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Proceedings Papers

Transient Analysis of an Innovative Cycle Integrating a SOFC and a Turbogenerator for Electric Propulsion

Venkata Adithya Chakravarthula, Rory A. Roberts
Proc. ASME. GT2017, Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration Applications; Organic Rankine Cycle Power Systems, V003T06A029, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64804
https://doi.org/10.1115/GT2017-64804
View Paper titled, Transient Analysis of an Innovative Cycle Integrating a SOFC and a Turbogenerator for Electric Propulsion
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Topics: Cycles, Electric propulsion, Solid oxide fuel cells, Transient analysis, Turbogenerators, Gas turbines, Combustion chambers, Design, Exergy, Thermodynamic power cycles
Proceedings Papers

Combined Cycle Engine Cascades Achieving High Efficiency

Andy Schroder, Mark G. Turner, Rory A. Roberts
Proc. ASME. GT2016, Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T06A021, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-58004
https://doi.org/10.1115/GT2016-58004
View Paper titled, Combined Cycle Engine Cascades Achieving High Efficiency
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Topics: Combined cycles, Engines, Fuel cells, Cycles, Combustion chambers, Fuels, Carbon dioxide, Cascades (Fluid dynamics), High pressure (Physics), Supercritical carbon dioxide
Proceedings Papers

Assessment of the Vehicle Level Impact for a SOFC Integrated With the Power and Thermal Management System of an Air Vehicle

Rory A. Roberts, Mitch Wolff, Sean Nuzum, Adam Donovan
Proc. ASME. DSCC2015, Volume 1: Adaptive and Intelligent Systems Control; Advances in Control Design Methods; Advances in Non-Linear and Optimal Control; Advances in Robotics; Advances in Wind Energy Systems; Aerospace Applications; Aerospace Power Optimization; Assistive Robotics; Automotive 2: Hybrid Electric Vehicles; Automotive 3: Internal Combustion Engines; Automotive Engine Control; Battery Management; Bio Engineering Applications; Biomed and Neural Systems; Connected Vehicles; Control of Robotic Systems, V001T08A004, October 28–30, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2015-9853
https://doi.org/10.1115/DSCC2015-9853
View Paper titled, Assessment of the Vehicle Level Impact for a SOFC Integrated With the Power and Thermal Management System of an Air Vehicle
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Topics: Solid oxide fuel cells, Thermal management, Vehicles, Aircraft, Electricity (Physics), Aerospace industry, Cycles, Electrical components, Electronics, Propulsion systems
Proceedings Papers

Dynamic Simulation of Energy Systems: Comparison of a Physics-Based Against Time Constant Based Approach Applied to a Microturbine Test Rig

Rory A. Roberts, I. Rossi, A. Traverso
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A008, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42651
https://doi.org/10.1115/GT2015-42651
View Paper titled, Dynamic Simulation of Energy Systems: Comparison of a Physics-Based Against Time Constant Based Approach Applied to a Microturbine Test Rig
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Topics: Energy / power systems, Microturbines, Physics, Simulation, Modeling, Computer software, Differential equations, Energy generation, Fuel cells, Gas turbines
Proceedings Papers

Aircraft Engine Electrical Power Generation With a SOFC Combustor

Rory A. Roberts, Peter Therkelsen
Proc. ASME. GT2014, Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration, V03AT07A032, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-27106
https://doi.org/10.1115/GT2014-27106
View Paper titled, Aircraft Engine Electrical Power Generation With a SOFC Combustor
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Topics: Aircraft engines, Combustion chambers, Electric power generation, Solid oxide fuel cells, Engines, Aircraft, Electricity (Physics), Fuel consumption, Fuels, Thrust
Journal Articles

Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System

Rory A. Roberts, Daniel D. Decker
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. July 2014, 136(4): 041003.
Paper No: DS-13-1075
https://doi.org/10.1115/1.4026412
Published Online: March 13, 2014
View Article titled, Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System
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Topics: Aircraft, Engines, Flow (Dynamics), Fuels, Heat, Heat exchangers, Temperature, Thermal management, Stress, Compressors
Proceedings Papers

Thrust Vectoring Design Project at Six Universities: Part I — Project Description and Final Designs

Mark G. Turner, Markus P. Rumpfkeil, James T. VanKuren, Rory A. Roberts, Jeffrey Bons, Tim Smith, Joseph K. Ausserer, Paul Litke
Proc. ASME. GT2013, Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers, V004T08A008, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95602
https://doi.org/10.1115/GT2013-95602
View Paper titled, Thrust Vectoring Design Project at Six Universities: Part I — Project Description and Final Designs
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Topics: Design, Thrust, Undergraduate students, Air Force, Students, Engineering teachers, Jet engines, Teams
Proceedings Papers

Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System

Rory A. Roberts, Daniel D. Decker
Proc. ASME. GT2013, Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers, V004T06A026, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95922
https://doi.org/10.1115/GT2013-95922
View Paper titled, Control Architecture Study Focused on Energy Savings of an Aircraft Thermal Management System
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Topics: Aircraft, Thermal management
Journal Articles

Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation

Rory A. Roberts, Jack Brouwer, G. Scott Samuelsen
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2010, 132(1): 012302.
https://doi.org/10.1115/1.2833489
Published Online: October 1, 2009
View Article titled, Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation
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Topics: Design, Flow (Dynamics), Fuel cells, Gas turbines, Solid oxide fuel cells, Stress, Temperature, Compressors, Control equipment, Energy generation
Proceedings Papers

Inter-Laboratory Dynamic Modeling of a Carbonate Fuel Cell for Hybrid Application

Rory A. Roberts, Faryar Jabbari, Jacob Brouwer, Randall S. Gemmen, Eric A. Liese
Proc. ASME. GT2003, Volume 2: Turbo Expo 2003, 565-572, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38774
https://doi.org/10.1115/GT2003-38774
View Paper titled, Inter-Laboratory Dynamic Modeling of a Carbonate Fuel Cell for Hybrid Application
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Topics: Dynamic modeling, Fuel cells, Dynamic response, Simulation, Gas turbines, Reliability, Computer software, Design, Dynamic models, Flow (Dynamics)
Proceedings Papers

Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems

Rory A. Roberts, Jack Brouwer, Eric Liese, Randall S. Gemmen
Proc. ASME. GT2004, Volume 7: Turbo Expo 2004, 389-397, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53653
https://doi.org/10.1115/GT2004-53653
View Paper titled, Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems
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Topics: Design, Dynamic analysis, Emissions, Flexible systems, Fossil fuels, Fuel cells, Fuels, Gas turbines, Molten carbonate fuel cells, Simulation
Proceedings Papers

Development of Controls for Dynamic Operation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems

Rory A. Roberts, Jack Brouwer, Eric Liese, Randall S. Gemmen
Proc. ASME. GT2005, Volume 5: Turbo Expo 2005, 325-331, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-68774
https://doi.org/10.1115/GT2005-68774
View Paper titled, Development of Controls for Dynamic Operation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems
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Topics: Fuels, Gas turbines, Molten carbonate fuel cells, Simulation, Turbines, Fuel cells, Emissions, Flow (Dynamics), Temperature, Compressors
Proceedings Papers

Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation

Rory A. Roberts, Jack Brouwer, G. Scott Samuelsen
Proc. ASME. GT2006, Volume 4: Cycle Innovations; Electric Power; Industrial and Cogeneration; Manufacturing Materials and Metallurgy, 247-255, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90741
https://doi.org/10.1115/GT2006-90741
View Paper titled, Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation
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Topics: Fuel cells, Gas turbines, Stress
Proceedings Papers

Deriving Function-Failure Similarity Information for Failure-Free Rotorcraft Component Design

Rory A. Roberts, Robert B. Stone, Irem Y. Tumer
Proc. ASME. IDETC-CIE2002, Volume 3: 7th Design for Manufacturing Conference, 121-131, September 29–October 2, 2002
Publisher: American Society of Mechanical Engineers
Paper No: DETC2002/DFM-34166
https://doi.org/10.1115/DETC2002/DFM-34166
View Paper titled, Deriving Function-Failure Similarity Information for Failure-Free Rotorcraft Component Design
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Topics: Design, Failure
Proceedings Papers

Towards Failure-Free Design: Reducing Dimensionality in Function-Failure Similarity Analysis for Large Databases

Irem Y. Tumer, Robert B. Stone, Rory A. Roberts
Proc. ASME. IMECE2002, Design Engineering, 631-638, November 17–22, 2002
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2002-33473
https://doi.org/10.1115/IMECE2002-33473
View Paper titled, Towards Failure-Free Design: Reducing Dimensionality in Function-Failure Similarity Analysis for Large Databases
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Topics: Databases, Design, Failure, Failure mechanisms, Accidents, Risk, Damage, Decision making, Failure data, Mathematics
Proceedings Papers

A Function-Based Exploration of JPL’s Problem/Failure Reporting Database

Rory A. Roberts, Irem Y. Tumer, Robert B. Stone, Arthur F. Brown
Proc. ASME. IMECE2003, Design Engineering, Volumes 1 and 2, 543-554, November 15–21, 2003
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2003-42769
https://doi.org/10.1115/IMECE2003-42769
View Paper titled, A Function-Based Exploration of JPL’s Problem/Failure Reporting Database
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Topics: Databases, Failure, Failure mechanisms
Journal Articles

Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems

Alberto Traverso, Aristide Massardo, Rory A. Roberts, Jack Brouwer, Scott Samuelsen
Journal: Journal of Electrochemical Energy Conversion and Storage
Publisher: ASME
Article Type: Technical Papers
J. Electrochem. En. Conv. Stor. November 2007, 4(4): 373–383.
https://doi.org/10.1115/1.2714567
Published Online: June 9, 2006
View Article titled, Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems
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Topics: Compressors, Design, Flow (Dynamics), Gas turbines, Microturbines, Pressure, Solid oxide fuel cells, Temperature, Turbines, Valves
Journal Articles

Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems

Rory A. Roberts, Jack Brouwer, Eric Liese, Randall S. Gemmen
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2006, 128(2): 294–301.
https://doi.org/10.1115/1.1852565
Published Online: April 3, 2006
View Article titled, Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems
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Topics: Fuel cells, Fuels, Gas turbines, Molten carbonate fuel cells, Temperature, Turbines, Flow (Dynamics), Stress, Simulation, Design