Publications

Published Articles

  1. Butt, N., Roberts, R. A., Patnaik, S., “Laser Diode Optical Output Dependence on Junction Temperature for High-Power Laser Systems”, Optics and Laser Technology, 125, 106019, (2020)
  2. Butt, N., Roberts, R. A., Patnaik, S., “Transient Temperature Effects on the Optical Power Wavelength Shift of a High-Power Laser System”, Applied Thermal Engineering, 156, 531-540, (2019)
  3. Turner, M.G. , Roberts, R.A., et al.,”Thrust Vectoring Design Project at Six Universities ” International Journal of Engineering Education”, 32, 1 (A) 252-271 (2016)
  4. Roberts, R. A., Doty, J., “Implementation of a Transient Exergy Analysis for a Plate Fin Heat Exchanger” International Journal of Exergy, 16, 109-126, (2015)
  5. Roberts, R. A., Eastbourn, S., “Modeling Techniques for a Computational Efficient Dynamic Turbofan Engine Model” International Journal of Aerospace Engineering, 2014, (2014)
  6. Roberts, R. A., Decker, D. D. “Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System ” Journal of Dynamic Systems, Measurement and Control, 136, 41003, (2014).
  7. Roberts, R. A., Eastbourn, S., “Vehicle-Level Tip-to-Tail Modeling of an Aircraft.” International Journal of Thermodynamics, 17, 107-115 (2014)
  8. Roberts, R. A., J. Brouwer, et al. “Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation.” Journal of Engineering for Gas Turbines and Power, 132, 21-27, (2010)
  9. Traverso, A., R. A. Roberts, et al. “Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems.” Journal of Fuel Cell Science and Technology. 4, 373 (2007)
  10. Mueller, F., R. A. Roberts, et al. ” Control Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System.” Journal of Fuel Cell Science and Technology. 4, 221 (2007)
  11. Roberts, R. A., J. Brouwer, et al. “Control Design of an Atmospheric Solid Oxide Fuel Cell/Gas Turbine Hybrid System: Variable Versus Fixed Speed Gas Turbine Operation.” Journal of Power Sources, 161, 484–491, (2006)
  12. Roberts, R. A., 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. 3, 18 (2006)
  13. Roberts, R. A., J. Brouwer, et al. “Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems.” Journal of Engineering for Gas Turbines and Power, 128, 294 (2006)
  14. Roberts, R. A., Hemmati, M. “Wave Profile for Antiforce Class II Waves.” Journal of the Arkansas Academy of Science. 54, 109 (2000)

Conference Papers

  1. Nathaniel Payne, Mitch Wolff, Rory Roberts, Levi Elston and Jarrod McCoppin. “Experimental Validation of a Combined Thermal Management and Power Generation System using a Multi-Mode Rankine Cycle”, 2020 AIAA Propulsion and Energy Forum and Exposition, Virtual.
  2. Chandoke, A, Deppen, T., Jackson, G., Roberts, R.A., Semega, K.”A Conceptual Design and Optimization Tool for Integration of Propulsion, Power, Thermal and Controls”, 2019 JANAF Propulsion Meeting, Dayton, OH
  3. Nathan J. Butt, Mitch Wolff, Rory A. Roberts, and Scott Thomas. “A Cryogenic Palletized High Energy Pulse System”, 2018 International Energy Conversion Engineering Conference, AIAA Propulsion and Energy Forum, (AIAA 2018-4487)
  4. Nathan J. Butt, Mitch Wolff, Rory A. Roberts, and Soumya Patnaik. “Transient Temperature Effects on a High Energy Pulse System Model”, 2018 International Energy Conversion Engineering Conference, AIAA Propulsion and Energy Forum, (AIAA 2018-4489)
  5. DeSomma, A., Roberts, R. A., Wolff, M., Behbahani, A. R.,(2018). “Power/Thermal Interaction within an Adaptive Turbine Engine” 2018 AIAA SciTech Forum and Exposition, Kissimmee, FL.
  6. McGillivray, N., Roberts, R. A., Wolff, M., (2017).”CFD Analysis and Optimization of a Simplified Scramjet Engine Model” 2017 AIAA Propulsion and Energy Forum and Exposition, Atlanta, GA.
  7. Chakravarthula, V., Roberts, R. A., Wolff, M., (2017). “Transient Analysis of and Innovative Cycle Integrating a SOFC and a Turbogenerator for Electric Propulsion ” 2017 ASME Turbo Expo, Charlotte, NC, USA
  8. Buettner, R., Roberts, R. A., Wolff, M., Behbahani, A. R.,(2017). “Design of a Transient Variable Cycle Turbine Engine Model for System Integration with Controls” 2017 AIAA SciTech Forum and Exposition, Grapevine, TX.
  9. Behbahani, A. R., Roberts, R. A., Chandoke, A. K., (2016).”Intelligent Nodal-Based Controls Technologies for Integrated Propulsion Energy/Power/Thermal Management Systems” 2016 AIAA Propulsion and Energy Forum and Exposition, Salt Lake City, UT.
  10. Chakravarthula, V., Roberts, R. A., Wolff, M., (2016).”Dynamic Model of Solid Oxide Fuel Cell Integrated with Fan and Exhaust Nozzle” 2016 AIAA Propulsion and Energy Forum and Exposition, Salt Lake City, UT.
  11. Buettner, R., Roberts, R. A., Wolff, M., (2016).”Dynamic Modeling of a Mixed-Flow Afterburning Turbofan Using MATLAB/Simulink” 2016 AIAA Propulsion and Energy Forum and Exposition, Salt Lake City, UT.
  12. Bracey, M., Nuzum, S., Roberts, R. A., Wolff, M., Zumberge, J., (2016).”Air Cycle Machine Transient Modeling with Exergy Analysis” 2016 AIAA Propulsion and Energy Forum and Exposition, Salt Lake City, UT.
  13. Donovan, A. B., Bracey, M., Roberts, R. A., Wolff, M. (2016).”Enhanced ECS/Generator Models in an Integrated Air Vehicle Platform” 2016 AIAA Propulsion and Energy Forum and Exposition, Salt Lake City, UT.
  14. Donovan, A. B., Nuzum, S. R., Roberts, R. A., Wolff, M.., (2016).”A Cryogenic Based Aviation Thermal Management System” 2016 AIAA Aviation Conference, Washington D.C.
  15. Schroder, A., Turner, M. G., Roberts, R. A., (2016). “Combined Cycle Engine Cascades Achieving High Efficiency” 2016 ASME Turbo Expo, Seoul, South Korea
  16. Roberts, R. A., Nuzum, S. R., Donovan, A. B., Wolff, M. (2016). “Impact of High Energy Pulsed Systems on an Aircraft’s Power and Thermal Management System” 2016 AIAA SciTech Forum and Exposition, San Diego, CA.
  17. Nuzum, S. R., Donovan, A. B., Roberts, R. A., Wolff, M. (2016). “An Aerospace Vehicle Model Including a Cryogenic Thermal Subsystem” 2016 AIAA SciTech Forum and Exposition, San Diego, CA.
  18. Roberts, R. A., Nuzum, S. R., Donovan, A. B., Wolff, M. (2015). “Assessment of the Vehicle Level Impact for a SOFC Integrated with the Power and Thermal Management System of an Air Vehicle” 2015 ASME DSCC, Columbus, OH.
  19. Roberts, R. A., Nuzum, S. R., Wolff, M. (2015).”Liquid Natural Gas as the Next Aviation Fuel” 2015 AIAA Propulsion and Energy Forum and Exposition, Orlando, FL.
  20. Nuzum, S. R., Roberts, R. A., Wolff, M. (2015).”Various Integrated Aerospace Systems utilizing a Cryogenic Fluid” 2015 AIAA Propulsion and Energy Forum and Exposition, Orlando, FL.
  21. Donovan, A. B., Roberts, R. A., Wolff, M. (2015).”Fuel Pump Trade Study for a Conceptual Design of an Integrated Air Vehicle System” 2015 AIAA Propulsion and Energy Forum and Exposition, Orlando, FL.
  22. Roberts, R. A., Rossi, I, Traverso, A., (2015). “Dynamic Simulation of Energy Systems: Comparison of a Physics-Based Against a Time ” 2015 ASME Turbo Expo, Montreal, Canada.
  23. Nuzum, S. R., Roberts, R. A., Wolff, M. (2015).”Feasibility Study of a Liquefied Natural Gas Powered Directed Energy Weapon” AIAA-Region III Student Conference, Dayton, OH.
  24. Donovan, A. B., Roberts, R. A., Wolff, M. (2015).”Performance Optimization of an Aircraft with a Vehicle Level Tip-to-Tail Model” AIAA-Region III Student Conference, Dayton, OH.
  25. Roberts, R. A., Therkelsen, P. (2014).”Aircraft Engine Electrical Power Generation with a SOFC Combustor ” 2014 ASME Turbo Expo, Düsseldorf, Germany.
  26. Roberts, R. A., Decker, D. D. (2013).”Energy Optimization of an Aircraft Focused on Component Sizing and Control Architecture Interactions ” 2013 AIAA Joint Propulsion Conference, San Jose, CA.
  27. Roberts, R. A., Decker, D. D. (2013).”Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System ” 2013 ASME Turbo Expo, San Antonio, TX.
  28. Turner, M.G., Rumpfkeil, M.P., Vankuren, J.T., Roberts, R. A., Bons, J., Smith, T. Ausserer, J.K., Litke, P. (2013).”Thrust Vectoring Design Project at Six Universities (Part I): Project Description and Final Designs” 2013 ASME Turbo Expo, San Antonio, TX. (Awarded Best Paper)
  29. Turner, M.G., Rumpfkeil, M.P., Vankuren, J.T., Roberts, R. A., Bons, J., Smith, T. Ausserer, J.K., Litke, P. (2013).”Thrust Vectoring Design Project at Six Universities (Part II): Impact on Student Learning and Lessons Learned” 2013 ASME Turbo Expo, San Antonio, TX.
  30. Roberts, R. A., Doty, J. H. (2012). “Implementation of a Non-Equilibrium Exergy Analysis for an Aircraft Thermal Management System” 2012 Aerospace Science Meeting, Nashville, TN.
  31. Roberts, R. A., Eastbourn, S, et al. (2011). “Generic Aircraft Thermal Tip-to-Tail Modeling and Simulation” 2011 AIAA Joint Propulsion Conference, San Diego, CA.
  32. Eastbourn, S., Roberts, R. A., et al. (2011). “Modeling and Simulation of a Dynamic Turbofan Engine Using Simulink” 2011 AIAA Joint Propulsion Conference, San Diego, CA.
  33. Roberts, R. A., J. Brouwer, et al. (2006). “Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation.” 2006 ASME Turbo Expo , Barcelona, Spain.
  34. Roberts, R. A., J. Brouwer, et al. (2005). “Development of Controls for Dynamic Operation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems.” 2005 ASME Turbo Expo , Reno-Tahoe, NV.
  35. Roberts, R. A., J. Brouwer, et al. (2004). “Dynamic Simulation of Fuel Cell Systems”, Am. Chem. Soc., Div. Fuel Chem. 49 (2)
  36. Roberts, R. A., J. Brouwer, et al. (2004). “Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems.” 2004 ASME Turbo Expo, Vienna, Austria.
  37. Roberts, R. A., J. Brouwer, et al. (2004). “Dynamic Simulation of a Solid Oxide Fuel Cell/Gas Turbine Hybrid”, 2004 Fuel Cell Seminar, Palm Springs, CA
  38. Roberts, R. A., J. Brouwer, et al. (2003). “Inter-Laboratory Dynamic Modeling of a Carbonate Fuel Cell for Hybrid Application.” 2003 ASME Turbo Expo, Atlanta, GA.
  39. Roberts, R. A., R. B. Stone, et al. (2003). “A Function-Based Exploration of JPL’s Problem and Failure Reporting Database.” ASME International Mechanical Engineering Congress and Exposition, Washington, D.C.
  40. Roberts, R. A., R. B. Stone, et al. (2002). “Deriving Function-Failure Similarity Information for Failure-Free Rotorcraft Component Design”. ASME Design Engineering Technical Conferences, Montreal, Canada.
  41. Tumer, I. Y., Stone, R. B., Roberts, R. A., (2002). “Towards Failure-Free Design: Reducing Dimensionality in Function-Failure Similarity Analysis for Large Databases.” International Mechanical Engineering Congress, New Orleans, LA.