First study on 100% sustainable aviation fuel in passenger jet shows early promise
Initial findings from a world-first study on the impact of 100% sustainable aviation fuel (SAF) on both engines of a commercial jet have shown promising early results.
The ECLIF3 study, a collaboration between Airbus, Rolls-Royce, German research center DLR, and SAF producer Neste, has yielded promising early results from the first-ever test of 100% sustainable aviation fuel (SAF) in both engines of a commercial passenger jet. The study involved an Airbus A350 aircraft powered by Rolls-Royce Trent XWB engines.
The in-flight emissions tests and associated ground testing began earlier this year. The research team plans to publish its findings in academic journals towards the end of 2022 and in 2023. The results are intended to support Airbus and Rolls-Royce in their efforts to ensure the aviation sector is ready for the large-scale use of SAF, a key component in decarbonizing the industry. Currently, aircraft are permitted to operate on a 50% blend of SAF and conventional jet fuel, but both companies support the certification of 100% SAF use.
Initial findings indicate that SAF releases fewer particulates than conventional kerosene across all engine operating conditions. This suggests potential improvements in air quality around airports and a reduced climate impact. Additionally, SAF has a lower density but higher energy content per kilogram, which may offer fuel efficiency advantages.
"Sustainable aviation fuel is widely recognized as a crucial solution to mitigating the climate impact of the aviation sector," said Jonathan Wood, Neste’s Vice President Europe, Renewable Aviation. "This project will provide data to support the use of SAF at higher concentrations than 50% and clarify the additional benefits."