inproceedings{krokowski2025penalty, author = {Joshua Krokowski and John T. Hwang}, title = {Penalty-Based Coupling of Non-Matching Beam Cross-Section Meshes for Large-Scale Design Optimization}, booktitle = {AIAA AVIATION FORUM AND ASCEND 2025}, year = {2025}, doi = {10.2514/6.2025-3473}, url = {https://doi.org/10.2514/6.2025-3473}, note = {Metadata verification: Crossref title} } - 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} } - Luca Scotzniovsky, Ru Xiang, Zeyu Cheng, Gabriel Rodriguez, David Kamensky, Chris Mi, John T. Hwang. Geometric design of electric motors using adjoint-based shape optimization. Optimization and Engineering, 2025.DOIPDF
@article{scotzniovsky2025geometric, author = {Luca Scotzniovsky and Ru Xiang and Zeyu Cheng and Gabriel Rodriguez and David Kamensky and Chris Mi and John T. Hwang}, title = {Geometric design of electric motors using adjoint-based shape optimization}, journal = {Optimization and Engineering}, year = {2025}, volume = {26}, number = {1}, pages = {121-158}, doi = {10.1007/s11081-024-09892-6}, url = {https://doi.org/10.1007/s11081-024-09892-6}, note = {Metadata verification: Crossref DOI} } - Mark Z. Sperry, John T. Hwang. Ozone: an open-source ordinary differential equation solver for gradient-based optimization. Optimization and Engineering, 2025.DOIPDF
@article{sperry2025ozone, author = {Mark Z. Sperry and John T. Hwang}, title = {Ozone: an open-source ordinary differential equation solver for gradient-based optimization}, journal = {Optimization and Engineering}, year = {2025}, volume = {26}, number = {3}, pages = {2145-2183}, doi = {10.1007/s11081-025-09967-y}, url = {https://doi.org/10.1007/s11081-025-09967-y}, 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, Nicholas C. Orndorff, Mark Sperry, John T. Hwang. Extension of graph-accelerated non-intrusive polynomial chaos to high-dimensional uncertainty quantification through the active subspace method. Aerospace Science and Technology, 2025.DOIPDF
@article{wang2025extension, author = {Bingran Wang and Nicholas C. Orndorff and Mark Sperry and John T. Hwang}, title = {Extension of graph-accelerated non-intrusive polynomial chaos to high-dimensional uncertainty quantification through the active subspace method}, journal = {Aerospace Science and Technology}, year = {2025}, volume = {160}, pages = {110074}, doi = {10.1016/j.ast.2025.110074}, url = {https://doi.org/10.1016/j.ast.2025.110074}, note = {Metadata verification: Crossref DOI} } - Han Zhao, John T. Hwang, Jiun-Shyan Chen. Open-source shape optimization for isogeometric shells using FEniCS and OpenMDAO. Engineering with Computers, 2025.DOIPDF
@article{zhao2025open, author = {Han Zhao and John T. Hwang and Jiun-Shyan Chen}, title = {Open-source shape optimization for isogeometric shells using FEniCS and OpenMDAO}, journal = {Engineering with Computers}, year = {2025}, volume = {41}, number = {3}, pages = {1877-1899}, doi = {10.1007/s00366-025-02116-0}, url = {https://doi.org/10.1007/s00366-025-02116-0}, note = {Metadata verification: Crossref DOI; A.I.37 is online-first PDF artifact, A.I.40 is canonical final artifact} } - 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} } - Mark Sperry, Kavish Kondap, John T. Hwang. Static Task Scheduling for Parallel Execution of Large-Scale Multidisciplinary Design Optimization Models. AIAA SCITECH 2024 Forum, 2024.DOIPDF
@inproceedings{sperry2024static, author = {Mark Sperry and Kavish Kondap and John T. Hwang}, title = {Static Task Scheduling for Parallel Execution of Large-Scale Multidisciplinary Design Optimization Models}, booktitle = {AIAA SCITECH 2024 Forum}, year = {2024}, doi = {10.2514/6.2024-1803}, url = {https://doi.org/10.2514/6.2024-1803}, note = {Metadata verification: Crossref DOI} } - Sebastiaan P. van Schie, Michael Warner, Andrew Fletcher, John T. Hwang. Enforcing Work Conservation in Modular Aeroelastic Coupling For Multidisciplinary Design Optimization. AIAA SCITECH 2024 Forum, 2024.DOIPDF
@inproceedings{vanschie2024enforcing, author = {Sebastiaan P. van Schie and Michael Warner and Andrew Fletcher and John T. Hwang}, title = {Enforcing Work Conservation in Modular Aeroelastic Coupling For Multidisciplinary Design Optimization}, booktitle = {AIAA SCITECH 2024 Forum}, year = {2024}, doi = {10.2514/6.2024-2411}, url = {https://doi.org/10.2514/6.2024-2411}, note = {Metadata verification: Crossref DOI} } - Bingran Wang, Mark Sperry, Victor E. Gandarillas, John T. Hwang. Accelerating Model Evaluations in Uncertainty Propagation on Tensor Grids Using Computational Graph Transformations. Aerospace Science and Technology 145 (2024), p. 108843, 2024.PDF
@article{wang2023accelerating, author = {Bingran Wang and Mark Sperry and Victor E. Gandarillas and John T. Hwang}, title = {Accelerating Model Evaluations in Uncertainty Propagation on Tensor Grids Using Computational Graph Transformations}, journal = {Aerospace Science and Technology 145 (2024), p. 108843}, year = {2023}, note = {Metadata verification: Crossref unavailable: HTTPError} } - Michael Warner, Andrew Fletcher, Sebastiaan P. van Schie, John T. Hwang. A Method for Modular MDO Model Assembly via a Solver Independent Field Representation. AIAA SCITECH 2024 Forum, 2024.DOIPDF
@inproceedings{warner2024method, author = {Michael Warner and Andrew Fletcher and Sebastiaan P. van Schie and John T. Hwang}, title = {A Method for Modular MDO Model Assembly via a Solver Independent Field Representation}, booktitle = {AIAA SCITECH 2024 Forum}, year = {2024}, doi = {10.2514/6.2024-1802}, url = {https://doi.org/10.2514/6.2024-1802}, note = {Metadata verification: Crossref DOI} } - Ru Xiang, Sebastiaan P. C. van Schie, Luca Scotzniovsky, Jiayao Yan, David Kamensky, John T. Hwang. Automating adjoint sensitivity analysis for multidisciplinary models involving partial differential equations. Structural and Multidisciplinary Optimization (in press 2024, per CV), 2024.DOIPDF
@article{xiang2024automating, author = {Ru Xiang and Sebastiaan P. C. van Schie and Luca Scotzniovsky and Jiayao Yan and David Kamensky and John T. Hwang}, title = {Automating adjoint sensitivity analysis for multidisciplinary models involving partial differential equations}, journal = {Structural and Multidisciplinary Optimization (in press 2024, per CV)}, year = {2024}, doi = {10.21203/rs.3.rs-4265983/v1}, url = {https://doi.org/10.21203/rs.3.rs-4265983/v1}, note = {Metadata verification: Crossref title} } - Han Zhao, David Kamensky, John T. Hwang, Jiun-Shyan Chen. Automated shape and thickness optimization for non-matching isogeometric shells using free-form deformation. Engineering with Computers, 2024.DOIPDF
@article{zhao2024automated, author = {Han Zhao and David Kamensky and John T. Hwang and Jiun-Shyan Chen}, title = {Automated shape and thickness optimization for non-matching isogeometric shells using free-form deformation}, journal = {Engineering with Computers}, year = {2024}, volume = {40}, number = {6}, pages = {3495-3518}, doi = {10.1007/s00366-024-01947-7}, url = {https://doi.org/10.1007/s00366-024-01947-7}, note = {Metadata verification: Crossref DOI} } - Han Zhao, John T. Hwang, Jiun-Shyan Chen. Shape optimization of non-matching isogeometric shells with moving intersections. Computer Methods in Applied Mechanics and Engineering, 2024.DOIPDF
@article{zhao2024shape, author = {Han Zhao and John T. Hwang and Jiun-Shyan Chen}, title = {Shape optimization of non-matching isogeometric shells with moving intersections}, journal = {Computer Methods in Applied Mechanics and Engineering}, year = {2024}, volume = {431}, pages = {117322}, doi = {10.1016/j.cma.2024.117322}, url = {https://doi.org/10.1016/j.cma.2024.117322}, note = {Metadata verification: Crossref DOI} } - Ryan M. Anderson, Andrew Ning, Ru Xiang, Sebastiaan P. C. van Schie, Mark Sperry, Darshan Sarojini, David Kamensky, John T. Hwang. Aerostructural Predictions Combining FEniCS and a Viscous Vortex Particle Method FLOWVPM. AIAA SciTech 2023 Forum, 2023.PDF
@inproceedings{anderson2023aerostructural, author = {Ryan M. Anderson and Andrew Ning and Ru Xiang and Sebastiaan P. C. van Schie and Mark Sperry and Darshan Sarojini and David Kamensky and John T. Hwang}, title = {Aerostructural Predictions Combining FEniCS and a Viscous Vortex Particle Method FLOWVPM}, booktitle = {AIAA SciTech 2023 Forum}, year = {2023}, note = {Metadata verification: Crossref unavailable: HTTPError} } - Zeyu Cheng, Zhi Cao, John T. Hwang, Chris Mi. A Novel Single-Turn Permanent Magnet Synchronous Machine for Electric Aircraft. Energies, 2023.DOIPDF
@article{cheng2023novel, author = {Zeyu Cheng and Zhi Cao and John T. Hwang and Chris Mi}, title = {A Novel Single-Turn Permanent Magnet Synchronous Machine for Electric Aircraft}, journal = {Energies}, year = {2023}, volume = {16}, number = {3}, pages = {1041}, doi = {10.3390/en16031041}, url = {https://doi.org/10.3390/en16031041}, note = {Metadata verification: Crossref DOI} } - Victor Gandarillas, Anugrah Jo Joshy, Mark Z. Sperry, Alexander K. Ivanov, John T. Hwang. A Graph-Based Methodology for Constructing Computational Models that Automates Adjoint-Based Sensitivity Analysis. Structural and Multidisciplinary Optimization 67.5 (2024), p. 76, 2023.PDF
@article{gandarillas2023graph, author = {Victor Gandarillas and Anugrah Jo Joshy and Mark Z. Sperry and Alexander K. Ivanov and John T. Hwang}, title = {A Graph-Based Methodology for Constructing Computational Models that Automates Adjoint-Based Sensitivity Analysis}, journal = {Structural and Multidisciplinary Optimization 67.5 (2024), p. 76}, 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, Darshan Sarojini, Luca Scotzniovsky, Hyunjune Gill, Seongkyu Lee, Zeyu Cheng, Shuofeng Zhao, Chris Mi, John T. Hwang. Air-taxi transition trajectory optimization with physics-based models. AIAA SCITECH 2023 Forum, 2023.DOIPDF
@inproceedings{orndorff2023air, author = {Nicholas C. Orndorff and Darshan Sarojini and Luca Scotzniovsky and Hyunjune Gill and Seongkyu Lee and Zeyu Cheng and Shuofeng Zhao and Chris Mi and John T. Hwang}, title = {Air-taxi transition trajectory optimization with physics-based models}, booktitle = {AIAA SCITECH 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-0324}, url = {https://doi.org/10.2514/6.2023-0324}, 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} } - Mark Sperry, Kavish Kondap, John T. Hwang. Automatic adjoint sensitivity analysis of models for large-scale multidisciplinary design optimization. AIAA AVIATION 2023 Forum, 2023.DOIPDF
@inproceedings{sperry2023automatic, author = {Mark Sperry and Kavish Kondap and John T. Hwang}, title = {Automatic adjoint sensitivity analysis of models for large-scale multidisciplinary design optimization}, booktitle = {AIAA AVIATION 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-3721}, url = {https://doi.org/10.2514/6.2023-3721}, note = {Metadata verification: Crossref title} } - Sebastiaan P. van Schie, John T. Hwang. Model Reduction of Isogeometric Shell Structures For Large-Scale Design Optimization. AIAA AVIATION 2023 Forum, 2023.DOIPDF
@inproceedings{vanschie2023model, author = {Sebastiaan P. van Schie and John T. Hwang}, title = {Model Reduction of Isogeometric Shell Structures For Large-Scale Design Optimization}, booktitle = {AIAA AVIATION 2023 Forum}, year = {2023}, doi = {10.2514/6.2023-3720}, url = {https://doi.org/10.2514/6.2023-3720}, note = {Metadata verification: Crossref title} } - Bingran Wang, Nicholas C. Orndorff, Mark Sperry, John T. Hwang. High-Dimensional Uncertainty Quantification Using Graph-Accelerated Non-Intrusive Polynomial Chaos and Active Subspace Methods. AIAA Aviation 2023 Forum, 2023.PDF
@inproceedings{wang2023high, author = {Bingran Wang and Nicholas C. Orndorff and Mark Sperry and John T. Hwang}, title = {High-Dimensional Uncertainty Quantification Using Graph-Accelerated Non-Intrusive Polynomial Chaos and Active Subspace Methods}, booktitle = {AIAA Aviation 2023 Forum}, year = {2023}, note = {Metadata verification: Crossref unavailable: HTTPError} } - Nicholas C. Orndorff, John T. Hwang. Investigation of Optimal Air-Taxi Transition Profiles using Direct-Transcription Trajectory Optimization. AIAA AVIATION 2022 Forum, 2022.DOIPDF
@inproceedings{orndorff2022investigation, author = {Nicholas C. Orndorff and John T. Hwang}, title = {Investigation of Optimal Air-Taxi Transition Profiles using Direct-Transcription Trajectory Optimization}, booktitle = {AIAA AVIATION 2022 Forum}, year = {2022}, doi = {10.2514/6.2022-3485}, url = {https://doi.org/10.2514/6.2022-3485}, note = {Metadata verification: Crossref title} } - Bingran Wang, Mark Sperry, Victor E. Gandarillas, John T. Hwang. Efficient Uncertainty Propagation Through Computational Graph Modification and Automatic Code Generation. AIAA Aviation 2022 Forum, 2022.PDF
@inproceedings{wang2022efficient, author = {Bingran Wang and Mark Sperry and Victor E. Gandarillas and John T. Hwang}, title = {Efficient Uncertainty Propagation Through Computational Graph Modification and Automatic Code Generation}, booktitle = {AIAA Aviation 2022 Forum}, year = {2022}, note = {Metadata verification: source PDF/CV; no DOI recovered} } - Bingran Wang, Anugrah Jo Joshy, John T. Hwang. Equality-Constrained Engineering Design Optimization Using a Novel Inexact Quasi-Newton Method. AIAA Journal, 2022.DOIPDF
@article{wang2022equality, author = {Bingran Wang and Anugrah Jo Joshy and John T. Hwang}, title = {Equality-Constrained Engineering Design Optimization Using a Novel Inexact Quasi-Newton Method}, journal = {AIAA Journal}, year = {2022}, volume = {60}, number = {11}, pages = {6157-6167}, doi = {10.2514/1.j061695}, url = {https://doi.org/10.2514/1.j061695}, note = {Metadata verification: Crossref DOI} } - Jiayao Yan, John T. Hwang. A frequency-domain-inspired reformulation of the unsteady vortex lattice method. AIAA AVIATION 2022 Forum, 2022.DOIPDF
@inproceedings{yan2022frequency, author = {Jiayao Yan and John T. Hwang}, title = {A frequency-domain-inspired reformulation of the unsteady vortex lattice method}, booktitle = {AIAA AVIATION 2022 Forum}, year = {2022}, doi = {10.2514/6.2022-3788}, url = {https://doi.org/10.2514/6.2022-3788}, note = {Metadata verification: Crossref DOI} } - Jiayao Yan, Ru Xiang, David Kamensky, Michael T. Tolley, John T. Hwang. Topology optimization with automated derivative computation for multidisciplinary design problems. Structural and Multidisciplinary Optimization, 2022.DOIPDF
@article{yan2022topology, author = {Jiayao Yan and Ru Xiang and David Kamensky and Michael T. Tolley and John T. Hwang}, title = {Topology optimization with automated derivative computation for multidisciplinary design problems}, journal = {Structural and Multidisciplinary Optimization}, year = {2022}, volume = {65}, number = {5}, pages = {1--20}, doi = {10.1007/s00158-022-03168-2}, url = {https://doi.org/10.1007/s00158-022-03168-2}, note = {Metadata verification: Crossref DOI} } - Han Zhao, Xiangbei Liu, Andrew H. Fletcher, Ru Xiang, John T. Hwang, David Kamensky. An open-source framework for coupling non-matching isogeometric shells with application to aerospace structures. Computers & Mathematics with Applications, 2022.DOIPDF
@article{zhao2022open, author = {Han Zhao and Xiangbei Liu and Andrew H. Fletcher and Ru Xiang and John T. Hwang and David Kamensky}, title = {An open-source framework for coupling non-matching isogeometric shells with application to aerospace structures}, journal = {Computers & Mathematics with Applications}, year = {2022}, volume = {111}, pages = {109-123}, doi = {10.1016/j.camwa.2022.02.007}, url = {https://doi.org/10.1016/j.camwa.2022.02.007}, note = {Metadata verification: Crossref DOI} }
This project develops computational models and optimization algorithms for faster, more effective design of urban air mobility vehicles. It builds a large-scale multidisciplinary design, analysis and optimization framework and applies it to three technical challenge problems.
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