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Proceedings Papers

LES Modeling of High-Lift High-Work LPT Blades: Part II—Validation and Application

Jared Kerestes, Christopher Marks, John Clark, Mitch Wolff, Ron-Ho Ni, Nathan Fletcher
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A009, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101950
https://doi.org/10.1115/GT2023-101950
View Paper titled, LES Modeling of High-Lift High-Work LPT Blades: Part II—Validation and Application
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Topics: Blades, Modeling, Design, Computational fluid dynamics, Reynolds-averaged Navier–Stokes equations, Turbines, Separation (Technology), Bubbles, Cascades (Fluid dynamics), Engineering simulation
Proceedings Papers

Turboprop Engine Loading During High and Low Maneuver Intensity Flight Mode

Ioannis Templalexis, Lambros Giachalis, Ioannis Lionis
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T06A017, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59668
https://doi.org/10.1115/GT2021-59668
View Paper titled, Turboprop Engine Loading During High and Low Maneuver Intensity Flight Mode
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Topics: Creep, Engines, Flight, Gas turbines, Aircraft, Air Force, Aircraft engines, Computer software, Cycles, Failure mechanisms
Proceedings Papers

Phantom Cooling Effects on Rotor Blade Surface Heat Flux in a Transonic Full Scale 1+1/2 Stage Rotating Turbine

Richard J. Anthony, John Finnegan, John P. Clark
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT13A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15836
https://doi.org/10.1115/GT2020-15836
View Paper titled, Phantom Cooling Effects on Rotor Blade Surface Heat Flux in a Transonic Full Scale 1+1/2 Stage Rotating Turbine
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Topics: Blades, Heat flux, Phantom cooling, Rotors, Turbines, Film cooling, High pressure (Physics), Pressure, Air Force, Leakage flows
Proceedings Papers

Confidence Bound Estimation for Mechanism-Based Small Crack Growth Probabilistic Design Life Predictions

Patrick J. Golden, Sushant K. Jha, James M. Larsen
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A018, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91860
https://doi.org/10.1115/GT2019-91860
View Paper titled, Confidence Bound Estimation for Mechanism-Based Small Crack Growth Probabilistic Design Life Predictions
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Topics: Design, Fracture (Materials), Gas turbines, Air Force, Fatigue, Fatigue cracks, Fatigue life, Fatigue testing, Fractography, Nucleation (Physics)
Proceedings Papers

3D Heat Transfer Assessment of Full-Scale Inlet Vanes With Surface-Optimized Film Cooling: Part 1 — Experimental Results

R. J. Anthony, J. P. Clark, J. Finnegan, J. J. Johnson
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT19A027, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91919
https://doi.org/10.1115/GT2019-91919
View Paper titled, 3D Heat Transfer Assessment of Full-Scale Inlet Vanes With Surface-Optimized Film Cooling: Part 1 — Experimental Results
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Topics: Film cooling, Heat transfer, Heat flux, Cooling, Design, Hardware, Pressure, Turbines, Air Force, Airfoils
Proceedings Papers

Ultra-High Temperature Compliant Foil Bearings: The Journey to 870°C and Application in Gas Turbine Engines — Experiment

Hooshang Heshmat, James F. Walton, II, Brian D. Nicholson
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A016, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75555
https://doi.org/10.1115/GT2018-75555
View Paper titled, Ultra-High Temperature Compliant Foil Bearings: The Journey to 870°C and Application in Gas Turbine Engines — Experiment
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Topics: Foil bearings, Gas turbines, Temperature, Bearings, Ceramics, High temperature, Testing, Turbochargers, Air Force, Automotive engines
Proceedings Papers

Computational Aid to AEDsys for Designing a Variable-Area Gas Turbine Nozzle

Devin O. O’Dowd, Aaron R. Byerley
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T07A005, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-77173
https://doi.org/10.1115/GT2018-77173
View Paper titled, Computational Aid to AEDsys for Designing a Variable-Area Gas Turbine Nozzle
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Topics: Design, Gas turbines, Nozzles, Computer software, Aircraft engines, Air Force, Engine design, Feedback, Flight, Geometry
Proceedings Papers

Heat Generation in a Main-Shaft Turbine Aero-Engine Bearing Considering Metal and Ceramic Rolling Elements

Brian D. Nicholson, Jeremy T. Nickell
Proc. ASME. GT2018, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A018, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75851
https://doi.org/10.1115/GT2018-75851
View Paper titled, Heat Generation in a Main-Shaft Turbine Aero-Engine Bearing Considering Metal and Ceramic Rolling Elements
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Topics: Aircraft engines, Bearings, Ceramics, Heat, Metals, Turbines, Lubricants, Flow (Dynamics), Stress, Temperature
Proceedings Papers

Performance Simulation and Analysis of a Gas Turbine Engine Using Drop-In Bio-Fuels

J. S. Rubie, Y. G. Li, A. J. B. Jackson
Proc. ASME. GT2018, Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T06A005, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75751
https://doi.org/10.1115/GT2018-75751
View Paper titled, Performance Simulation and Analysis of a Gas Turbine Engine Using Drop-In Bio-Fuels
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Topics: Biofuel, Gas turbines, Simulation, Fuels, Engines, Air Force, Aircraft, ASTM International, Aviation, Computer software
Proceedings Papers

Exploring GasTurb 12 for Supplementary Use on an Introductory Propulsion Design Project

Aaron R. Byerley, Kurt P. Rouser, Devin O. O’Dowd
Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T07A001, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63465
https://doi.org/10.1115/GT2017-63465
View Paper titled, Exploring GasTurb 12 for Supplementary Use on an Introductory Propulsion Design Project
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Topics: Design, Propulsion, Engines, Cycles, Students, Aerospace engineering, Air Force, Aircraft, Temperature, Thrust
Proceedings Papers

Rotordynamics Performance of Hybrid Foil Bearing Under Forced Vibration Input

Daejong Kim, Brian Nicholson, Lewis Rosado, Garry Givan
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A035, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65233
https://doi.org/10.1115/GT2017-65233
View Paper titled, Rotordynamics Performance of Hybrid Foil Bearing Under Forced Vibration Input
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Topics: Foil bearings, Rotordynamics, Vibration, Bearings, Stress, Impulse (Physics), Rotors, Excitation, Air Force, Aircraft engines
Proceedings Papers

Oral Assessments of Student Learning in Undergraduate Aerospace Propulsion and Power Courses

Kurt P. Rouser
Proc. ASME. GT2017, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T07A002, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64082
https://doi.org/10.1115/GT2017-64082
View Paper titled, Oral Assessments of Student Learning in Undergraduate Aerospace Propulsion and Power Courses
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Topics: Aerospace industry, Propulsion, Students, Undergraduate students, Teaching, Air Force, Design, Decision making, Feedback, Performance
Proceedings Papers

A Water Lubricated Hybrid Thrust Bearing: Measurements and Predictions of Static Load Performance

Luis San Andrés, Stephen Phillips, Dara Childs
Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT31A010, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56349
https://doi.org/10.1115/GT2016-56349
View Paper titled, A Water Lubricated Hybrid Thrust Bearing: Measurements and Predictions of Static Load Performance
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Topics: Stress, Thrust bearings, Water, Bearings, Flow (Dynamics), Pressure, Rotors, Clearances (Engineering), Thrust, Engines
Proceedings Papers

Numerical and Experimental Results From a Common-Source High-G Ultra-Compact Combustor

Andrew E. Cottle, Marc D. Polanka
Proc. ASME. GT2016, Volume 4A: Combustion, Fuels and Emissions, V04AT04A013, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56215
https://doi.org/10.1115/GT2016-56215
View Paper titled, Numerical and Experimental Results From a Common-Source High-G Ultra-Compact Combustor
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Topics: Combustion chambers, Cavities, Flow (Dynamics), Combustion, Compressors, Computational fluid dynamics, Diffusers, Jets, Air Force, Aircraft
Proceedings Papers

Investigation of Air Injection and Cavity Size Within a Circumferential Combustor to Increase G-Load and Residence Time

Andrew E. Cottle, Marc D. Polanka, Larry P. Goss, Corey Z. Goss
Proc. ASME. GT2016, Volume 4A: Combustion, Fuels and Emissions, V04AT04A014, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56216
https://doi.org/10.1115/GT2016-56216
View Paper titled, Investigation of Air Injection and Cavity Size Within a Circumferential Combustor to Increase G-Load and Residence Time
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Topics: Cavities, Combustion chambers, Stress, Combustion, Flow (Dynamics), Fuels, Air flow, Computational fluid dynamics, Air Force, Flames
Proceedings Papers

Unmanned Air Vehicle Interdisciplinary Design Project

Ioannis Templalexis, Theodore Lekas, Agelos Koutsomichalis, Anestis Kalfas
Proc. ASME. GT2016, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T07A004, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56225
https://doi.org/10.1115/GT2016-56225
View Paper titled, Unmanned Air Vehicle Interdisciplinary Design Project
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Topics: Design, Unmanned aerial vehicles, Aircraft, Teams, Military systems, Propulsion systems, Air Force, Maintenance, Materials science, Mechanical engineering
Proceedings Papers

Multi-Angular Flame Measurements and Analysis in a Supersonic Wind Tunnel Using Fiber Based Endoscopes

Lin Ma, Andrew J. Wickersham, Wenjiang Xu, Scott J. Peltier, Timothy M. Ombrello, Campbell D. Carter
Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T05A026, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43735
https://doi.org/10.1115/GT2015-43735
View Paper titled, Multi-Angular Flame Measurements and Analysis in a Supersonic Wind Tunnel Using Fiber Based Endoscopes
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Topics: Endoscopes, Fibers, Flames, Wind tunnels, Propulsion systems, Flow (Dynamics), Imaging, Thermal management, Air Force, Chemiluminescence
Proceedings Papers

Oxide/Oxide Ceramic Matrix Composite (CMC) Exhaust Mixer Development in the NASA Environmentally Responsible Aviation (ERA) Project

J. Douglas Kiser, Narottam P. Bansal, James Szelagowski, Jagdish (Jack) Sokhey, Tab Heffernan, Joseph Clegg, Anthony Pierluissi, Jim Riedell, Travis Wyen, Steven Atmur, Joseph Ursic
Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T02A002, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43593
https://doi.org/10.1115/GT2015-43593
View Paper titled, Oxide/Oxide Ceramic Matrix Composite (CMC) Exhaust Mixer Development in the NASA Environmentally Responsible Aviation (ERA) Project
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Topics: Aviation, Ceramic matrix composites, Composite materials, Exhaust systems, NASA, Oxide ceramics, Design, Engines, Testing, Air Force
Proceedings Papers

Influence of Fuel Characteristics in a Correlation to Predict Lean Blowout of Bluff-Body Stabilized Flames

Bethany C. Huelskamp, Barry V. Kiel, Ponnuthurai Gokulakrishnan
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A031, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43433
https://doi.org/10.1115/GT2015-43433
View Paper titled, Influence of Fuel Characteristics in a Correlation to Predict Lean Blowout of Bluff-Body Stabilized Flames
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Topics: Flames, Fuels, Ignition delay, Jet fuels, Pressure, Temperature, Air Force, Carbon, Chemical kinetics, Fluids
Proceedings Papers

Air Force Academy Contributions to Development of the A-10 Drooped Leading Edge Modification

Thomas R. Yechout, Austin Buscher, Steven Trochlil, Jordan Rozsa, Lillian Pryor, Jerome C. Jenkins
Proc. ASME. GT2015, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A039, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-44159
https://doi.org/10.1115/GT2015-44159
View Paper titled, Air Force Academy Contributions to Development of the A-10 Drooped Leading Edge Modification
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Topics: Air Force, Aeronautics, Aircraft, Drag (Fluid dynamics), Drag reduction, Maintainability, Pressure, Reliability, Springs, Wind tunnels