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Journal Articles

Design Exploration and Performance Assessment of Advanced Recuperated Hybrid-Electric Urban Air Mobility Rotorcraft

Chana Anna Saias, Ioannis Roumeliotis, Ioannis Goulos, Vassilios Pachidis, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031023.
Paper No: GTP-21-1262
DOI: https://doi.org/10.1115/1.4052955
Published Online: January 4, 2022
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Topics: Cycles, Design, Emissions, Engines, Fuels, Heat exchangers, Power stations, Rotors, Weight (Mass), Cities
Journal Articles

Preliminary Design of Hybrid-Electric Propulsion Systems for Emerging Urban Air Mobility Rotorcraft Architectures

Chana Anna Saias, Ioannis Goulos, Ioannis Roumeliotis, Vassilios Pachidis, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111015.
Paper No: GTP-21-1162
DOI: https://doi.org/10.1115/1.4052057
Published Online: October 4, 2021
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Topics: Batteries, Design, Propulsion systems, Rotors, Weight (Mass), Gas turbines, Power stations, Fuels, Flight, Engines
Journal Articles

Optimal Control of a Compound Rotorcraft for Engine Performance Enhancement

Calum Scullion, Stavros Vouros, Ioannis Goulos, Devaiah Nalianda, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2021, 143(2): 021005.
Paper No: GTP-20-1438
DOI: https://doi.org/10.1115/1.4049163
Published Online: January 13, 2021
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Topics: Design, Engines, Flight, Flow (Dynamics), Fuels, Optimization, Propellers, Rotors, Optimal control, Weight (Mass)
Proceedings Papers

Optimal Control of a Compound Rotorcraft for Engine Performance Enhancement

Calum Scullion, Stavros Vouros, Ioannis Goulos, Devaiah Nalianda, Vassilios Pachidis
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A045, September 21–25, 2020
Paper No: GT2020-16280
DOI: https://doi.org/10.1115/GT2020-16280
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Topics: Design, Engines, Optimal control, Rotors, Flight, Fuels, Aerodynamics, Aerospace industry, Combustion chambers, Control systems
Journal Articles

Impact of Adverse Environmental Conditions on Rotorcraft Operational Performance and Pollutant Emissions

Jesus Ortiz-Carretero, Alejandro Castillo Pardo, Ioannis Goulos, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2018, 140(2): 021201.
Paper No: GTP-17-1313
DOI: https://doi.org/10.1115/1.4037751
Published Online: October 3, 2017
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Topics: Emissions, Engines, Flight, Flow (Dynamics), Fuels, Nitrogen oxides, Temperature, Aerodynamics, Pollution, Simulation
Proceedings Papers

Assessment of the Effect of Environmental Conditions on Rotorcraft Pollutant Emissions at Mission Level

Jesus Ortiz-Carretero, Alejandro Castillo Pardo, Vassilios Pachidis, Ioannis Goulos
Proc. ASME. GT2017, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A010, June 26–30, 2017
Paper No: GT2017-63440
DOI: https://doi.org/10.1115/GT2017-63440
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Topics: Emissions, Pollution, Engines, Fuels, Nitrogen oxides, Aerodynamics, Biomedicine, Commercial air transport, Compressors, Computer software
Journal Articles

Techno-Economic Assessment of Gas Turbine Cogeneration Cycles Utilizing Anaerobic Digestion Products for Biogas Fuel

Georgios Kontokostas, Ioannis Goulos
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2017, 139(1): 011401.
Paper No: GTP-16-1221
DOI: https://doi.org/10.1115/1.4034156
Published Online: August 16, 2016
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Topics: Biogas, Combined heat and power, Cycles, Fuels, Gas turbines, Power stations, Flow (Dynamics), Temperature, Combustion chambers, Exergy analysis
Journal Articles

Aerodynamic Design of Separate-Jet Exhausts for Future Civil Aero-engines—Part I: Parametric Geometry Definition and Computational Fluid Dynamics Approach

Ioannis Goulos, Tomasz Stankowski, John Otter, David MacManus, Nicholas Grech, Christopher Sheaf
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2016, 138(8): 081201.
Paper No: GTP-15-1538
DOI: https://doi.org/10.1115/1.4032649
Published Online: March 15, 2016
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Topics: Computational fluid dynamics, Design, Engines, Exhaust systems, Flow (Dynamics), Geometry, Nozzles, Aircraft engines
Journal Articles

Aerodynamic Design of Separate-Jet Exhausts for Future Civil Aero-engines—Part II: Design Space Exploration, Surrogate Modeling, and Optimization

Ioannis Goulos, John Otter, Tomasz Stankowski, David MacManus, Nicholas Grech, Christopher Sheaf
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2016, 138(8): 081202.
Paper No: GTP-15-1539
DOI: https://doi.org/10.1115/1.4032652
Published Online: March 15, 2016
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Topics: Design, Engines, Exhaust systems, Optimization, Nozzles
Journal Articles

Generalized Aerodynamic Modeling of Dynamic Wake Curvature for Open Rotors With Slender Blades

Ioannis Goulos
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. June 2016, 138(6): 061001.
Paper No: TURBO-14-1293
DOI: https://doi.org/10.1115/1.4032359
Published Online: February 9, 2016
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Topics: Blades, Rotors, Wakes, Inflow, Flow (Dynamics), Vortices, Disks, Modeling
Journal Articles

A Preliminary Design Tradeoff Study for an Advanced Propulsion Technology Rotorcraft at Mission Level

Fakhre Ali, Ioannis Goulos, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2016, 138(1): 012602.
Paper No: GTP-15-1302
DOI: https://doi.org/10.1115/1.4031204
Published Online: August 25, 2015
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Topics: Engines, Simulation, Weight (Mass), Fuels, Design, Propulsion, Tradeoffs, Gas turbines, Flight
Proceedings Papers

Multi-Objective Optimization of a Regenerative Rotorcraft Powerplant: Quantification of Fuel Economy and Environmental Impact

Fakhre Ali, Konstantinos Tzanidakis, Ioannis Goulos, Vassilios Pachidis, Roberto d’Ippolito
Proc. ASME. GT2015, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A035, June 15–19, 2015
Paper No: GT2015-44001
DOI: https://doi.org/10.1115/GT2015-44001
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Topics: Corporate average fuel economy, Fuel efficiency, Pareto optimization, Power stations, Engines, Design, Pressure, Compressors, Emissions, Engine design
Proceedings Papers

Design Space Exploration and Optimization of Conceptual Rotorcraft Powerplants

Fakhre Ali, Konstantinos Tzanidakis, Ioannis Goulos, Vassilios Pachidis, Roberto d’Ippolito
Proc. ASME. GT2015, Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration, V003T06A025, June 15–19, 2015
Paper No: GT2015-44003
DOI: https://doi.org/10.1115/GT2015-44003
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Topics: Design, Optimization, Power stations, Engines, Emissions, Engine design, Gas turbines, Weight (Mass), Aerodynamics, Corporate average fuel economy
Journal Articles

Design Space Exploration and Optimization of Conceptual Rotorcraft Powerplants

Fakhre Ali, Konstantinos Tzanidakis, Ioannis Goulos, Vassilios Pachidis, Roberto d'Ippolito
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2015, 137(12): 121701.
Paper No: GTP-15-1264
DOI: https://doi.org/10.1115/1.4031113
Published Online: August 4, 2015
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Topics: Design, Engines, Optimization, Weight (Mass), Fuels, Engine design, Nitrogen oxides
Journal Articles

Multi-objective Optimization of Conceptual Rotorcraft Powerplants: Trade-off Between Rotorcraft Fuel Efficiency and Environmental Impact

Fakhre Ali, Konstantinos Tzanidakis, Ioannis Goulos, Vassilios Pachidis, Roberto d'Ippolito
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2015, 137(7): 071201.
Paper No: GTP-14-1508
DOI: https://doi.org/10.1115/1.4029103
Published Online: July 1, 2015
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Topics: Design, Engines, Nitrogen oxides, Optimization, Tradeoffs, Pareto optimization, Power stations, Fuel efficiency, Engine design, Emissions
Journal Articles

Multi-objective Optimization of a Regenerative Rotorcraft Powerplant: Trade-off Between Overall Engine Weight and Fuel Economy

Fakhre Ali, Konstantinos Tzanidakis, Ioannis Goulos, Vassilios Pachidis, Roberto d'Ippolito
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2015, 137(12): 121201.
Paper No: GTP-15-1107
DOI: https://doi.org/10.1115/1.4030634
Published Online: June 23, 2015
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Topics: Design, Engines, Optimization, Weight (Mass), Pareto optimization, Fuel efficiency, Tradeoffs, Power stations, Engine design
Proceedings Papers

Real-Time Simulation of Rotor Blade Aeroelasticity for the Multidisciplinary Design of Rotorcraft

Ioannis Goulos, Vassilios Pachidis
Proc. ASME. GT2014, Volume 1A: Aircraft Engine; Fans and Blowers, V01AT01A038, June 16–20, 2014
Paper No: GT2014-26882
DOI: https://doi.org/10.1115/GT2014-26882
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Topics: Aeroelasticity, Blades, Design, Rotors, Simulation, Flight, Stress, Transients (Dynamics), Aerodynamics, Centrifugal force
Proceedings Papers

Techno–Economic Evaluation of Recuperated Gas Turbine Cogeneration Cycles Utilizing Animal Manure and Energy Crops for Biogas Fuel

Georgios Kontokostas, Ioannis Goulos, Anastassios Stamatis
Proc. ASME. GT2014, Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration, V03AT03A004, June 16–20, 2014
Paper No: GT2014-25308
DOI: https://doi.org/10.1115/GT2014-25308
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Topics: Biogas, Combined heat and power, Cycles, Economic analysis, Fuels, Gas turbines, Electricity (Physics), Modeling, Power stations, Sustainability
Proceedings Papers

A Multidisciplinary Approach for the Comprehensive Assessment of Integrated Rotorcraft–Powerplant Systems at Mission Level

Fakhre Ali, Ioannis Goulos, Konstantinos Tzanidakis, Vassilios Pachidis, Roberto d’Ippolito
Proc. ASME. GT2014, Volume 4A: Combustion, Fuels and Emissions, V04AT04A004, June 16–20, 2014
Paper No: GT2014-25037
DOI: https://doi.org/10.1115/GT2014-25037
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Topics: Power stations, Emissions, Nitrogen oxides, Flight, Aircraft, Fuel consumption, Physics, Pollution, Aerodynamics, Combustion chambers
Journal Articles

Real-Time Aero-elasticity Simulation of Open Rotors With Slender Blades for the Multidisciplinary Design of Rotorcraft

Ioannis Goulos, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2015, 137(1): 012503.
Paper No: GTP-14-1319
DOI: https://doi.org/10.1115/1.4028180
Published Online: August 26, 2014
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Topics: Blades, Rotors, Stress, Simulation