Rolls-Royce starts sustainable fuel tests in Derby

Rolls-Royce is to start engine ground tests at its Derby civil aerospace site using 100% sustainable aviation fuel.

As part of its ongoing decarbonisation strategy, the engineering giant will use the fuel, known as SAF, for the first time in tests at its Sinfin site on next-generation engine technology.

According to the firm, the tests will aim to confirm that unblended SAF makes a significant contribution to improving the environmental performance of gas turbine engines.

The SAF being used in the tests was produced by low-carbon fuel specialist World Energy in Paramount, California, sourced by Shell Aviation and delivered by SkyNRG.

View fullsize

According to Rolls-Royce, the unblended fuel has the potential to significantly reduce net CO2 lifecycle emissions by more than 75% compared to conventional jet fuel, with the possibility of further reductions in years to come.

The tests aim to demonstrate that Rolls-Royce’s current engines can operate with 100% SAF as a full “drop-in” option, laying the groundwork for moving such fuels towards certification.

At present, SAF is certified for blends of up to 50% with conventional jet fuel and can be used on all current Rolls-Royce engines.

Starting in the coming weeks in Derby, UK, the ground tests will involve a Trent engine which also incorporates ALECSys (Advanced Low Emissions Combustion System) lean-burn technology.

ALECSys is part of the UltraFan next generation engine demonstrator programme, which offers a 25% fuel saving over the first generation of Trent engines.

Paul Stein, Rolls-Royce’s chief technology officer, said: “Aviation is a tremendous force for good, keeping the world connected, but we have to do that sustainably.

“These tests aim to show that we can deliver real emissions reductions.

“If SAF production can be scaled up – and aviation needs 500 million tonnes a year by 2050 – we can make a huge contribution for our planet.”

Recently, Derby revealed ambitions to become the UK’s centre of excellence for future fuels technology.

The initiative, led by Derby City Council, aims to utilise the city’s advanced manufacturing expertise to revolutionise the way low-carbon energy is used to power businesses, transport and homes.

The city is assembling a partnership of leading companies and academics to drive forward the plans.