easyJet and Rolls-Royce Complete Successful 100% Hydrogen Aero Engine Test
easyJet and Rolls-Royce have completed a major industry-first milestone by successfully testing a modern aircraft engine running on 100% hydrogen, marking a significant step forward in sustainable aviation technology.
The companies confirmed that a modified Rolls-Royce Pearl 15 engine was able to operate on hydrogen at full take-off power during ground testing at NASA Stennis Space Center in the United States. The tests demonstrated that a modern jet engine can safely run on hydrogen across a full flight cycle, including start-up, take-off, cruise, and landing.
The achievement follows a four-year collaboration between easyJet, Rolls-Royce, and global partners to explore hydrogen as a viable aviation fuel. The programme builds on earlier testing carried out in the UK and Europe, where engineers progressively developed and scaled hydrogen combustion technologies before integrating them into a full demonstrator engine.
The testing programme confirmed that hydrogen can be used in gas turbine engines designed for narrowbody aircraft, offering potential for significant reductions in aviation-related carbon emissions. Engineers also gathered key insights into hydrogen combustion, fuel systems, and engine integration, which are expected to inform future aircraft development.
Tata Consultancy Services supported the programme by contributing engineering and digital expertise, while the Health and Safety Executive played a role in developing and testing hydrogen infrastructure to meet strict safety requirements.
Hydrogen propulsion is being explored as part of a broader strategy to decarbonise aviation, alongside other solutions such as sustainable aviation fuel. The successful test provides further evidence that hydrogen could play a role in reducing emissions from future flights, particularly on short- and medium-haul routes.
The companies said the milestone demonstrates both the technical viability of hydrogen-powered flight and the growing readiness of the aviation industry to move from concept to real-world application.
