Engines
Trent Engine Upgrades Cover Fuel Efficiency and Reliability
The A350-900's new Trent XWB-84 turbofans will burn 1% less fuel
Rolls-Royce Trent XWB engine
Rolls-Royce is implementing a series of upgrades to its Trent XWB family of turbofan engines that power airliners including the Airbus A350 and the Boeing 787.

Rolls-Royce is preparing to introduce an upgraded version of its Trent XWB-84 turbofan that it expects to deliver a 1% improvement in fuel burn efficiency for the Airbus A350-900 airliner. The company aims to achieve certification later this year for the first production example of a modified engine now undergoing assembly. 

The upgrade, which Airbus flight-tested on an A350, centers on aerodynamic improvements that have resulted in efficiency gains in the XWB-84’s compressor system. By redistributing the flow of air through the high-pressure turbine (HPT), Rolls-Royce engineers have reduced operating temperatures.