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Journal Articles

On Leakage Flows In A Liquid Hydrogen Multi-Stage Pump for Aircraft Engine Applications

Accepted Manuscript
Dimitrios Lamprakis, David John Rajendran, Mani Santhanakrishnan, Seyfettin Coskun, Ioannis Roumeliotis, Vassilios Pachidis, Martin Yates
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-24-1544
https://doi.org/10.1115/1.4066827
Published Online: October 11, 2024
View Article titled, On Leakage Flows In A Liquid Hydrogen Multi-Stage Pump for Aircraft Engine Applications
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Journal Articles

Design and Simulation of eVTOL Aircraft Thermal Management System

Accepted Manuscript
Sangkeun Kang, Chana Anna Saias, Ioannis Roumeliotis, Olivier Broca
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-24-1692
https://doi.org/10.1115/1.4066820
Published Online: October 11, 2024
View Article titled, Design and Simulation of eVTOL Aircraft Thermal Management System
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Journal Articles

Hydrogen & Ammonia Powered Turbofan Design Implications For Next Generation Of Aircraft Engines

Accepted Manuscript
Sarath Sasi, Christos Mourouzidis, David John Rajendran, Ioannis Roumeliotis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power.
Paper No: GTP-24-1046
https://doi.org/10.1115/1.4066433
Published Online: September 6, 2024
View Article titled, Hydrogen & Ammonia Powered Turbofan Design Implications For Next Generation Of Aircraft Engines
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Topics: Aircraft engines, Design, Hydrogen, Turbofans, Aircraft, Engines, Cycles, Thrust, Weight (Mass), Operating temperature
Proceedings Papers

Assessment of a Liquid Hydrogen Conditioning System for Retrofitting on Kerosene Designed Turbofan

Pavlos Rompokos, Vasileios Kyritsis, Christos Mourouzidis, Ioannis Roumeliotis
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A009, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121997
https://doi.org/10.1115/GT2024-121997
View Paper titled, Assessment of a Liquid Hydrogen Conditioning System for Retrofitting on Kerosene Designed Turbofan
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Topics: Hydrogen, Retrofitting, Thermal management, Turbofans
Proceedings Papers

Integrated Performance Assessment and Decarbonising Potential for Aircraft Retrofitted With Sustainable Aviation Fuels

Pavlos Rompokos, Sarath Sasi, Christos Mourouzidis, Ioannis Roumeliotis, Vassilios Pachidis, Michelle Akure, Hannah Swindell
Proc. ASME. GT2024, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A033, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128858
https://doi.org/10.1115/GT2024-128858
View Paper titled, Integrated Performance Assessment and Decarbonising Potential for Aircraft Retrofitted With Sustainable Aviation Fuels
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Topics: Aircraft, Economics , Retrofitting, Sustainable aviation fuels
Proceedings Papers

On Leakage Flows in a Liquid Hydrogen Multi-Stage Pump for Aircraft Engine Applications

Dimitrios Lamprakis, David John Rajendran, Mani Santhanakrishnan, Seyfettin Coskun, Ioannis Roumeliotis, Vassilios Pachidis, Martin Yates
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A034, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128734
https://doi.org/10.1115/GT2024-128734
View Paper titled, On Leakage Flows in a Liquid Hydrogen Multi-Stage Pump for Aircraft Engine Applications
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Topics: Aircraft, Aircraft engines, Hydrogen, Leakage flows, Pumps
Proceedings Papers

Design and Simulation of eVTOL Aircraft Thermal Management System

Sangkeun Kang, Chana Saias, Ioannis Roumeliotis, Olivier Broca
Proc. ASME. GT2024, Volume 5: Cycle Innovations, V005T06A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125709
https://doi.org/10.1115/GT2024-125709
View Paper titled, Design and Simulation of eVTOL Aircraft Thermal Management System
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Topics: Design, Electric vertical take-off and landing aircraft, Heat, Simulation, Stress, Thermal management
Journal Articles

Integrated Hybrid Engine Cycle Design and Power Management Optimization

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2024, 146(10): 101007.
Paper No: GTP-24-1037
https://doi.org/10.1115/1.4065020
Published Online: April 22, 2024
View Article titled, Integrated Hybrid Engine Cycle Design and Power Management Optimization
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Topics: Aircraft, Cycles, Design, Fuels, Gas turbines, Optimization, Retrofitting, Batteries
Proceedings Papers

On the Design of Integrated Thermal Management Systems for eVTOL Aircraft

Sangkeun Kang, Chana Saias, Ioannis Roumeliotis, Olivier Broca
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A023, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103097
https://doi.org/10.1115/GT2023-103097
View Paper titled, On the Design of Integrated Thermal Management Systems for eVTOL Aircraft
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Topics: Aircraft, Cooling systems, Design, Heat, Thermal management
Proceedings Papers

Performance Analysis of an Engine-Mounted Compression System for Aircraft Environmental Control

Albert S. J. van Heerden, Salvatore Ippedico, David John Rajendran, Eduardo Anselmi-Palma, Ioannis Roumeliotis, Vassilios Pachidis, Richard Sharpe, Nicholas Howarth
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100761
https://doi.org/10.1115/GT2023-100761
View Paper titled, Performance Analysis of an Engine-Mounted Compression System for Aircraft Environmental Control
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Topics: Aircraft, Compression, Engines
Proceedings Papers

Integrated Hybrid Engine Cycle Design and Power Management Optimization

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Marko Bacic, Justin Norman
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A027, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103131
https://doi.org/10.1115/GT2023-103131
View Paper titled, Integrated Hybrid Engine Cycle Design and Power Management Optimization
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Topics: Cycles, Design, Hybrid engines, Optimization, Fuels, Aircraft, Gas turbines, Retrofitting, Architecture, Density
Proceedings Papers

Impacts of Alternative Aviation Fuels on Engine Cycle Design and Aircraft Mission Capability

Sarath Sasi, Christos Mourouzidis, Ioannis Roumeliotis, Theoklis Nikolaidis, Vassilios Pachidis, Justin Norman
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A005, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101114
https://doi.org/10.1115/GT2023-101114
View Paper titled, Impacts of Alternative Aviation Fuels on Engine Cycle Design and Aircraft Mission Capability
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Topics: Aircraft, Aviation, Carbon, Cycles, Design, Engines, Fuels
Proceedings Papers

A Characteristic-Based 1D Axial Compressor Model for Stall and Surge Simulations

Sajal Kissoon, Mauro Righi, Lucas Pawsey, Vassilios Pachidis, Richard Tunstall, Ioannis Roumeliotis
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A002, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100709
https://doi.org/10.1115/GT2023-100709
View Paper titled, A Characteristic-Based 1D Axial Compressor Model for Stall and Surge Simulations
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Topics: Compressors, Simulation, Surges, Transients (Dynamics)
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
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2023, 145(3): 031002.
Paper No: GTP-22-1416
https://doi.org/10.1115/1.4055635
Published Online: December 5, 2022
View Article titled, Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems
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Topics: Aircraft, Batteries, Cycles, Design, Engines, Retrofitting, Fuels
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82478
https://doi.org/10.1115/GT2022-82478
View Paper titled, Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems
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Topics: Design methodology, Electric propulsion, Fuels, Engines, Cycles, Aircraft, Gas turbines, Pressure, Algorithms, Architecture
Proceedings Papers

Performance and Economic Assessment of Mechanically Integrated Parallel Hybrid Aircraft

Thibault Carpentier, Jinning Zhang, Albert S. J. van Heerden, Ioannis Roumeliotis
Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A018, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81939
https://doi.org/10.1115/GT2022-81939
View Paper titled, Performance and Economic Assessment of Mechanically Integrated Parallel Hybrid Aircraft
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Topics: Aircraft, Carbon dioxide, Economic analysis, Nitrogen oxides
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83273
https://doi.org/10.1115/GT2022-83273
View Paper titled, Update of the sCO 2 -Test Rig at Cranfield University
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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
Journal Articles

Design Optimization and Variable Geometries Implementation of a High Bypass Three-Shaft Turbofan Engine for EIS2050

Da Mo, Ioannis Roumeliotis, Christos Mourouzidis, Sajal Kissoon, Yixiong Liu
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. September 2022, 144(9): 094501.
Paper No: GTP-22-1032
https://doi.org/10.1115/1.4054944
Published Online: July 21, 2022
View Article titled, Design Optimization and Variable Geometries Implementation of a High Bypass Three-Shaft Turbofan Engine for EIS2050
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Topics: Design, Engines, Fuels, Geometry, Turbofans, Pressure, Flight, Optimization, Weight (Mass), Aircraft
Journal Articles

Assessment of Performance Boundaries and Operability of Low Specific Thrust GUHBPR Engines for EIS2025

Da Mo, Ioannis Roumeliotis, Christos Mourouzidis, Sajal Kissoon, Yixiong Liu
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2022, 144(7): 071002.
Paper No: GTP-21-1595
https://doi.org/10.1115/1.4054405
Published Online: May 20, 2022
View Article titled, Assessment of Performance Boundaries and Operability of Low Specific Thrust GUHBPR Engines for EIS2025
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Topics: Design, Engines, Fuels, Thrust, Flight, Turbofans, Aircraft
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
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2022, 144(4): 041002.
Paper No: GTP-21-1550
https://doi.org/10.1115/1.4052880
Published Online: January 4, 2022
View Article titled, Assessment of Engine Operability and Overall Performance for Parallel Hybrid Electric Propulsion Systems for a Single-Aisle Aircraft
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Topics: Aircraft, Electric propulsion, Electricity (Physics), Engines, Gas turbines, Weight (Mass), Trains, Emissions, Transients (Dynamics), Steady state