Publications

Published Articles

  1. M. Rahman, M. Akbar, A. K. Saha, B. Jo, and R. A. Roberts, “Aerodynamic study of Boeing 737 MAX 8 in cruise condition using computational fluid dynamics techniques,” Aerospace Systems, Oct. 2026, doi: https://doi.org/10.1007/s42401-026-00559-x.
  2. Tharpe, G. Layhew, D. T. Cannon, and R. A. Roberts, “Impact of Ammonia Cracking on NOx Emissions in Turbulent Ammonia Combustion,” Energies, vol. 19, no. 18, Sep. 2026, doi: https://doi.org/10.3390/en19184297. [Online]. Available: https://www.mdpi.com/1996-1073/19/18/4297
  3. T. J. Kramer, D. Schafer, G. Layhew, T. A. Cannon, S. Chumney, and R. A. Roberts, “SOFC polarization curve normalization and reduced order model generation for rapid and accurate performance prediction,” Energy Conversion and Management: X, vol. 30, no. May 2026, p. 101622, May 2026, doi: 10.1016/j.ecmx.2026.101622. [Online]. Available: https://www.sciencedirect.com/science/article/pii/S2590174526001054?via%3Dihub
  4. R. Medlin, S. Meeks, A. Vasel-Be-Hagh, J. Damazo, and R. A. Roberts, “Ammonia versus kerosene contrails: A review,” Progress in Aerospace Sciences, vol. 153, p. 101074, Feb. 2025, doi: https://doi.org/10.1016/j.paerosci.2024.101074. [Online]. Available: https://www.sciencedirect.com/science/article/pii/S0376042124001003
  5. T. Cannon et al., “Thermodynamic evaluation of contrail formation from a conventional jet fuel and an ammonia-based aviation propulsion system,” Communications Engineering, vol. 3, no. 1, pp. 1–12, Nov. 2024, doi: 10.1038/s44172-024-00312-2. [Online]. Available: http://dx.doi.org/10.1038/s44172-024-00312-2
  6. N. Butt, R. A. Roberts, and S. Patnaik, “Laser Diode Optical Output Dependence on Junction Temperature for High-Power Laser Systems,” Optics and Laser Technology, 2020 [Online]. Available: 115 W. 10th Street
  7. N. Butt, R. A. Roberts, and S. Patnaik, “Transient temperature effects on the optical power wavelength shift of a high-power laser system,” Applied Thermal Engineering, vol. 156, 2019, doi: 10.1016/j.applthermaleng.2019.04.060.
  8. N. Butt, R. A. Roberts, and S. Patnaik, “Transient Temperature Effects on the Optical Power Wavelength Shift of a High-Power Laser System,” Applied Thermal Engineering,, 2019 [Online]. Available: 115 W. 10th Street
  9. R. A. Roberts and J. Doty, “Implementation of a transient exergy analysis for a plate-fin heat exchanger,” International Journal of Exergy, vol. 16, no. 1, 2015, doi: 10.1504/IJEX.2015.067302.
  10. R. A. Roberts and D. Decker, “Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System,” Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME, vol. 136, no. 4, 2014, doi: 10.1115/1.4026412.
  11. R. A. Roberts and S. Eastbourn, “Modeling techniques for a computational efficient dynamic turbofan engine model,” International Journal of Aerospace Engineering, vol. 2014, 2014, doi: 10.1155/2014/283479.
  12. R. A. Roberts and S. Eastbourn, “Vehicle level tip-to-tail modeling of an aircraft,” International Journal of Thermodynamics, vol. 17, no. 2, 2014, doi: 10.5541/ijot.523.
  13. R. A. Roberts, J. Brouwer, and G. Samuelsen, “Fuel cell/gas turbine hybrid system control for daily load profile and ambient condition variation,” Journal of Engineering for Gas Turbines and Power, no. 1, 2010 [Online]. Available: https://asmedigitalcollection.asme.org/gasturbinespower/article/132/1/012302/409155/Fuel-Cell-Gas-Turbine-Hybrid-System-Control-for
  14. F. Mueller, F. Jabbari, J. Brouwer, R. A. Roberts, T. Junker, and H. Ghezel-Ayagh, “Control design for a bottoming solid oxide fuel cell gas turbine hybrid system,” Journal of Fuel Cell Science and Technology, vol. 4, no. 3, 2007, doi: 10.1115/1.2713785.
  15. Traverso, A. Massardo, R. A. Roberts, J. Brouwer, and S. Samuelsen, “Gas turbine assessment for air management of pressurized SOFC/GT hybrid systems,” Journal of Fuel Cell Science and Technology, vol. 4, no. 4, 2007, doi: 10.1115/1.2714567.
  16. F. Mueller, F. Jabbari, J. Brouwer, R. A. Roberts, T. Junker, and H. Ghezel-Ayagh, “Control Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System,” Journal of Fuel Cell Science and Technology, vol. 4, no. 3, pp. 221–230, Dec. 2006.
  17. R. A. Roberts and J. Brouwer, “Dynamic simulation of a pressurized 220 kW solid oxide fuel-cell-gas-turbine hybrid system: Modeled performance compared to measured results,” Journal of Fuel Cell Science and Technology, vol. 3, no. 1, 2006, doi: 10.1115/1.2133802.
  18. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, “Dynamic simulation of carbonate fuel cell-gas turbine hybrid systems,” Journal of Engineering for Gas Turbines and Power, vol. 128, no. 2, 2006, doi: 10.1115/1.1852565.
  19. R. A. Roberts, J. Brouwer, F. Jabbari, T. Junker, and H. Ghezel-Ayagh, “Control design of an atmospheric solid oxide fuel cell/gas turbine hybrid system: Variable versus fixed speed gas turbine operation,” Journal of Power Sources, vol. 161, no. 1, pp. 484–491, Oct. 2006, doi: 10.1016/j.jpowsour.2006.03.059.
  20. Traverso, A. Massardo, R. A. Roberts, J. Brouwer, and S. Samuelsen, “Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems,” Journal of Fuel Cell Science and Technology, vol. 4, no. 4, pp. 373–383, Jun. 2006.
  21. R. A. Roberts and J. Brouwer, “Dynamic Simulation of a Pressurized 220kW Solid Oxide Fuel-Cell–Gas-Turbine Hybrid System: Modeled Performance Compared to Measured Results,” Journal of Fuel Cell Science and Technology, vol. 3, no. 1, pp. 18–25, Aug. 2005.

Conference Papers

  1. Tharpe, G. J. Layhew, and R. A. Roberts, “CFD Modeling of an NH3-Fueled GT Combustor With an NH3 Cracking Sleeve,” in AIAA AVIATION 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-4631 [Online]. Available: https://arc.aiaa.org/doi/10.2514/6.2026-4631
  2. E. Pesterfield, D. Schafer, C. Roberson, and R. A. Roberts, “Comparative Electrochemical Behavior Analysis of a Tubular Solid Oxide Fuel Cell on Hydrogen and Jet-A Reformate for Aircraft Auxiliary Power Units,” in AIAA AVIATION 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-4685 [Online]. Available: https://arc.aiaa.org/doi/pdf/10.2514/6.2026-4685?download=true
  3. Niec and R. A. Roberts, “Comparison of Blade Element Theory and CFD Simulation as Methods for Propeller Design,” in AIAA AVIATION 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-4374 [Online]. Available: https://arc.aiaa.org/doi/10.2514/6.2026-4374
  4. G. J. Layhew, A. Tharpe, B. Steger, D. T. Cannon, and R. A. Roberts, “Effect of Intermolecular Potentials on NOx Emissions in Ammonia Combustion Using an Equilibrium Approach,” in AIAA AVIATION 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-1622 [Online]. Available: https://arc.aiaa.org/doi/10.2514/6.2026-4431
  5. G. J. Layhew, D. Schafer, M. Mckaskle, D. T. Cannon, and R. A. Roberts, “Exploration of the CLEAN Ammonia Fed SOFCC-GT Turbofan for Use in Commercial Aerospace,” in AIAA AVIATION 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-4731 [Online]. Available: https://arc.aiaa.org/doi/10.2514/6.2026-4731
  6. Tharpe, G. J. Layhew, T. Cannon, and R. A. Roberts, “CFD Analysis of the Impact of Ammonia Cracking on NOx Emissions in Turbulent Combustion,” in AIAA SCITECH 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-1622 [Online]. Available: https://arc.aiaa.org/doi/epdf/10.2514/6.2026-1622
  7. Roberson, T. Cannon, D. Schafer, T. Kramer, and R. A. Roberts, “Experimental Setup of a Lightweight Onboard Desulfurizer for SOFC-GT Hybrid Systems Utilizing Logistics Fuels,” in AIAA SCITECH 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-0650 [Online]. Available: https://arc.aiaa.org/doi/10.2514/6.2026-0650
  8. Schafer, T. Kramer, C. Roberson, T. Matheney, and R. A. Roberts, “Testing of Solid Oxide Fuel Cells Using Ammonia for Carbonless Aviation Applications,” in AIAA SCITECH 2026 Forum, 2026, doi: https://doi.org/10.2514/6.2026-0648 [Online]. Available: https://arc.aiaa.org/doi/epdf/10.2514/6.2026-0648
  9. S. Chumney, G. J. Layhew, D. Schafer, and R. A. Roberts, “Axial Fan Particle Swarm Optimization for a High-Bypass SOFCC-GT Hybrid System,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3063 [Online]. Available: https://doi.org/10.2514/6.2025-3063
  10. B. Tharpe, G. J. Layhew, and R. A. Roberts, “CFD Assessment of the Accuracy of Using the Gibbs Minimization Method for the Prediction of Combustion Emissions,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3132 [Online]. Available: https://doi.org/10.2514/6.2025-3132
  11. E. C. Pesterfield et al., “Development of a Combustor for Integration with a Solid Oxide Fuel Cell Bundle for Hybrid-Electric Aircraft Power Applications,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3628 [Online]. Available: https://doi.org/10.2514/6.2025-3628
  12. J. Roberson, D. Schafer, and R. A. Roberts, “Integration of Residual Gas Analysis Mass Spectrometry Into a Solid Oxide Fuel Cell Test Stand for Emissions Characterization,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3202 [Online]. Available: https://doi.org/10.2514/6.2025-3202
  13. L. A. Hohman et al., “Investigation of Various Electrofuels for Potential Use in Aviation,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3135 [Online]. Available: https://doi.org/10.2514/6.2025-3135
  14. Schafer, T. J. Kramer, C. J. Roberson, and R. A. Roberts, “Testing of Solid Oxide Fuel Cells on Various Fuels for Use in Hybrid Power Generation Systems for Aviation,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3201 [Online]. Available: https://doi.org/10.2514/6.2025-3201
  15. G. J. Layhew and R. A. Roberts, “Thermal Degradation of Homogeneous Tubular SOFC’s and Its Effects on System Level Performance for an Ammonia Fed SOFC-C-GT Hybrid System for Commercial Aviation,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3065 [Online]. Available: https://doi.org/10.2514/6.2025-3065
  16. G. J. Layhew, R. A. Roberts, and T. Cannon, “Two Degree of Freedom Model and Autopilot Controls Development for an Ammonia Fed SOFCC-GT Hybrid System for Commercial Aviation,” in AIAA AVIATION FORUM AND ASCEND 2025, 2025, doi: doi:10.2514/6.2025-3066 [Online]. Available: https://doi.org/10.2514/6.2025-3066
  17. G. J. Layhew, R. A. Roberts, D. Schafer, and T. J. Kramer, “Dynamic Modeling of Fuel Thermal Management System for SOFC-GT Hybrid Propulsion System,” in AIAA SciTech 2025 Forum, 2025, doi: doi:10.2514/6.2025-0908 [Online]. Available: https://doi.org/10.2514/6.2025-0908
  18. Schafer, T. J. Kramer, R. A. Roberts, and M. Gong, “Investigation of Solid Oxide Fuel Cell Seals in Aerospace Applications,” in AIAA SciTech 2025 Forum, 2025, doi: doi:10.2514/6.2025-0507 [Online]. Available: https://doi.org/10.2514/6.2025-0507
  19. Schafer, R. A. Roberts, and T. J. Kramer, “Investigation of Solid Oxide Fuel Cell Seals in Aerospace Applications,” in AIAA SCITECH 2025 Forum, 2025, vol. AIAA 2025-1130 [Online]. Available: 115 W. 10th Street
  20. B. Tharpe, R. A. Roberts, and T. J. Kramer, “Performance Comparison of a Traditional Turbofan Engine With a Inter-Stage Burn Turbine Engine,” in AIAA SCITECH 2025 Forum, 2025, vol. AIAA 2025-1130.
  21. T. J. Kramer, R. A. Roberts, A. Bain, and J. Meacham, “High Speed Aircraft Power Generation with Liquid Natural Gas combined Power and Thermal Management System,” in AIAA SciTech Forum, 2024, January., pp. 1–21.
  22. M. Zhang, T. Kramer, T. Ohrn, R. A. Roberts, and K. Nawaz, “A NUMERICAL STUDY OF HEAT TRANSFER IN THE FUEL CELL OF A SOLID OXIDE FUEL CELL-COMBUSTOR,” in 9th Thermal and Fluids Engineering Conference, 2024, pp. 319-327, doi: 10.1615/TFEC2024.cbf.050721.
  23. Layhew, R. A. Roberts, D. Schafer, and T. Kramer, “Dynamic Modeling and Controlling Ammonia Fueled SOFCC-GT Hybrid System for Commercial Aviation,” in AIAA AVIATION FORUM AND ASCEND 2024, 2024, AIAA 2024-3963.
  24. T. Kramer, R. A. Roberts, A. Bain, J. Meacham, and J. Webster, “High Speed Aircraft Power Generation with Liquid Natural Gas combined Power and Thermal Management System,” in AIAA SCITECH 2024 Forum, 2024, AIAA 2024-1704., doi: 10.2514/6.2024-1704.
  25. D. Schafer, G. Layhew, T. Kramer, and R. A. Roberts, “Investigation of Power Split in an Ammonia Gas Turbine and SOFC Hybrid Propulsion System,” in AIAA AVIATION FORUM AND ASCEND 2024, 2024, AIAA 2024-3708.
  26. T. Kramer, R. A. Roberts, D. Schafer, and N. Simpson, “Solid Oxide Fuel Cell based Electric Aircraft Power Plant: Mass Modeling, Optimization, and Application,” in AIAA AVIATION FORUM AND ASCEND 2024, 2024, AIAA 2024-3707.
  27. M. A. Gong, A. Tharpe, A. Vaselbehagh, and R. A. Roberts, “Preliminary Hazard Identification and Risk Assessment for Liquid Ammonia Fuel Safety in Zero-Emission Fuel-Cell-Hybrid Electric Aircraft,” in American Institute of Aeronautics and Astronautics, 2024, vol. AIAA AVIATION FORUM AND ASCEND 2024, doi: https://doi.org/10.2514/6.2024-3878 [Online]. Available: https://arc.aiaa.org/doi/abs/10.2514/6.2024-3878
  28. J. A. Meacham, T. A. Kramer, and R. A. Roberts, “Analysis of Active Cooling System for High Power Density Bio-LNG Cooled Electric Motors for Electric Aircraft,” 2023.
  29. T. A. Kramer, J. A. Webster, and R. A. Roberts, “Dynamic Modeling, Simulation, and Controls of a SOFC Combustor Hybrid Cycle for Commercial Electric Aviation,” 2023.
  30. Bain et al., “Solid Oxide Fuel Cell Manufacture by Computationally Driven Aerosol Jet Printing,” 2023.
  31. J. W. Meacham, R. A. Roberts, and T. J. Kramer, “Analysis of Active Cooling System for High Power Density Bio-LNG Cooled Electric Motors for Electric Aircraft,” in AIAA SciTech 2023 Forum, 2023, doi: doi:10.2514/6.2023-1774 [Online]. Available: https://doi.org/10.2514/6.2023-1774
  32. T. J. Kramer, R. A. Roberts, and J. Webster, “Dynamic Modeling, Simulation, and Controls of a SOFC Combustor Hybrid Cycle for Commercial Electric Aviation,” in AIAA SciTech 2023 Forum, 2023, doi: doi:10.2514/6.2023-1461 [Online]. Available: https://doi.org/10.2514/6.2023-1461
  33. T. Kramer, J. Webster, and R. A. Roberts, “Analysis of Post Combustion in Solid Oxide Fuel Cell Combustor Gas Turbine Hybrid Power Generation Cycle,” in AIAA SCITECH 2022 Forum, 2022, doi: https://doi.org/10.2514/6.2022-0315.
  34. N. Payne, M. Wolff, R. A. Roberts, L. Elston, and J. McCoppin, “Experimental Validation of a Combined Thermal Management and Power Generation System using a Multi-Mode Rankine Cycle,” in 2020 AIAA Propulsion and Energy Forum and Exposition, 2022.
  35. Chandoke, T. Deppen, G. Jackson, R. A. Roberts, and K. Semega, “A Conceptual Design and Optimization Tool for Integration of Propulsion, Power, Thermal and Controls,” in 2019 JANAF Propulsion Meeting, 2019.
  36. N. Butt, M. Wolff, R. A. Roberts, and S. Thomas, “A cryogenic palletized high energy pulse system,” in 2018 International Energy Conversion Engineering Conference, 2018, pp. 1–12, doi: 10.2514/6.2018-4487.
  37. DeSomma, R. A. Roberts, M. Wolff, and A. Behbahani, “Power/Thermal Interaction within an Adaptive Turbine Engine,” in AIAA Aerospace Sciences Meeting, 2018, 2018, 210059th ed., doi: 10.2514/6.2018-0630.
  38. N. Butt, M. Wolff, R. A. Roberts, and S. Patnaik, “Transient temperature effects on a high energy pulse system model,” in 2018 International Energy Conversion Engineering Conference, 2018, doi: 10.2514/6.2018-4489.
  39. R. Buettner, R. A. Roberts, M. Wolff, and A. Behbahani, “Design of a transient variable cycle turbine engine model for system integration with controls,” in AIAA Modeling and Simulation Technologies Conference, 2017, 2017, doi: 10.2514/6.2017-1940.
  40. N. McGillivray, M. Wolff, and R. A. Roberts, “CFD Analysis and Optimization of a Simplified Scramjet Engine Model,” in 2017 AIAA Propulsion and Energy Forum and Exposition, 2017.
  41. V. A. Chakravarthula and R. A. Roberts, “Transient Analysis of an Innovative Cycle Integrating a SOFC and a Turbogenerator for Electric Propulsion,” in ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, 2017, GT2017-64804.
  42. M. Bracey, S. Nuzum, R. A. Roberts, M. Wolff, and J. Zumberge, “Air cycle machine transient modeling with exergy analysis,” in 14th International Energy Conversion Engineering Conference, 2016, 2016, doi: 10.2514/6.2016-5004.
  43. V. Adithya, R. A. Roberts, and M. Wolff, “Altitude Effects on Solid Oxide Fuel Cell Performance,” in AIAA Propulsion and Energy Forum, 2016, pp. 1–14, doi: 10.2514/6.2016-4718.
  44. Schroder, M. Turner, and R. A. Roberts, “Combined cycle engine cascades achieving high efficiency,” in Proceedings of the ASME Turbo Expo, 2016, vol. 3, doi: 10.1115/GT2016-58004.
  45. S. Nuzum, A. Donovan, R. A. Roberts, and M. Wolff, “Dynamic modeling at a vehicle level of a cryogenic based thermal system for a high powered system,” in 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2016.
  46. R. Buettner, R. A. Roberts, and M. Wolff, “Dynamic modeling of a mixed-flow afterburning turbofan using MATLAB\textregistered/Simulink\textregistered,” in 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016, 2016, doi: 10.2514/6.2016-5061.
  47. Donovan, M. Bracey, R. A. Roberts, M. Wolff, and K. Yerkes, “Enhanced ECS/generator models in an integrated air vehicle platform,” in 14th International Energy Conversion Engineering Conference, 2016, 2016, doi: 10.2514/6.2016-4915.
  48. Donovan, S. Nuzum, R. A. Roberts, and M. Wolff, “Impact of high energy pulsed systems on an aircraft’s power and thermal management system,” in 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2016.
  49. Behbahani, R. A. Roberts, and A. Chandoke, “Intelligent nodal-based controls technologies for integrated propulsion energy/power/thermal management systems,” in 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016, 2016, doi: 10.2514/6.2016-4804.
  50. M. Turner et al., “Thrust vectoring design project at six universities,” in International Journal of Engineering Education, 2016, 1st ed., vol. 32.
  51. V. A. Chakravarthula, R. A. Roberts, and M. Wolff, “Dynamic Model of Solid Oxide Fuel Cell Integrated with Fan and Exhaust Nozzle,” in 14th International Energy Conversion Engineering Conference, 2016, doi: doi:10.2514/6.2016-4718.
  52. R. A. Roberts, M. Wolff, S. Nuzum, and A. Donovan, “Assessment of the vehicle level impact for a SOFC integrated with the power and thermal management system of an air vehicle,” in ASME 2015 Dynamic Systems and Control Conference, DSCC 2015, 2015, vol. 1, doi: 10.1115/DSCC2015-9853.
  53. R. A. Roberts, I. Rossi, and A. Traverso, “Dynamic simulation of energy systems: Comparison of a physicsbased against time constant based approach applied to a microturbine test rig,” in Proceedings of the ASME Turbo Expo, 2015, vol. 8, doi: 10.1115/GT2015-42651.
  54. Donovan, R. A. Roberts, and M. Wolff, “Fuel pump trade study for a conceptual design of an integrated air vehicle system,” in 51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015, doi: 10.2514/6.2015-4172.
  55. R. A. Roberts, S. Nuzum, and M. Wolff, “Liquefied natural gas as the next aviation fuel,” in 13th International Energy Conversion Engineering Conference, 2015, doi: 10.2514/6.2015-4247.
  56. S. Nuzum, R. A. Roberts, and M. Wolff, “Various integrated aerospace systems utilizing a cryogenic fluid,” in 13th International Energy Conversion Engineering Conference, 2015, doi: 10.2514/6.2015-4245.
  57. R. A. Roberts and P. Therkelsen, “Aircraft engine electrical power generation with a SOFC combustor,” in Proceedings of the ASME Turbo Expo, 2014, vol. 3A, doi: 10.1115/GT2014-27106.
  58. R. A. Roberts and D. D. Decker, “Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System,” in Proceedings of the ASME Turbo Expo, 2013, vol. 4, doi: 10.1115/GT2013-95922.
  59. R. A. Roberts and D. Decker, “Energy optimization of an aircraft focused on component sizing and control architecture interactions,” in 11th International Energy Conversion Engineering Conference, 2013, doi: 10.2514/6.2013-3805.
  60. M. Turner et al., “Thrust vectoring design project at six universities (PART I): Project description and final designs,” in Proceedings of the ASME Turbo Expo, 2013, vol. 4, doi: 10.1115/GT2013-95602.
  61. M. Rumpfkeil et al., “Thrust vectoring design project at six universities (PART II): Impact on student learning and lessons learned,” in Proceedings of the ASME Turbo Expo, 2013, vol. 4, doi: 10.1115/GT2013-95631.
  62. R. A. Roberts and J. Doty, “Implementation of a non-equilibrium exergy analysis for an aircraft thermal management system,” in 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2012, doi: 10.2514/6.2012-1126.
  63. R. A. Roberts, S. Eastbourn, and A. Maser, “Generic aircraft thermal tip-to-tail modeling and simulation,” in 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011, 2011, doi: 10.2514/6.2011-5971.
  64. S. Eastbourn and R. A. Roberts, “Modeling and simulation of a dynamic turbofan engine using Simulink,” in 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011, 2011, doi: 10.2514/6.2011-6100.
  65. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, “Development of controls for dynamic operation of carbonate fuel cell-gas turbine hybrid systems,” in Proceedings of the ASME Turbo Expo, 2005, vol. 5, doi: 10.1115/GT2005-68774.
  66. Traverso, A. Massardo, R. A. Roberts, S. Samuelsen, and J. Brouwer, “Gas turbine assessment for air management of pressurized SOFC/GT hybrid systems,” in Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005 – Book of Abstracts, 2005, vol. 2005.
  67. Traverso, A. Massardo, R. A. Roberts, S. Samuelsen, and J. Brouwer, “Gas turbine assessment for air management of pressurized SOFC/GT hybrid systems,” in Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005 – Book of Abstracts, 2005, vol. 2005.
  68. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, “Dynamic simulation of carbonate fuel cell-gas turbine hybrid systems,” in Proceedings of the ASME Turbo Expo 2004, 2004, vol. 7, doi: 10.1115/gt2004-53653.
  69. R. A. Roberts, J. Brouwer, and S. Samuelsen, “Dynamic simulation of fuel cell systems,” in ACS National Meeting Book of Abstracts, 2004, 1st ed., vol. 228.
  70. R. A. Roberts, I. Tumer, R. Stone, and A. Brown, “A function-based exploration of JPL’s problem/failure reporting database,” in American Society of Mechanical Engineers, Design Engineering Division (Publication) DE, 2003, 1st ed., vol. 116, doi: 10.1115/IMECE2003-42769.
  71. R. A. Roberts, F. Jabbari, J. Brouwer, R. Gemmen, and E. Liese, “Inter-laboratory dynamic modeling of a carbonate fuel cell for hybrid application,” in American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, 2003, vol. 2, doi: 10.1115/GT2003-38774.
  72. R. A. Roberts, R. Stone, and I. Tumer, “Deriving function-failure similarity information for failure-free rotorcraft component design,” in Proceedings of the ASME Design Engineering Technical Conference, 2002, vol. 3, doi: 10.1115/detc2002/dfm-34166.
  73. Tumer, R. Stone, and R. A. Roberts, “Towards failure-free design: Reducing dimensionality in function-failure similarity analysis for large databases,” in ASME International Mechanical Engineering Congress and Exposition, Proceedings, 2002, doi: 10.1115/IMECE2002-33473.