Reviewing the development of alternative aviation fuels and aircraft propulsion systems
Other conference contribution, 2020

Alternative aviation fuels such as bio-jet fuels, liquid natural gas (LCH4), hydrogen (H2), electro-jet fuels and direct electricity use play an important role in decarbonizing the aviation sector. New aircraft propulsion systems are being developed but low-blending of fuels is possible for some options. It is imperative to understand the technical, environmental and economic performance of the different alternative aviation fuels and the new engine and propulsion technologies for the utilization of these fuels. We have reviewed various literature to map the current status of development on alternative aviation fuels and related aircraft propulsion systems in relation to different perspective such as their cost and technical maturity. There are several challenges related to the design and implementation of the fuels and new propulsion systems. For instance, the volumetric energy content of alternative fuels is lower than the conventional aviation fuels which requires larger fuel storage tanks. Despite the advantageous environmental performance, both the bio-jet and electro-jet fuels are currently not economically competitive. Yet, studies forecast that increased use of alternative aviation fuels is possible after modifications of engines, fuel storage tanks and improvements of the aerodynamics of aircraft and by introducing subsidies and/or carbon taxes on conventional jet fuels.

aircraft propulsion systems

Alternative aviation fuels






Karna Dahal

Chalmers, Mechanics and Maritime Sciences (M2), Maritime Studies

Selma Brynolf

Chalmers, Mechanics and Maritime Sciences (M2), Maritime Studies

Maria Grahn

Chalmers, Mechanics and Maritime Sciences (M2), Maritime Studies

Julia Hansson

Chalmers, Mechanics and Maritime Sciences (M2), Maritime Studies

IVL Swedish Environmental Research Institute

Mariliis Lehtveer

Chalmers, Space, Earth and Environment, Energy Technology

3rd ECATS Conference, Making Aviation Environmentally Sustainable
Gothenburg, Sweden,

Sustainable aviation fuels for a carbon constrained world

Chalmers, 2019-07-01 -- .

Subject Categories

Other Mechanical Engineering

Other Environmental Engineering

Energy Systems

Driving Forces

Sustainable development

Areas of Advance




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Latest update

2/7/2022 1