Rolls-Royce has completed the first ground tests on its massive UltraFan engine, claiming it's at least 10% more efficient than any other large aero …
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World's largest and most efficient aircraft engine aces first tests
Rolls-Royce has completed the first ground tests on its massive UltraFan engine, claiming it's at least 10% more efficient than any other large aero engine in service today. This carbon/titanium beauty will roll out on airliners in the 2030s.
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