Rolls-Royce leads UK project to demonstrate smarter use of sustainable aviation fuel

Rolls-Royce has announced that it is leading a UK-based research project designed to explore how sustainable aviation fuel (SAF) can be used to reduce not only carbon dioxide emissions but also non-CO₂ effects associated with aviation, such as contrail formation. While SAF is already recognised for its potential to lower lifecycle greenhouse gas emissions, the industry is placing increasing focus on understanding how fuel composition and engine operation influence other climate-warming impacts.
The project brings together academic, industry and technology partners to examine how different blends and production pathways of SAF behave during combustion in modern gas turbine engines.
This includes analysing emissions of particulates and other by-products that can contribute to cloud formation at high altitude.
Rolls-Royce will provide testing capability, data interpretation and engine expertise. The research will be supported by laboratory work, controlled engine tests and flights using representative operating conditions.
The company states that gaining a clearer scientific understanding of these effects is essential for guiding future policy and fuel certification standards. It also supports the wider aim of ensuring that the ramp-up of SAF production delivers the greatest possible climate benefit.
Although SAF is already approved for use in blends of up to 50 per cent today, Rolls-Royce continues to work towards full-compatibility engine testing to enable 100 per cent SAF operations in commercial service.
The project forms part of the UK’s ongoing investment in sustainable aviation and low-carbon aerospace innovation.