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Proceedings Papers

Field Testing and Operation of a 300 kW Active Magnetic Bearing Supported Turboexpander-Generator for Natural Gas Pressure Letdown

Rasish Khatri, Larry Hawkins, Jeremy Liu, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A015, June 13–17, 2022
Paper No: GT2022-82332
DOI: https://doi.org/10.1115/GT2022-82332
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Topics: Bearings, Generators, Joules, Magnetic bearings, Natural gas, Pressure, Testing
Journal Articles

Design of a Compact Magnetically Levitated Blower for Space Applications

Larry Hawkins, Alexei Filatov, Rasish Khatri, Chris DellaCorte, S. Adam Howard
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2021, 143(9): 091012.
Paper No: GTP-21-1084
DOI: https://doi.org/10.1115/1.4050755
Published Online: May 13, 2021
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Topics: Bearings, Design, Engines, Magnetic bearings, Motors, Rotors, Stress, Impellers, Sensors, Simulation
Proceedings Papers

Design of a Compact Magnetically Levitated Blower for Space Applications

Larry Hawkins, Alexei Filatov, Rasish Khatri, Chris DellaCorte, S. Adam Howard
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A023, September 21–25, 2020
Paper No: GT2020-15090
DOI: https://doi.org/10.1115/GT2020-15090
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Topics: Design, Magnetic bearings, Bearings, Carbon dioxide, Sorbents, Actuators, Air bearings, Air flow, Ball bearings, Energy consumption
Proceedings Papers

Computational Cost Reduction of MIMO Controllers for Active Magnetic Bearing Systems

Alican Sahinkaya, Larry Hawkins, Jerzy T. Sawicki
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A017, September 21–25, 2020
Paper No: GT2020-15241
DOI: https://doi.org/10.1115/GT2020-15241
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Topics: Control equipment, Magnetic bearings, Dynamic response, Dynamics (Mechanics), Hardware, Machining, Modal assurance criterion, Permanent magnets, Turbogenerators
Journal Articles

Computational Cost Reduction of MIMO Controllers for Active Magnetic Bearing Systems

Alican Sahinkaya, Larry Hawkins, Jerzy T. Sawicki
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2020, 142(11): 111002.
Paper No: GTP-20-1567
DOI: https://doi.org/10.1115/1.4048486
Published Online: October 15, 2020
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Topics: Control equipment
Proceedings Papers

Design and Prototype Test Data for a 300 kW AMB-Supported Turbine Generator for Natural Gas Pressure Letdown

Rasish Khatri, Larry Hawkins, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A030, June 17–21, 2019
Paper No: GT2019-91172
DOI: https://doi.org/10.1115/GT2019-91172
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Topics: Design, Engineering prototypes, Natural gas, Pressure, Turbogenerators, Bearings, Magnetic bearings, Generators, Dynamics (Mechanics), Machinery
Proceedings Papers

Development of a 350kW Marine Organic Rankine Power Module for Ship Waste Steam

Chris Sellers, Larry Hawkins
Proc. ASME. GT2017, Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration Applications; Organic Rankine Cycle Power Systems, V003T28A001, June 26–30, 2017
Paper No: GT2017-63026
DOI: https://doi.org/10.1115/GT2017-63026
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Topics: Ships, Steam, Turbines, Cooling, Fuels, Organic Rankine cycle, Refrigerants, Rotors, Fluids, Magnetic bearings
Journal Articles

Experimental Results for Labyrinth Gas Seals With Honeycomb Stators: Comparisons to Smooth-Stator Seals and Theoretical Predictions

Larry Hawkins, Dara Childs, Keith Hale
Journal: Journal of Tribology
Article Type: Research Papers
J. Tribol. January 1989, 111(1): 161–168.
DOI: https://doi.org/10.1115/1.3261867
Published Online: January 1, 1989
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Topics: Honeycomb structures, Stators, Rotors, Clearances (Engineering), Damping, Stiffness, Compressible flow, Pressure, Stability