The world's most efficient aircraft engine

Rolls-Royce conducts first test of new UltraFan jet engine at Testbed 80 in Derby, UK.

UltraFan is touted as the world's most efficient aero engine. Photo: Rolls-Royce

British company Rolls-Royce claims the UltraFan is the quietest and most fuel-efficient aero engine ever, delivering around 10% better fuel efficiency than the Trent XWB - the world's most efficient aero engine today, Interesting Engineering reported on May 20.

The first UltraFan trials took place at the Testbed 80 facility in Singin, Derby, with the new engine running on 100% Sustainable Aviation (SAV) fuel, which Rolls-Royce explains is made primarily from raw materials derived from waste, such as cooking oil.

"UltraFan is the world's largest experimental aero engine, featuring a range of new technologies that deliver greater fuel efficiency, resulting in lower emissions and greater sustainability. These technologies can be scaled up and further developed to create engines with thrusts ranging from 11.3 tonnes to over 45.3 tonnes for narrow-body or wide-body aircraft," Rolls-Royce explained.

The UltraFan features a giant 14-inch diameter fan and a relatively small core, which Rolls-Royce says is key to the new engine’s efficiency. The engine delivered 64 megawatts of power during testing and improved fuel economy by 25 percent compared to competitors like the Trent.

“UltraFan is designed for the future – it will be 100% SAV-ready from day one. We are also actively exploring potential options for hydrogen and hybrid-electric power solutions,” Rolls-Royce said.

The new test is a step towards the aerospace sector’s goal of net-zero emissions flights by 2050. The UltraFan project, which is funded by the UK government , was announced in 2014 and is still in development.

“This cutting-edge technology will help support the transition to a greener future for aviation, while also attracting further investment into the UK aerospace sector, helping to grow the economy ,” said Kemi Badenoch, UK Business and Trade Secretary.

Thu Thao (According to Interesting Engineering )

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