Airbus A350 customers have been reassured by the sight of a Trent XWB engine strapped to the wing of an A380 flying testbed. However, to Rolls-Royce this outward display of progress is just the tip of the iceberg as it works on certification and ramping up production of the first flight-test engines for the new twin. Rolls is poised to complete the final round of certification tests of the Trent XWB-84 for the A350-800 and -900, and has also frozen the design of the higher-thrust Trent ...


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