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Journal Articles

On the Effects of Optimal Implementation of Variable Rotor Speed and Power Management on Hybrid-Electric Rotorcraft

Chana Anna Saias, 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 2023, 145(3): 031028.
Paper No: GTP-22-1245
DOI: https://doi.org/10.1115/1.4056855
Published Online: February 23, 2023
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Topics: Fuels, Rotors, Engines, Design, Batteries, Weight (Mass), Flight, Optimization
Journal Articles

Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2023, 145(3): 031002.
Paper No: GTP-22-1416
DOI: https://doi.org/10.1115/1.4055635
Published Online: December 5, 2022
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Topics: Aircraft, Batteries, Cycles, Design, Engines, Retrofitting, Fuels
Proceedings Papers

Update of the sCO 2 -Test Rig at Cranfield University

Eduardo Anselmi, Pierre Belleoud, Ioannis Roumeliotis, Vassilios Pachidis
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A024, June 13–17, 2022
Paper No: GT2022-83273
DOI: https://doi.org/10.1115/GT2022-83273
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Topics: Carbon dioxide, Cycles, Data acquisition systems, Fluids, Heat exchangers, Heat recovery, Supercritical carbon dioxide, Temperature measurement, Thermal management, Thermodynamic power cycles
Proceedings Papers

Estimation of Resultant Airframe Forces for a Variable Pitch Fan Operating in Reverse Thrust Mode

David John Rajendran, Richard Tunstall, Vassilios Pachidis
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A024, June 13–17, 2022
Paper No: GT2022-82446
DOI: https://doi.org/10.1115/GT2022-82446
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Topics: Flow (Dynamics), Thrust
Proceedings Papers

Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A026, June 13–17, 2022
Paper No: GT2022-82478
DOI: https://doi.org/10.1115/GT2022-82478
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Topics: Design methodology, Electric propulsion, Fuels, Engines, Cycles, Aircraft, Gas turbines, Pressure, Algorithms, Architecture
Journal Articles

Estimation of Resultant Airframe Forces for a Variable Pitch Fan Operating in Reverse Thrust Mode

David John Rajendran, Richard Tunstall, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2022, 144(12): 121017.
Paper No: GTP-22-1306
DOI: https://doi.org/10.1115/1.4055489
Published Online: October 14, 2022
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Topics: Aircraft, Engines, Flow (Dynamics), Thrust, Drag (Fluid dynamics)
Journal Articles

Assessment of Engine Operability and Overall Performance for Parallel Hybrid Electric Propulsion Systems for a Single-Aisle Aircraft

Sangkeun Kang, Ioannis Roumeliotis, Jinning Zhang, Olivier Broca, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2022, 144(4): 041002.
Paper No: GTP-21-1550
DOI: https://doi.org/10.1115/1.4052880
Published Online: January 4, 2022
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Topics: Aircraft, Electric propulsion, Electricity (Physics), Engines, Gas turbines, Weight (Mass), Trains, Emissions, Transients (Dynamics), Steady state
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

On the Use of an Inflatable Rubber Lip to Improve the Reverse Thrust Flow Field in a Variable Pitch Fan

David John Rajendran, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111019.
Paper No: GTP-21-1290
DOI: https://doi.org/10.1115/1.4051961
Published Online: October 5, 2021
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Topics: Design, Engines, Flow (Dynamics), Rubber, Thrust, Aircraft, Nozzles
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
Proceedings Papers

Assessment of Engine Operability and Overall Performance for Parallel Hybrid Electric Propulsion Systems for a Single-Aisle Aircraft

Sangkeun Kang, Ioannis Roumeliotis, Jinning Zhang, Vassilios Pachidis, Olivier Broca
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T06A001, June 7–11, 2021
Paper No: GT2021-58655
DOI: https://doi.org/10.1115/GT2021-58655
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Topics: Aircraft, Electric propulsion, Engines, Pressure, Compressors, Gas turbines, High pressure (Physics), Weight (Mass), Electricity (Physics), Emissions
Proceedings Papers

On the Use of an Inflatable Rubber Lip to Improve the Reverse Thrust Flow Field in a Variable Pitch Fan

David John Rajendran, Vassilios Pachidis
Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T01A015, June 7–11, 2021
Paper No: GT2021-59526
DOI: https://doi.org/10.1115/GT2021-59526
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Topics: Flow (Dynamics), Rubber, Separation (Technology), Thrust
Journal Articles

Flow Distortion Into the Core Engine for an Installed Variable Pitch Fan in Reverse Thrust Mode

David John Rajendran, Vassilios Pachidis
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. July 2021, 143(7): 071001.
Paper No: TURBO-20-1252
DOI: https://doi.org/10.1115/1.4050331
Published Online: April 8, 2021
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Topics: Engines, Flow (Dynamics), Pressure, Thrust, Separation (Technology)
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

Performance and Emission Assessment of Thermo-Electric Power Plant for Rotorcraft Propulsion

Ioannis Roumeliotis, Francesco Arena, Yize Liu, Stavros Vouros, Vassilios Pachidis, Olivier Broca, Djiby Toure, Deniz Unlu
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A031, September 21–25, 2020
Paper No: GT2020-15724
DOI: https://doi.org/10.1115/GT2020-15724
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Topics: Emissions, Power stations, Propulsion, Electricity (Physics), Nitrogen oxides, Trains, Engines, Gas turbines, Propulsion systems, Carbon dioxide
Proceedings Papers

Integrated Systems Simulation for Assessing Fuel Thermal Management Capabilities for Hybrid-Electric Rotorcraft

Ioannis Roumeliotis, Lorenzo Castro, Soheil Jafari, Vassilios Pachidis, Louis De Riberolles, Olivier Broca, Deniz Unlu
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A011, September 21–25, 2020
Paper No: GT2020-15107
DOI: https://doi.org/10.1115/GT2020-15107
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Topics: Fuels, Integrated systems, Simulation, Thermal management, Propulsion systems, Cooling, Stress, Fuel storage, Air travel, Aircraft
Proceedings Papers

Design Space Exploration of Turbine Blade Shroud Interlock for Flutter Stability

Olatz Larrieta, Roberto Alonso, Óscar Pérez Escobar, Ibrahim Eryilmaz, Vassilios Pachidis
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A024, September 21–25, 2020
Paper No: GT2020-16040
DOI: https://doi.org/10.1115/GT2020-16040
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Topics: Blades, Design, Flutter (Aerodynamics), Stability, Turbine blades
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
Proceedings Papers

Considerations on Axial Compressor Bleed for Sub-Idle Performance Models

Ferran Roig Tió, Luis E. Ferrer-Vidal, Hasani Azamar Aguirre, Vassilios Pachidis
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A018, September 21–25, 2020
Paper No: GT2020-14413
DOI: https://doi.org/10.1115/GT2020-14413
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Topics: Compressors
Proceedings Papers

Flow Distortion Into the Core Engine for an Installed Variable Pitch Fan in Reverse Thrust Mode

David John Rajendran, Vassilios Pachidis
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A005, September 21–25, 2020
Paper No: GT2020-14174
DOI: https://doi.org/10.1115/GT2020-14174
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Topics: Engines, Flow (Dynamics), Thrust