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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

On Hysteresis in a Variable Pitch Fan Transitioning to Reverse Thrust Mode and Back

Dimitrios Vitlaris, David John Rajendran, Richard Tunstall, John Whurr, Vassilios Pachidis
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A052, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128701
https://doi.org/10.1115/GT2024-128701
View Paper titled, On Hysteresis in a Variable Pitch Fan Transitioning to Reverse Thrust Mode and Back
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Topics: Flow (Dynamics), Thrust, Engines, Aircraft, Blades, Airfoils, Aviation, Climate neutrality, Delays, Displacement
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

Acoustic Excitation As a Flow Control Technique in a High-Speed Compressor Cascade

Seyfettin Coskun, David John Rajendran, Vassilios Pachidis, Marko Bacic
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A045, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128637
https://doi.org/10.1115/GT2024-128637
View Paper titled, Acoustic Excitation As a Flow Control Technique in a High-Speed Compressor Cascade
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Topics: Acoustics, Cascades (Fluid dynamics), Compressors, Excitation, Flow control
Journal Articles

Insights Into the Flow Field and Performance of a Boundary Layer Pump

David John Rajendran, Kyril Palaveev, Eduardo Anselmi, Mani Santhanakrishnan, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2024, 146(6): 061002.
Paper No: GTP-23-1390
https://doi.org/10.1115/1.4063834
Published Online: December 26, 2023
View Article titled, Insights Into the Flow Field and Performance of a Boundary Layer Pump
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Topics: Boundary layers, Disks, Entropy, Flow (Dynamics), Pressure, Pumps, Rotors, Design
Journal Articles

On the Flow Physics During the Transition of a Variable Pitch Fan From Nominal Operation to Reverse Thrust Mode

Dimitrios Vitlaris, David John Rajendran, Richard Tunstall, John Whurr, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2024, 146(4): 041001.
Paper No: GTP-23-1388
https://doi.org/10.1115/1.4063900
Published Online: December 1, 2023
View Article titled, On the Flow Physics During the Transition of a Variable Pitch Fan From Nominal Operation to Reverse Thrust Mode
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Topics: Airfoils, Engines, Flow (Dynamics), Thrust, Aircraft, Blades, Rotation
Proceedings Papers

Insights Into the Flow Field and Performance of a Boundary Layer Pump

Kyril Palaveev, David John Rajendran, Eduardo Anselmi, Mani Santhanakrishnan, Vassilios Pachidis
Proc. ASME. GT2023, Volume 9: Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications, V009T18A006, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102186
https://doi.org/10.1115/GT2023-102186
View Paper titled, Insights Into the Flow Field and Performance of a Boundary Layer Pump
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Topics: Boundary layers, Flow (Dynamics), Pumps
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

On the Flow Physics During the Transition of a Variable Pitch Fan From Nominal Operation to Reverse Thrust Mode

Dimitrios Vitlaris, David John Rajendran, Vassilios Pachidis, Richard Tunstall, John Whurr
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A016, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101980
https://doi.org/10.1115/GT2023-101980
View Paper titled, On the Flow Physics During the Transition of a Variable Pitch Fan From Nominal Operation to Reverse Thrust Mode
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Topics: Flow (Dynamics), Physics, Thrust
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82446
https://doi.org/10.1115/GT2022-82446
View Paper titled, Estimation of Resultant Airframe Forces for a Variable Pitch Fan Operating in Reverse Thrust Mode
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Topics: Flow (Dynamics), Thrust
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
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2022, 144(12): 121017.
Paper No: GTP-22-1306
https://doi.org/10.1115/1.4055489
Published Online: October 14, 2022
View Article titled, Estimation of Resultant Airframe Forces for a Variable Pitch Fan Operating in Reverse Thrust Mode
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Topics: Aircraft, Engines, Flow (Dynamics), Thrust, Drag (Fluid dynamics)
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
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111019.
Paper No: GTP-21-1290
https://doi.org/10.1115/1.4051961
Published Online: October 5, 2021
View Article titled, On the Use of an Inflatable Rubber Lip to Improve the Reverse Thrust Flow Field in a Variable Pitch Fan
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Topics: Design, Engines, Flow (Dynamics), Rubber, Thrust, Aircraft, Nozzles
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59526
https://doi.org/10.1115/GT2021-59526
View Paper titled, On the Use of an Inflatable Rubber Lip to Improve the Reverse Thrust Flow Field in a Variable Pitch Fan
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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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2021, 143(7): 071001.
Paper No: TURBO-20-1252
https://doi.org/10.1115/1.4050331
Published Online: April 8, 2021
View Article titled, Flow Distortion Into the Core Engine for an Installed Variable Pitch Fan in Reverse Thrust Mode
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Topics: Engines, Flow (Dynamics), Pressure, Thrust, Separation (Technology)
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
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14174
https://doi.org/10.1115/GT2020-14174
View Paper titled, Flow Distortion Into the Core Engine for an Installed Variable Pitch Fan in Reverse Thrust Mode
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Topics: Engines, Flow (Dynamics), Thrust
Proceedings Papers

Fan Flow Field in an Installed Variable Pitch Fan Operating in Reverse Thrust for a Range of Aircraft Landing Speeds

David John Rajendran, Vassilios Pachidis
Proc. ASME. GT2019, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A017, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91039
https://doi.org/10.1115/GT2019-91039
View Paper titled, Fan Flow Field in an Installed Variable Pitch Fan Operating in Reverse Thrust for a Range of Aircraft Landing Speeds
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Topics: Aircraft, Flow (Dynamics), Thrust, Engines, Nozzles, Air flow, Design, Ducts, Exhaust systems, Guide vanes
Journal Articles

Fan Flow Field in an Installed Variable Pitch Fan Operating in Reverse Thrust for a Range of Aircraft Landing Speeds

David John Rajendran, Vassilios Pachidis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2019, 141(10): 101018.
Paper No: GTP-19-1333
https://doi.org/10.1115/1.4044686
Published Online: September 20, 2019
View Article titled, Fan Flow Field in an Installed Variable Pitch Fan Operating in Reverse Thrust for a Range of Aircraft Landing Speeds
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Topics: Flow (Dynamics), Engines, Thrust, Aircraft
Proceedings Papers

Design and Analysis of Radial Turbine for Turbocharger Application

Bharathan Raghavan Desikan, David John Rajendran, Sharad Kapil, Seepana Venkata Ramana Murty, Deshkulkarni Kishore Prasad
Proc. ASME. GTINDIA2017, Volume 1: Compressors, Fans and Pumps; Turbines; Heat Transfer; Combustion, Fuels and Emissions, V001T02A011, December 7–8, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2017-4860
https://doi.org/10.1115/GTINDIA2017-4860
View Paper titled, Design and Analysis of Radial Turbine for Turbocharger Application
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Topics: Design, Turbines, Turbochargers, Wheels, Compressors, Computer software, Exhaust systems, Gases, Internal combustion engines, Kinetic energy
Proceedings Papers

Aerodynamic Performance of an Unlocated High Pressure Turbine Rotor With Worn Tip Seal Fins

Lucas Pawsey, David John Rajendran, Vassilios Pachidis
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT40A023, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64312
https://doi.org/10.1115/GT2017-64312
View Paper titled, Aerodynamic Performance of an Unlocated High Pressure Turbine Rotor With Worn Tip Seal Fins
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Topics: Fins, High pressure (Physics), Rotors, Turbines, Displacement, Manufacturing, Blades, Failure, Geometry, Stators