Putting the future of flying to the test

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A gearbox can efficiently transfer the output of the quickly rotating turbine to
A gearbox can efficiently transfer the output of the quickly rotating turbine to the slowly rotating fan. (Image: Rolls-Royce plc)

The world’s most powerful aerospace gearbox will go into service in 2025: It is part of the Rolls-Royce UltraFan design and will transfer up to 100,000 hp. In a project supported by the German federal government, scientists at the Technical University of Munich (TUM) are investigating how the gearbox’s properties vary according to size and how they can be optimized.

More than anything, the aircraft engines of the future will have to do one thing: reduce fuel consumption while cutting emissions even further. The UltraFan concept from Rolls-Royce entails an ambitious goal. ...

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