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Presented by Rolls-Royce

RollsRoyce develops and delivers complex power and propulsion solutionsfor safety critcal applications in the air, at sea and on land. Our products and service packages enable our customers to connect people, societies, cultures and economies together they meet the growing need for power generation across multiple industries; and enable governments to equip their armed forces with the power required to protect their citizens.

Rolls-Royce’s UltraFan Technology Demonstrator Hits Peak Power

Military Africa by Military Africa
November 15, 2023
in Aerospace, Press Release, Technology
Reading Time: 3 mins read
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Rolls-Royce announces it has successfully run its UltraFan® technology demonstrator to maximum power at its facility in Derby, UK. The initial stage of the test was conducted using 100% Sustainable Aviation Fuel (SAF).

This is an important milestone for the UltraFan demonstrator, which was successfully tested for the first time earlier this year. Since then, the UltraFan team has been gradually increasing the power as part of the rigorous testing regime and the demonstrator has performed in line with our expectations. The results of the test will provide us with valuable learning and data, which our teams will now take away and continue to analyse.

This achievement reinforces our confidence in the suite of technologies that has been developed as part of the UltraFan programme. Confirming this capability is a big step towards improving the efficiency of current and future aero-engines as UltraFan delivers a 10% efficiency improvement over our Trent XWB, which is already the world’s most efficient large aero-engine in service. In total that’s a 25% efficiency gain since the launch of the first Trent engine.

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UltraFan’s scalable technology from ~25,000-110,000lb thrust also offers the potential to power the new narrowbody and widebody aircraft anticipated in the 2030s.

As part of the UltraFan development programme we have identified a number of technologies that are potentially transferable to our current Trent engines, which will provide our customers with even greater availability, reliability and efficiency.

Tufan Erginbilgic, CEO, Rolls-Royce plc, said: “Hitting full power with our UltraFan demonstrator sends a strong message that Rolls-Royce is at the cutting-edge of innovation and technology, leading the way in the transition to more efficient and sustainable aviation. This fantastic milestone puts us in a strong position to support the plans of our customers as they develop the next generation of super-efficient aircraft.”

Simon Burr, Group Director of Engineering, Technology and Safety, Rolls-Royce plc, added: “We estimate that to reach Net Zero flying by 2050, a combination of highly-efficient, latest-generation gas turbines such as UltraFan operating on 100% SAF are likely to contribute around 80% of the total solution, which is why today’s announcement is such an important milestone for Rolls-Royce and the wider industry.”

The UltraFan demonstrator run to full power took place in the world’s largest and smartest indoor aero-engine testing facility – Testbed 80, in Derby, UK.

Testing the demonstrator is the culmination of many years work, which has been supported by the UK Government through the Aerospace Technology Institute (ATI), Innovate UK; the EU’s Clean Sky programmes plus LuFo and the State of Brandenburg in Germany.

UltraFan has been a decade in the making, with the concept unveiled publicly in 2014. It is a fundamentally different design architecture to that within the approximately 4,200 Rolls-Royce Civil large engines currently in service, as it incorporates a geared design that no other industry player has produced at this size before.

Demonstrating at this scale gives us the flexibility to scale down as required by our customers. It also puts us in the unique position of being able to offer a portfolio of two-shaft, three-shaft, direct drive and geared propulsion solutions to power future aircraft.

Tests on a full annular combustor of a Pearl 700 engine at DLR in Cologne running on 100% hydrogen have proven the fuel can be combusted at conditions that represent maximum take-off thrust.

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Meanwhile, Rolls-Royce is carry out the development of turbogenerator technology, which includes a new small engine designed for hybrid-electric applications. The system will be an on-board power source with scalable power offerings and will complement the Rolls-Royce Electrical propulsion portfolio, enabling extended range on sustainable aviation fuels and later as it comes available through hydrogen combustion.

The turbogenerator will recharge batteries after take-off or power propellers directly, enabling aircraft to switch between power sources in flight. The research and development of this technology is being part funded by the German Ministry for Economic Affairs and Climate Action.

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