Rolls-Royce completes next step on journey to decarbonise business aviation
The tests took place at Rolls-Royce’s Business Aviation headquarters in Dahlewitz, Germany, and are part of the company’s ongoing ambition to play a leading role in the journey to achieve net zero flight by 2050.
As well as proving compatibility with 100% SAF another target of the test campaign was to run a back-to-back engine test with both Jet A-1 and SAF on the same Pearl 10X engine.
The aim was to confirm further improvements in the environmental footprint when switching to SAF. The results from this first back-to-back engine emission test under standard certification conditions provides important correlations for the evaluation of future SAF within our environmental strategy.
The HEFA (Hydro-processed Esters and Fatty Acids) SAF was produced from waste-based sustainable feedstocks such as used cooking oils and waste fat.
This fuel has the potential to significantly reduce net CO2 lifecycle emissions by about 80% compared to conventional jet fuel.
The back-to-back tests conducted with conventional fossil-based fuel and subsequently SAF also confirmed a cleaner combustion of the sustainable fuel, with significantly lower levels of non-volatile particulate matter (nvPM).
In combination with the low NOx combustor technology of the Pearl 10X and its additive manufactured combustor tiles a reduction of all emissions was achieved.
The tests demonstrated once again that Rolls-Royce’s current engine portfolio for large civil and business jet applications can operate with 100% SAF, laying the groundwork for moving this type of fuel towards certification.
At present, SAF is only certified for blends of up to 50% with conventional jet fuel. By the end of the year Rolls-Royce will have proven that all its in-production Trent and business aviation engines are compatible with 100% SAF.