With flight-testing of the Rolls-Royce Trent XWB-powered Airbus A350-900 getting underway, and rig tests of a scaled compressor for General Electric's GE9X about to begin for Boeing's upcoming 777X, the scene is set for an epic new chapter in the ongoing battle of the big fans. Although there will be a five-year gap between the entry into service of the first Trent XWB in 2014 and the debut of the GE9X around the end of the decade, the two engines set the technological benchmark for ...


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