Liquefied natural gas for civil aviation

Bibliographic research

Liquefied natural gas

for civil aviation

By Irnas LASSOUANI, Romane ARNAUDON, Tom RINGARD, Mamadou MACALOU, Nathaël BEKIER

06/12/2023

Index

Author(s)/journal/publisher

Text

Text (cont.)

Questions

06/12/2023

Author(s)/Journal/Publisher

Our article

Liquefied Natural Gas for Civil Aviation

This article is part of the review Recent advances in natural gas combustion and emissions from conventional transmission systems and hybrid propulsion systems.

06/12/2023

01/18

Author(s)/Journal/Publisher

Authors

Pavlos Rompokos

Devaiha Nalianda

Sajal Kissoon

Ioannis Rouméliotis

• Research Fellow in Gas Turbine Propulsion at Cranfield University
• Member of the Institute of Mechanical Engineers and the Royal Aeronautical Society
• Member of the Rolls-Royce Doctorate Network

• Senior Lecturer in gas turbine propulsion and thermal systems integration with the Centre for Propulsion, Cranfield University

Crandfield University in department of Power and Propulsion

Crandfield University in department of Power and Propulsion

06/12/2023

02/18

Author(s)/Journal/Publisher

Authors

Théoklis Nikolaidis

Andrew Rolt

• Received his MSc in Thermal Power at Cranfield University in 2003. He followed this with a PhD in 2008 at Cranfield
• Reader in gas turbine engine performance
• He has contributed on the development of Cranfield's software known as “Turbomatch”)

• He worked on aero engine component design and whole engine preliminary design at Rolls-Royce

• currently working on the Horizon Europe MINIMAL project

06/12/2023

03/18

Peer-review process

06/12/2023

04/18

Publisher

Multidisciplinary Digital Publishing Institue

Academic publisher of open access scientific journals

Based in Basel, Switzerland

Founded in 1996

It has offices in:Beijing and Wuhan,Barcelona (Spain),Belgrade (Serbia),Cluj (Romania),Manchester (UK),Tokyo (Japan),Krakow (Poland),Toronto (Canada)Singapore

06/12/2023

05/18

Text - Key words

Liquefied natural gas (LNG)

Mission analysis

Short-range aircraft

CO2 emission reduction

Civil aviation

Engine performance

06/12/2023

06/18

Introduction

Ever-growing air transport :

Making aviation more sustainable and reduce CO2 emissions

Find alternative fuels for civil aviation Integrating Liquefied Natural Gas (LNG) as an alternative fuel

Study : converting a commonly used aircraft model to a more eco-friendly fuel source (Boeing 737-800 with LNG)The aim is to assess the potential benefits of LNG: - Economic benefits - Aircraft performance benefits : payload, range, fuel efficiency and emissions.

06/12/2023

07/18

Previous studies & context

First attempts

TU-155

Beech Sundowner

08/18

06/12/2023

Social and environmental concerns

Social aspect

Environmental aspect

- More sustainable and eco- friendly aviation practices would benefit both the aviation industry and passengers - The use of LNG could also reduce fuel costs and therefore bring significant economic benefits through changes in ticket prices

- Reduce the carbon footprint by considering LNG as an alternative to kerosene - ACARE: 75% reduction in CO2 emissions per passenger per kilometer by 2050 - Challenge : methane, main components of LNG and contributor to global warming

06/12/2023

09/18

How does the researchers attempt to answer the research question?

Challenges with LNG

- Variable composition- Airframe modifications - Engine system adjustments - Design and simulation framework - LNG tank sizing and weight

Boeing 737-800

06/12/2023

10/18

How has assessment been carried out ?

06/12/2023

11/18

Key findings

- Reduced autonomy for maximum payload mission - Increased autonomy for the ferry mission

Study of a Boeing 737-800 converted to LNG :

Study of a Boeing 737-800 converted to LNG for various missions

- Aircraft weight increased

- Increased energy consumption per passenger

- Reduction in fuel consumption and therefore reduction in CO2 emissions

- Lower cost of LNG compared to kerosene

06/12/2023

12/18

Text - Discussion

Quantification of Benefits

Energy Consumption per Passenger

Environmental and Economic Benefits

Performance Assessment

Impact on Range

Infrastructure and Logistic Challenges

06/12/2023

13/18

Strengths and limitations

Strenghts

Limitations

• Comprehensive Simulation Framework

• Case Study on a Popular Aircraft Model

• Detailed Technical Analysis

• Consideration of Different LNG Sources

• Environmental and Economic Evaluation

• Insights into Future Propulsion Configurations

• Focus on a Single Aircraft Model.

• Simulation Assumptions

• Limited Exploration of Safety Aspects

• Simplified Approach to Fuel Sources

• Limited Exploration of Operational Changes

06/12/2023

14/18

Conclusions of the Article

Reduce CO2 emissions 18% &fuel cost per passenger 16%

Strengths and limitations

Increase maximum TOW 4%

Infrastructure gaps

Environmental and economic benefits

Slight reduction in range

06/12/2023

15/18

How the article is tied to our project ?

The research provides valuable insights into several key ideas :

Technical feasibility

Economic Considerations

Environmental impact

Infrastructure challenges

Desigining an airport that matches alternative, environmentally friendly aviation technologies

Minimizing the environmental impact footprint of aviation activities

Making a sustainable and economically viable green airport model

Considering the necessary modifications to existing infrastructure

16/18

06/12/2023

Questions

Links to our courses

Flight mechanics, environmental courses, logistics...

Positive impacts

Environmental and economic benefits

Negative impacts

Energy consumption and infrastructure challenges

Ethical issues ?

Safety risks and equity problems

17/18

06/12/2023

Bibliographic research

Thank you!

By Irnas LASSOUANI, Romane ARNAUDON, Tom RINGARD, Mamadou MACALOU, Nathaël BEKIER

18/18

06/12/2023