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Proceedings Papers

QCSEE — Design and Test Contributions to the Rise Open Fan Program

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Aspi Wadia, Jan Schilling, William Solomon, Gregory Steinmetz, Daniel Mollmann
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A021, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123719
https://doi.org/10.1115/GT2024-123719
View Paper titled, QCSEE — Design and Test Contributions to the Rise Open Fan Program
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Topics: Composite materials, Design, Mechanical drives, Turbofans, Engines, Blades, Gears, Pressure, Testing, Turbines
Proceedings Papers

Mitigation of Start-Up Coupled Lateral-Torsional Vibration of a Synchronous Motor Driven Integrally Geared Centrifugal Compressor

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Zhusan Luo, Carl L. Schwarz
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT26A014, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103162
https://doi.org/10.1115/GT2023-103162
View Paper titled, Mitigation of Start-Up Coupled Lateral-Torsional Vibration of a Synchronous Motor Driven Integrally Geared Centrifugal Compressor
Open the PDF for Mitigation of Start-Up Coupled Lateral-Torsional Vibration of a Synchronous Motor Driven Integrally Geared Centrifugal Compressor in another window
Topics: Compressors, Engines, Gears, Motors, Vibration
Proceedings Papers

Fluid Dynamic Loss Model With Wide Applicability for Aeroengine Transmission Gears

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Hidenori Arisawa, Mitsuaki Tanaka, Hironori Hashimoto, Tatsuhiko Goi, Takahiko Banno, Hirofumi Akahori
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A002, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100547
https://doi.org/10.1115/GT2023-100547
View Paper titled, Fluid Dynamic Loss Model With Wide Applicability for Aeroengine Transmission Gears
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Topics: Fluids, Gears, Design, Computer simulation, Flow (Dynamics), Fuel efficiency, Internal flow, Modeling, Numerical analysis, Vortices
Proceedings Papers

Computational Fluid Dynamics in a Fan-Drive Gear System of an Aeroengine

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Hironori Hashimoto, Hidenori Arisawa, Koki Kondo, Yuji Shinoda, Mitsuaki Tanaka, Hideyuki Imai, Isao Fujii, Takunobu Nishida
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A014, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101589
https://doi.org/10.1115/GT2023-101589
View Paper titled, Computational Fluid Dynamics in a Fan-Drive Gear System of an Aeroengine
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Topics: Computational fluid dynamics, Fluids, Gears, Planetary gears
Proceedings Papers

Applicability of Numerical Simulation to the Classification of Fluid Dynamic Loss in Aeroengine Transmission Gears

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Hidenori Arisawa, Mitsuaki Tanaka, Hironori Hashimoto, Tatsuhiko Goi, Takahiko Banno, Hideyuki Imai
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100546
https://doi.org/10.1115/GT2023-100546
View Paper titled, Applicability of Numerical Simulation to the Classification of Fluid Dynamic Loss in Aeroengine Transmission Gears
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Topics: Computer simulation, Fluids, Gears, Flow (Dynamics), Computational fluid dynamics, Two-phase flow, Accuracy and precision, Air flow, Compression, Computational methods
Proceedings Papers

Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2

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Jason Wilkes, Natalie R. Smith, Karl Wygant, Abhay Patil, Chris Kulhanek
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A023, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83262
https://doi.org/10.1115/GT2022-83262
View Paper titled, Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2
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Topics: Leakage, Pistons, Supercritical carbon dioxide, Thrust, Aerodynamics, Clearances (Engineering), Compressors, Computational fluid dynamics, Fluid-dynamic forces, Pressure
Proceedings Papers

Design and Testing of a 275 Bar 700 Degree Celsius Expander for an Integrally Geared Supercritical CO2 Compander

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Jason Wilkes, Kyle Robinson, Karl Wygant, Rob Pelton, Jonathan Bygrave
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A025, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83284
https://doi.org/10.1115/GT2022-83284
View Paper titled, Design and Testing of a 275 Bar 700 Degree Celsius Expander for an Integrally Geared Supercritical CO2 Compander
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Topics: Design, Supercritical carbon dioxide, Testing, Compressors, Concentrating solar power, Creep, Fatigue, Gears, High pressure (Physics), High temperature
Proceedings Papers

Select Trade-Offs in Parallel Hybrid Turboprop Cycle Design

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Michael Sielemann, Mavroudis D. Kavvalos, Nithish Selvan, Jim Claesson, Konstantinos Kyprianidis
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A014, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81629
https://doi.org/10.1115/GT2022-81629
View Paper titled, Select Trade-Offs in Parallel Hybrid Turboprop Cycle Design
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Topics: Cycles, Design, Tradeoffs, Gas turbines, Machinery, Aircraft, Electricity (Physics), Fuel consumption, Propellers, Turbines
Proceedings Papers

Experimental Determination of Heat Transfer Coefficient on Impingement Cooled Gear Flanks: Validation of the Evaluation Method

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Emre Ayan, Felix C. von Plehwe, Marc C. Keller, Christian Kromer, Corina Schwitzke, Hans-Jörg Bauer
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A004, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58838
https://doi.org/10.1115/GT2021-58838
View Paper titled, Experimental Determination of Heat Transfer Coefficient on Impingement Cooled Gear Flanks: Validation of the Evaluation Method
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Topics: Evaluation methods, Gears, Heat transfer coefficients, Heat transfer, Temperature, Thermocouples, Impingement cooling, Algorithms, Design, Gear teeth
Proceedings Papers

An Update on the Status of a Reduced Flow Test of a 10mw 700°C sCO2 Integrally Geared Compander

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Kelsi M. Katcher, Jason Wilkes, Tim C. Allison
Proc. ASME. GT2021, Volume 10: Supercritical CO2, V010T30A001, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-02604
https://doi.org/10.1115/GT2021-02604
View Paper titled, An Update on the Status of a Reduced Flow Test of a 10mw 700°C sCO2 Integrally Geared Compander
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Topics: Flow (Dynamics), Cycles, Design, Turbines, Compressors, Machinery, Supercritical carbon dioxide, Temperature, Testing, Thermodynamic power cycles
Proceedings Papers

Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling

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Thomas Lakner, Christoph Zachert, René Greschert, Daniel Schraknepper, Thomas Bergs
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A007, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59172
https://doi.org/10.1115/GT2021-59172
View Paper titled, Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling
Open the PDF for Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling in another window
Topics: Gears, Machining, Milling, Service life (Equipment), Turbofans, Wear
Proceedings Papers

Novel Cyclo-Non-Stationary Indicators for Monitoring of Rotating Machinery Operating Under Speed and Load Varying Conditions

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Alexandre Mauricio, Dustin Helm, Markus Timusk, Jerome Antoni, Konstantinos Gryllias
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T05A018, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15245
https://doi.org/10.1115/GT2020-15245
View Paper titled, Novel Cyclo-Non-Stationary Indicators for Monitoring of Rotating Machinery Operating Under Speed and Load Varying Conditions
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Topics: Machinery, Stress, Signals, Condition monitoring, Failure, Maintenance, Bearings, Damage, Density, Excitation
Proceedings Papers

Thermodynamic and Mechanical Design Concept for Micro-Turbojet to Micro-Turboshaft Engine Conversion

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Christoph Öttl, Reinhard Willinger
Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A005, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14498
https://doi.org/10.1115/GT2020-14498
View Paper titled, Thermodynamic and Mechanical Design Concept for Micro-Turbojet to Micro-Turboshaft Engine Conversion
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Topics: Design engineering, Engines, Turbojets, Design, Turbines, Blades, Computational fluid dynamics, Cycles, Dimensions, Gears
Proceedings Papers

Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines

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Soheil Jafari, Theoklis Nikolaidis, Albert S. J. van Heerden, Craig P. Lawson, David Bosak
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A021, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14637
https://doi.org/10.1115/GT2020-14637
View Paper titled, Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines
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Topics: Engines, Physics, Turbofans, Flight, Stress, Heat losses, Waste heat, Fuels, Aircraft engines, Emissions
Proceedings Papers

Analytical Model for the Heat Transfer in Impingement Cooled Spur Gears

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Christian Kromer, Felix C. von Plehwe, Marc C. Keller, Corina Schwitzke, Hans-Jörg Bauer
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A023, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14760
https://doi.org/10.1115/GT2020-14760
View Paper titled, Analytical Model for the Heat Transfer in Impingement Cooled Spur Gears
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Topics: Heat transfer, Spur gears, Gear teeth, Gear trains, Heat, Impingement cooling, Jet engines, Pressure, Turbines, Turbofans
Proceedings Papers

Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor

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Thomas Kerr, Adolfo Delgado, Dara Childs
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A013, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90488
https://doi.org/10.1115/GT2019-90488
View Paper titled, Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor
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Topics: Compressors, Stiffness, Thrust, Stress, Particle spin, Rotation, Spin (Aerodynamics), Deflection, Cables, Gears
Proceedings Papers

Diagnostics of Fatigue Crack in the Shaft Using Spectral Kurtosis

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Sagi Rathna Prasad, A. S. Sekhar
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A004, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90373
https://doi.org/10.1115/GT2019-90373
View Paper titled, Diagnostics of Fatigue Crack in the Shaft Using Spectral Kurtosis
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Topics: Fatigue cracks, Rotors, Stress, Vibration, Accelerometers, ASTM International, Bearings, Failure, Gears, Laser Doppler vibrometers
Proceedings Papers

Vibration Characteristics of Rotor System Considering Gear Meshing

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Jie Hong, XiRu Xu, LiMing Jiang, YanHong Ma
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT33A009, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91445
https://doi.org/10.1115/GT2019-91445
View Paper titled, Vibration Characteristics of Rotor System Considering Gear Meshing
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Topics: Displacement, Gears, Rotors, Vibration
Proceedings Papers

Investigation of Steam Turbine Warm-Keeping by Use of Air

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Dennis Toebben, Piotr Luczynski, Manfred Wirsum, Wolfgang F. D. Mohr, Klaus Helbig
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A017, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90761
https://doi.org/10.1115/GT2019-90761
View Paper titled, Investigation of Steam Turbine Warm-Keeping by Use of Air
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Topics: Steam turbines, Turbines, Blades, Temperature, Flow (Dynamics), Heat transfer, Power stations, Rotors, Steam, Boundary-value problems
Proceedings Papers

Commercialization and Fleet Experience of the 7/9HA Gas Turbine Combined Cycle

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Christian Vandervort, David Leach, David Walker, Jerry Sasser
Proc. ASME. GT2019, Volume 3: Coal, Biomass, Hydrogen, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T08A006, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91594
https://doi.org/10.1115/GT2019-91594
View Paper titled, Commercialization and Fleet Experience of the 7/9HA Gas Turbine Combined Cycle
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Topics: Combined cycles, Gas turbines, Stress, Industrial gases, Power stations, Turbines, Carbon, Combined cycle power stations, Emissions, Energy generation