{"id":8,"date":"2021-03-05T15:00:46","date_gmt":"2021-03-05T15:00:46","guid":{"rendered":"https:\/\/sites.tntech.edu\/ppats\/?page_id=8"},"modified":"2026-10-08T20:59:48","modified_gmt":"2026-10-08T20:59:48","slug":"publications-and-presentations","status":"publish","type":"page","link":"https:\/\/sites.tntech.edu\/ppats\/publications-and-presentations\/","title":{"rendered":"Publications"},"content":{"rendered":"\n

Published Articles<\/strong><\/p>\n\n\n\n

    \n
  1. M. Rahman, M. Akbar, A. K. Saha, B. Jo, and R. A. Roberts, \u201cAerodynamic study of Boeing 737 MAX 8 in cruise condition using computational fluid dynamics techniques,\u201d Aerospace Systems<\/em>, Oct. 2026, doi: https:\/\/doi.org\/10.1007\/s42401-026-00559-x<\/a>.<\/li>\n\n\n\n
  2. Tharpe, G. Layhew, D. T. Cannon, and R. A. Roberts, \u201cImpact of Ammonia Cracking on NOx Emissions in Turbulent Ammonia Combustion,\u201d Energies<\/em>, vol. 19, no. 18, Sep. 2026, doi: https:\/\/doi.org\/10.3390\/en19184297<\/a>. [Online]. Available: https:\/\/www.mdpi.com\/1996-1073\/19\/18\/4297<\/li>\n\n\n\n
  3. T. J. Kramer, D. Schafer, G. Layhew, T. A. Cannon, S. Chumney, and R. A. Roberts, \u201cSOFC polarization curve normalization and reduced order model generation for rapid and accurate performance prediction,\u201d Energy Conversion and Management: X<\/em>, 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<\/a><\/li>\n\n\n\n
  4. R. Medlin, S. Meeks, A. Vasel-Be-Hagh, J. Damazo, and R. A. Roberts, \u201cAmmonia versus kerosene contrails: A review,\u201d Progress in Aerospace Sciences<\/em>, vol. 153, p. 101074, Feb. 2025, doi: https:\/\/doi.org\/10.1016\/j.paerosci.2024.101074<\/a>. [Online]. Available: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0376042124001003<\/li>\n\n\n\n
  5. T. Cannon et al., \u201cThermodynamic evaluation of contrail formation from a conventional jet fuel and an ammonia-based aviation propulsion system,\u201d Communications Engineering<\/em>, 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<\/a><\/li>\n\n\n\n
  6. N. Butt, R. A. Roberts, and S. Patnaik, \u201cLaser Diode Optical Output Dependence on Junction Temperature for High-Power Laser Systems,\u201d Optics and Laser Technology<\/em>, 2020 [Online]. Available: 115 W. 10th Street<\/li>\n\n\n\n
  7. N. Butt, R. A. Roberts, and S. Patnaik, \u201cTransient temperature effects on the optical power wavelength shift of a high-power laser system,\u201d Applied Thermal Engineering<\/em>, vol. 156, 2019, doi: 10.1016\/j.applthermaleng.2019.04.060.<\/li>\n\n\n\n
  8. N. Butt, R. A. Roberts, and S. Patnaik, \u201cTransient Temperature Effects on the Optical Power Wavelength Shift of a High-Power Laser System,\u201d Applied Thermal Engineering,<\/em>, 2019 [Online]. Available: 115 W. 10th Street<\/li>\n\n\n\n
  9. R. A. Roberts and J. Doty, \u201cImplementation of a transient exergy analysis for a plate-fin heat exchanger,\u201d International Journal of Exergy<\/em>, vol. 16, no. 1, 2015, doi: 10.1504\/IJEX.2015.067302.<\/li>\n\n\n\n
  10. R. A. Roberts and D. Decker, \u201cControl Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System,\u201d Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME<\/em>, vol. 136, no. 4, 2014, doi: 10.1115\/1.4026412.<\/li>\n\n\n\n
  11. R. A. Roberts and S. Eastbourn, \u201cModeling techniques for a computational efficient dynamic turbofan engine model,\u201d International Journal of Aerospace Engineering<\/em>, vol. 2014, 2014, doi: 10.1155\/2014\/283479.<\/li>\n\n\n\n
  12. R. A. Roberts and S. Eastbourn, \u201cVehicle level tip-to-tail modeling of an aircraft,\u201d International Journal of Thermodynamics<\/em>, vol. 17, no. 2, 2014, doi: 10.5541\/ijot.523.<\/li>\n\n\n\n
  13. R. A. Roberts, J. Brouwer, and G. Samuelsen, \u201cFuel cell\/gas turbine hybrid system control for daily load profile and ambient condition variation,\u201d Journal of Engineering for Gas Turbines and Power<\/em>, no. 1, 2010 [Online]. Available: https:\/\/asmedigitalcollection.asme.org\/gasturbinespower\/article\/132\/1\/012302\/409155\/Fuel-Cell-Gas-Turbine-Hybrid-System-Control-for<\/a><\/li>\n\n\n\n
  14. F. Mueller, F. Jabbari, J. Brouwer, R. A. Roberts, T. Junker, and H. Ghezel-Ayagh, \u201cControl design for a bottoming solid oxide fuel cell gas turbine hybrid system,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 4, no. 3, 2007, doi: 10.1115\/1.2713785.<\/li>\n\n\n\n
  15. Traverso, A. Massardo, R. A. Roberts, J. Brouwer, and S. Samuelsen, \u201cGas turbine assessment for air management of pressurized SOFC\/GT hybrid systems,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 4, no. 4, 2007, doi: 10.1115\/1.2714567.<\/li>\n\n\n\n
  16. F. Mueller, F. Jabbari, J. Brouwer, R. A. Roberts, T. Junker, and H. Ghezel-Ayagh, \u201cControl Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 4, no. 3, pp. 221–230, Dec. 2006.<\/li>\n\n\n\n
  17. R. A. Roberts and J. Brouwer, \u201cDynamic simulation of a pressurized 220 kW solid oxide fuel-cell-gas-turbine hybrid system: Modeled performance compared to measured results,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 3, no. 1, 2006, doi: 10.1115\/1.2133802.<\/li>\n\n\n\n
  18. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, \u201cDynamic simulation of carbonate fuel cell-gas turbine hybrid systems,\u201d Journal of Engineering for Gas Turbines and Power<\/em>, vol. 128, no. 2, 2006, doi: 10.1115\/1.1852565.<\/li>\n\n\n\n
  19. R. A. Roberts, J. Brouwer, F. Jabbari, T. Junker, and H. Ghezel-Ayagh, \u201cControl design of an atmospheric solid oxide fuel cell\/gas turbine hybrid system: Variable versus fixed speed gas turbine operation,\u201d Journal of Power Sources<\/em>, vol. 161, no. 1, pp. 484–491, Oct. 2006, doi: 10.1016\/j.jpowsour.2006.03.059.<\/li>\n\n\n\n
  20. Traverso, A. Massardo, R. A. Roberts, J. Brouwer, and S. Samuelsen, \u201cGas Turbine Assessment for Air Management of Pressurized SOFC\/GT Hybrid Systems,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 4, no. 4, pp. 373–383, Jun. 2006.<\/li>\n\n\n\n
  21. R. A. Roberts and J. Brouwer, \u201cDynamic Simulation of a Pressurized 220kW Solid Oxide Fuel-Cell\u2013Gas-Turbine Hybrid System: Modeled Performance Compared to Measured Results,\u201d Journal of Fuel Cell Science and Technology<\/em>, vol. 3, no. 1, pp. 18–25, Aug. 2005.<\/li>\n<\/ol>\n\n\n\n

    Conference Papers<\/strong> <\/p>\n\n\n\n

      \n
    1. Tharpe, G. J. Layhew, and R. A. Roberts, \u201cCFD Modeling of an NH3-Fueled GT Combustor With an NH3 Cracking Sleeve,\u201d in AIAA AVIATION 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-4631<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/10.2514\/6.2026-4631<\/li>\n\n\n\n
    2. E. Pesterfield, D. Schafer, C. Roberson, and R. A. Roberts, \u201cComparative Electrochemical Behavior Analysis of a Tubular Solid Oxide Fuel Cell on Hydrogen and Jet-A Reformate for Aircraft Auxiliary Power Units,\u201d in AIAA AVIATION 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-4685<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/pdf\/10.2514\/6.2026-4685?download=true<\/li>\n\n\n\n
    3. Niec and R. A. Roberts, \u201cComparison of Blade Element Theory and CFD Simulation as Methods for Propeller Design,\u201d in AIAA AVIATION 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-4374<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/10.2514\/6.2026-4374<\/li>\n\n\n\n
    4. G. J. Layhew, A. Tharpe, B. Steger, D. T. Cannon, and R. A. Roberts, \u201cEffect of Intermolecular Potentials on NOx Emissions in Ammonia Combustion Using an Equilibrium Approach,\u201d in AIAA AVIATION 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-1622<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/10.2514\/6.2026-4431<\/li>\n\n\n\n
    5. G. J. Layhew, D. Schafer, M. Mckaskle, D. T. Cannon, and R. A. Roberts, \u201cExploration of the CLEAN Ammonia Fed SOFCC-GT Turbofan for Use in Commercial Aerospace,\u201d in AIAA AVIATION 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-4731<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/10.2514\/6.2026-4731<\/li>\n\n\n\n
    6. Tharpe, G. J. Layhew, T. Cannon, and R. A. Roberts, \u201cCFD Analysis of the Impact of Ammonia Cracking on NOx Emissions in Turbulent Combustion,\u201d in AIAA SCITECH 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-1622<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/epdf\/10.2514\/6.2026-1622<\/li>\n\n\n\n
    7. Roberson, T. Cannon, D. Schafer, T. Kramer, and R. A. Roberts, \u201cExperimental Setup of a Lightweight Onboard Desulfurizer for SOFC-GT Hybrid Systems Utilizing Logistics Fuels,\u201d in AIAA SCITECH 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-0650<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/10.2514\/6.2026-0650<\/li>\n\n\n\n
    8. Schafer, T. Kramer, C. Roberson, T. Matheney, and R. A. Roberts, \u201cTesting of Solid Oxide Fuel Cells Using Ammonia for Carbonless Aviation Applications,\u201d in AIAA SCITECH 2026 Forum<\/em>, 2026, doi: https:\/\/doi.org\/10.2514\/6.2026-0648<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/epdf\/10.2514\/6.2026-0648<\/li>\n\n\n\n
    9. S. Chumney, G. J. Layhew, D. Schafer, and R. A. Roberts, \u201cAxial Fan Particle Swarm Optimization for a High-Bypass SOFCC-GT Hybrid System,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3063 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3063<\/a><\/li>\n\n\n\n
    10. B. Tharpe, G. J. Layhew, and R. A. Roberts, \u201cCFD Assessment of the Accuracy of Using the Gibbs Minimization Method for the Prediction of Combustion Emissions,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3132 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3132<\/a><\/li>\n\n\n\n
    11. E. C. Pesterfield et al., \u201cDevelopment of a Combustor for Integration with a Solid Oxide Fuel Cell Bundle for Hybrid-Electric Aircraft Power Applications,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3628 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3628<\/a><\/li>\n\n\n\n
    12. J. Roberson, D. Schafer, and R. A. Roberts, \u201cIntegration of Residual Gas Analysis Mass Spectrometry Into a Solid Oxide Fuel Cell Test Stand for Emissions Characterization,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3202 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3202<\/a><\/li>\n\n\n\n
    13. L. A. Hohman et al., \u201cInvestigation of Various Electrofuels for Potential Use in Aviation,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3135 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3135<\/a><\/li>\n\n\n\n
    14. Schafer, T. J. Kramer, C. J. Roberson, and R. A. Roberts, \u201cTesting of Solid Oxide Fuel Cells on Various Fuels for Use in Hybrid Power Generation Systems for Aviation,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3201 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3201<\/a><\/li>\n\n\n\n
    15. G. J. Layhew and R. A. Roberts, \u201cThermal 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,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3065 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3065<\/a><\/li>\n\n\n\n
    16. G. J. Layhew, R. A. Roberts, and T. Cannon, \u201cTwo Degree of Freedom Model and Autopilot Controls Development for an Ammonia Fed SOFCC-GT Hybrid System for Commercial Aviation,\u201d in AIAA AVIATION FORUM AND ASCEND 2025<\/em>, 2025, doi: doi:10.2514\/6.2025-3066 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-3066<\/a><\/li>\n\n\n\n
    17. G. J. Layhew, R. A. Roberts, D. Schafer, and T. J. Kramer, \u201cDynamic Modeling of Fuel Thermal Management System for SOFC-GT Hybrid Propulsion System,\u201d in AIAA SciTech 2025 Forum<\/em>, 2025, doi: doi:10.2514\/6.2025-0908 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-0908<\/a><\/li>\n\n\n\n
    18. Schafer, T. J. Kramer, R. A. Roberts, and M. Gong, \u201cInvestigation of Solid Oxide Fuel Cell Seals in Aerospace Applications,\u201d in AIAA SciTech 2025 Forum<\/em>, 2025, doi: doi:10.2514\/6.2025-0507 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2025-0507<\/a><\/li>\n\n\n\n
    19. Schafer, R. A. Roberts, and T. J. Kramer, \u201cInvestigation of Solid Oxide Fuel Cell Seals in Aerospace Applications,\u201d in AIAA SCITECH 2025 Forum<\/em>, 2025, vol. AIAA 2025-1130 [Online]. Available: 115 W. 10th Street<\/li>\n\n\n\n
    20. B. Tharpe, R. A. Roberts, and T. J. Kramer, \u201cPerformance Comparison of a Traditional Turbofan Engine With a Inter-Stage Burn Turbine Engine,\u201d in AIAA SCITECH 2025 Forum<\/em>, 2025, vol. AIAA 2025-1130.<\/li>\n\n\n\n
    21. T. J. Kramer, R. A. Roberts, A. Bain, and J. Meacham, \u201cHigh Speed Aircraft Power Generation with Liquid Natural Gas combined Power and Thermal Management System,\u201d in AIAA SciTech Forum<\/em>, 2024, January., pp. 1–21.<\/li>\n\n\n\n
    22. M. Zhang, T. Kramer, T. Ohrn, R. A. Roberts, and K. Nawaz, \u201cA NUMERICAL STUDY OF HEAT TRANSFER IN THE FUEL CELL OF A SOLID OXIDE FUEL CELL-COMBUSTOR,\u201d in 9th Thermal and Fluids Engineering Conference<\/em>, 2024, pp. 319-327, doi: 10.1615\/TFEC2024.cbf.050721.<\/li>\n\n\n\n
    23. Layhew, R. A. Roberts, D. Schafer, and T. Kramer, \u201cDynamic Modeling and Controlling Ammonia Fueled SOFCC-GT Hybrid System for Commercial Aviation,\u201d in AIAA AVIATION FORUM AND ASCEND 2024<\/em>, 2024, AIAA 2024-3963.<\/li>\n\n\n\n
    24. T. Kramer, R. A. Roberts, A. Bain, J. Meacham, and J. Webster, \u201cHigh Speed Aircraft Power Generation with Liquid Natural Gas combined Power and Thermal Management System,\u201d in AIAA SCITECH 2024 Forum<\/em>, 2024, AIAA 2024-1704., doi: 10.2514\/6.2024-1704.<\/li>\n\n\n\n
    25. D. Schafer, G. Layhew, T. Kramer, and R. A. Roberts, \u201cInvestigation of Power Split in an Ammonia Gas Turbine and SOFC Hybrid Propulsion System,\u201d in AIAA AVIATION FORUM AND ASCEND 2024<\/em>, 2024, AIAA 2024-3708.<\/li>\n\n\n\n
    26. T. Kramer, R. A. Roberts, D. Schafer, and N. Simpson, \u201cSolid Oxide Fuel Cell based Electric Aircraft Power Plant: Mass Modeling, Optimization, and Application,\u201d in AIAA AVIATION FORUM AND ASCEND 2024<\/em>, 2024, AIAA 2024-3707.<\/li>\n\n\n\n
    27. M. A. Gong, A. Tharpe, A. Vaselbehagh, and R. A. Roberts, \u201cPreliminary Hazard Identification and Risk Assessment for Liquid Ammonia Fuel Safety in Zero-Emission Fuel-Cell-Hybrid Electric Aircraft,\u201d in American Institute of Aeronautics and Astronautics<\/em>, 2024, vol. AIAA AVIATION FORUM AND ASCEND 2024, doi: https:\/\/doi.org\/10.2514\/6.2024-3878<\/a> [Online]. Available: https:\/\/arc.aiaa.org\/doi\/abs\/10.2514\/6.2024-3878<\/li>\n\n\n\n
    28. J. A. Meacham, T. A. Kramer, and R. A. Roberts, \u201cAnalysis of Active Cooling System for High Power Density Bio-LNG Cooled Electric Motors for Electric Aircraft,\u201d 2023.<\/li>\n\n\n\n
    29. T. A. Kramer, J. A. Webster, and R. A. Roberts, \u201cDynamic Modeling, Simulation, and Controls of a SOFC Combustor Hybrid Cycle for Commercial Electric Aviation,\u201d 2023.<\/li>\n\n\n\n
    30. Bain et al., \u201cSolid Oxide Fuel Cell Manufacture by Computationally Driven Aerosol Jet Printing,\u201d 2023.<\/li>\n\n\n\n
    31. J. W. Meacham, R. A. Roberts, and T. J. Kramer, \u201cAnalysis of Active Cooling System for High Power Density Bio-LNG Cooled Electric Motors for Electric Aircraft,\u201d in AIAA SciTech 2023 Forum<\/em>, 2023, doi: doi:10.2514\/6.2023-1774 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2023-1774<\/a><\/li>\n\n\n\n
    32. T. J. Kramer, R. A. Roberts, and J. Webster, \u201cDynamic Modeling, Simulation, and Controls of a SOFC Combustor Hybrid Cycle for Commercial Electric Aviation,\u201d in AIAA SciTech 2023 Forum<\/em>, 2023, doi: doi:10.2514\/6.2023-1461 [Online]. Available: https:\/\/doi.org\/10.2514\/6.2023-1461<\/a><\/li>\n\n\n\n
    33. T. Kramer, J. Webster, and R. A. Roberts, \u201cAnalysis of Post Combustion in Solid Oxide Fuel Cell Combustor Gas Turbine Hybrid Power Generation Cycle,\u201d in AIAA SCITECH 2022 Forum<\/em>, 2022, doi: https:\/\/doi.org\/10.2514\/6.2022-0315<\/a>.<\/li>\n\n\n\n
    34. N. Payne, M. Wolff, R. A. Roberts, L. Elston, and J. McCoppin, \u201cExperimental Validation of a Combined Thermal Management and Power Generation System using a Multi-Mode Rankine Cycle,\u201d in 2020 AIAA Propulsion and Energy Forum and Exposition<\/em>, 2022.<\/li>\n\n\n\n
    35. Chandoke, T. Deppen, G. Jackson, R. A. Roberts, and K. Semega, \u201cA Conceptual Design and Optimization Tool for Integration of Propulsion, Power, Thermal and Controls,\u201d in 2019 JANAF Propulsion Meeting<\/em>, 2019.<\/li>\n\n\n\n
    36. N. Butt, M. Wolff, R. A. Roberts, and S. Thomas, \u201cA cryogenic palletized high energy pulse system,\u201d in 2018 International Energy Conversion Engineering Conference<\/em>, 2018, pp. 1–12, doi: 10.2514\/6.2018-4487.<\/li>\n\n\n\n
    37. DeSomma, R. A. Roberts, M. Wolff, and A. Behbahani, \u201cPower\/Thermal Interaction within an Adaptive Turbine Engine,\u201d in AIAA Aerospace Sciences Meeting, 2018<\/em>, 2018, 210059th ed., doi: 10.2514\/6.2018-0630.<\/li>\n\n\n\n
    38. N. Butt, M. Wolff, R. A. Roberts, and S. Patnaik, \u201cTransient temperature effects on a high energy pulse system model,\u201d in 2018 International Energy Conversion Engineering Conference<\/em>, 2018, doi: 10.2514\/6.2018-4489.<\/li>\n\n\n\n
    39. R. Buettner, R. A. Roberts, M. Wolff, and A. Behbahani, \u201cDesign of a transient variable cycle turbine engine model for system integration with controls,\u201d in AIAA Modeling and Simulation Technologies Conference, 2017<\/em>, 2017, doi: 10.2514\/6.2017-1940.<\/li>\n\n\n\n
    40. N. McGillivray, M. Wolff, and R. A. Roberts, \u201cCFD Analysis and Optimization of a Simplified Scramjet Engine Model,\u201d in 2017 AIAA Propulsion and Energy Forum and Exposition<\/em>, 2017.<\/li>\n\n\n\n
    41. V. A. Chakravarthula and R. A. Roberts, \u201cTransient Analysis of an Innovative Cycle Integrating a SOFC and a Turbogenerator for Electric Propulsion,\u201d in ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition<\/em>, 2017, GT2017-64804.<\/li>\n\n\n\n
    42. M. Bracey, S. Nuzum, R. A. Roberts, M. Wolff, and J. Zumberge, \u201cAir cycle machine transient modeling with exergy analysis,\u201d in 14th International Energy Conversion Engineering Conference, 2016<\/em>, 2016, doi: 10.2514\/6.2016-5004.<\/li>\n\n\n\n
    43. V. Adithya, R. A. Roberts, and M. Wolff, \u201cAltitude Effects on Solid Oxide Fuel Cell Performance,\u201d in AIAA Propulsion and Energy Forum<\/em>, 2016, pp. 1–14, doi: 10.2514\/6.2016-4718.<\/li>\n\n\n\n
    44. Schroder, M. Turner, and R. A. Roberts, \u201cCombined cycle engine cascades achieving high efficiency,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2016, vol. 3, doi: 10.1115\/GT2016-58004.<\/li>\n\n\n\n
    45. S. Nuzum, A. Donovan, R. A. Roberts, and M. Wolff, \u201cDynamic modeling at a vehicle level of a cryogenic based thermal system for a high powered system,\u201d in 57th AIAA\/ASCE\/AHS\/ASC Structures, Structural Dynamics, and Materials Conference<\/em>, 2016.<\/li>\n\n\n\n
    46. R. Buettner, R. A. Roberts, and M. Wolff, \u201cDynamic modeling of a mixed-flow afterburning turbofan using MATLAB\\textregistered\/Simulink\\textregistered,\u201d in 52nd AIAA\/SAE\/ASEE Joint Propulsion Conference, 2016<\/em>, 2016, doi: 10.2514\/6.2016-5061.<\/li>\n\n\n\n
    47. Donovan, M. Bracey, R. A. Roberts, M. Wolff, and K. Yerkes, \u201cEnhanced ECS\/generator models in an integrated air vehicle platform,\u201d in 14th International Energy Conversion Engineering Conference, 2016<\/em>, 2016, doi: 10.2514\/6.2016-4915.<\/li>\n\n\n\n
    48. Donovan, S. Nuzum, R. A. Roberts, and M. Wolff, \u201cImpact of high energy pulsed systems on an aircraft’s power and thermal management system,\u201d in 57th AIAA\/ASCE\/AHS\/ASC Structures, Structural Dynamics, and Materials Conference<\/em>, 2016.<\/li>\n\n\n\n
    49. Behbahani, R. A. Roberts, and A. Chandoke, \u201cIntelligent nodal-based controls technologies for integrated propulsion energy\/power\/thermal management systems,\u201d in 52nd AIAA\/SAE\/ASEE Joint Propulsion Conference, 2016<\/em>, 2016, doi: 10.2514\/6.2016-4804.<\/li>\n\n\n\n
    50. M. Turner et al., \u201cThrust vectoring design project at six universities,\u201d in International Journal of Engineering Education<\/em>, 2016, 1st ed., vol. 32.<\/li>\n\n\n\n
    51. V. A. Chakravarthula, R. A. Roberts, and M. Wolff, \u201cDynamic Model of Solid Oxide Fuel Cell Integrated with Fan and Exhaust Nozzle,\u201d in 14th International Energy Conversion Engineering Conference<\/em>, 2016, doi: doi:10.2514\/6.2016-4718.<\/li>\n\n\n\n
    52. R. A. Roberts, M. Wolff, S. Nuzum, and A. Donovan, \u201cAssessment of the vehicle level impact for a SOFC integrated with the power and thermal management system of an air vehicle,\u201d in ASME 2015 Dynamic Systems and Control Conference, DSCC 2015<\/em>, 2015, vol. 1, doi: 10.1115\/DSCC2015-9853.<\/li>\n\n\n\n
    53. R. A. Roberts, I. Rossi, and A. Traverso, \u201cDynamic simulation of energy systems: Comparison of a physicsbased against time constant based approach applied to a microturbine test rig,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2015, vol. 8, doi: 10.1115\/GT2015-42651.<\/li>\n\n\n\n
    54. Donovan, R. A. Roberts, and M. Wolff, \u201cFuel pump trade study for a conceptual design of an integrated air vehicle system,\u201d in 51st AIAA\/SAE\/ASEE Joint Propulsion Conference<\/em>, 2015, doi: 10.2514\/6.2015-4172.<\/li>\n\n\n\n
    55. R. A. Roberts, S. Nuzum, and M. Wolff, \u201cLiquefied natural gas as the next aviation fuel,\u201d in 13th International Energy Conversion Engineering Conference<\/em>, 2015, doi: 10.2514\/6.2015-4247.<\/li>\n\n\n\n
    56. S. Nuzum, R. A. Roberts, and M. Wolff, \u201cVarious integrated aerospace systems utilizing a cryogenic fluid,\u201d in 13th International Energy Conversion Engineering Conference<\/em>, 2015, doi: 10.2514\/6.2015-4245.<\/li>\n\n\n\n
    57. R. A. Roberts and P. Therkelsen, \u201cAircraft engine electrical power generation with a SOFC combustor,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2014, vol. 3A, doi: 10.1115\/GT2014-27106.<\/li>\n\n\n\n
    58. R. A. Roberts and D. D. Decker, \u201cControl Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2013, vol. 4, doi: 10.1115\/GT2013-95922.<\/li>\n\n\n\n
    59. R. A. Roberts and D. Decker, \u201cEnergy optimization of an aircraft focused on component sizing and control architecture interactions,\u201d in 11th International Energy Conversion Engineering Conference<\/em>, 2013, doi: 10.2514\/6.2013-3805.<\/li>\n\n\n\n
    60. M. Turner et al., \u201cThrust vectoring design project at six universities (PART I): Project description and final designs,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2013, vol. 4, doi: 10.1115\/GT2013-95602.<\/li>\n\n\n\n
    61. M. Rumpfkeil et al., \u201cThrust vectoring design project at six universities (PART II): Impact on student learning and lessons learned,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2013, vol. 4, doi: 10.1115\/GT2013-95631.<\/li>\n\n\n\n
    62. R. A. Roberts and J. Doty, \u201cImplementation of a non-equilibrium exergy analysis for an aircraft thermal management system,\u201d in 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition<\/em>, 2012, doi: 10.2514\/6.2012-1126.<\/li>\n\n\n\n
    63. R. A. Roberts, S. Eastbourn, and A. Maser, \u201cGeneric aircraft thermal tip-to-tail modeling and simulation,\u201d in 47th AIAA\/ASME\/SAE\/ASEE Joint Propulsion Conference and Exhibit 2011<\/em>, 2011, doi: 10.2514\/6.2011-5971.<\/li>\n\n\n\n
    64. S. Eastbourn and R. A. Roberts, \u201cModeling and simulation of a dynamic turbofan engine using Simulink,\u201d in 47th AIAA\/ASME\/SAE\/ASEE Joint Propulsion Conference and Exhibit 2011<\/em>, 2011, doi: 10.2514\/6.2011-6100.<\/li>\n\n\n\n
    65. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, \u201cDevelopment of controls for dynamic operation of carbonate fuel cell-gas turbine hybrid systems,\u201d in Proceedings of the ASME Turbo Expo<\/em>, 2005, vol. 5, doi: 10.1115\/GT2005-68774.<\/li>\n\n\n\n
    66. Traverso, A. Massardo, R. A. Roberts, S. Samuelsen, and J. Brouwer, \u201cGas turbine assessment for air management of pressurized SOFC\/GT hybrid systems,\u201d in Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005 – Book of Abstracts<\/em>, 2005, vol. 2005.<\/li>\n\n\n\n
    67. Traverso, A. Massardo, R. A. Roberts, S. Samuelsen, and J. Brouwer, \u201cGas turbine assessment for air management of pressurized SOFC\/GT hybrid systems,\u201d in Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005 – Book of Abstracts<\/em>, 2005, vol. 2005.<\/li>\n\n\n\n
    68. R. A. Roberts, J. Brouwer, E. Liese, and R. Gemmen, \u201cDynamic simulation of carbonate fuel cell-gas turbine hybrid systems,\u201d in Proceedings of the ASME Turbo Expo 2004<\/em>, 2004, vol. 7, doi: 10.1115\/gt2004-53653.<\/li>\n\n\n\n
    69. R. A. Roberts, J. Brouwer, and S. Samuelsen, \u201cDynamic simulation of fuel cell systems,\u201d in ACS National Meeting Book of Abstracts<\/em>, 2004, 1st ed., vol. 228.<\/li>\n\n\n\n
    70. R. A. Roberts, I. Tumer, R. Stone, and A. Brown, \u201cA function-based exploration of JPL’s problem\/failure reporting database,\u201d in American Society of Mechanical Engineers, Design Engineering Division (Publication) DE<\/em>, 2003, 1st ed., vol. 116, doi: 10.1115\/IMECE2003-42769.<\/li>\n\n\n\n
    71. R. A. Roberts, F. Jabbari, J. Brouwer, R. Gemmen, and E. Liese, \u201cInter-laboratory dynamic modeling of a carbonate fuel cell for hybrid application,\u201d in American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI<\/em>, 2003, vol. 2, doi: 10.1115\/GT2003-38774.<\/li>\n\n\n\n
    72. R. A. Roberts, R. Stone, and I. Tumer, \u201cDeriving function-failure similarity information for failure-free rotorcraft component design,\u201d in Proceedings of the ASME Design Engineering Technical Conference<\/em>, 2002, vol. 3, doi: 10.1115\/detc2002\/dfm-34166.<\/li>\n\n\n\n
    73. Tumer, R. Stone, and R. A. Roberts, \u201cTowards failure-free design: Reducing dimensionality in function-failure similarity analysis for large databases,\u201d in ASME International Mechanical Engineering Congress and Exposition, Proceedings<\/em>, 2002, doi: 10.1115\/IMECE2002-33473.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

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