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Engines
Rolls-Royce Starts Work on First UltraFan Engine
Planning to complete its UltraFan demonstrator by year-end, Rolls begins to build the engine’s first example in Derby, UK.
The Rolls-Royce UltraFan will feature a 140-inch-diameter fan. (Photo: Rolls-Royce)
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By
Gregory Polek
• Senior Editor
March 29, 2021
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