Rolls-Royce Trent XWB
The Rolls-Royce Trent XWB is a high bypass turbofan produced by Rolls-Royce plc. In July 2006, the Trent XWB was selected to power exclusively the Airbus A350. The first engine was run on 14 June 2010, it first flew on an A380 testbed on 18 February 2012, it was certified in early 2013, and it first flew on an A350 on 14 June 2013. It had its first in-flight shutdown on 11 September 2018 as the fleet accumulated 2.2 million flight hours. It keeps the characteristic three-shaft layout of the Rolls-Royce  Trent, with a 3.00 m (118 in) fan, an IP and HP spool. The engine has a 9.6:1 Bypass ratio and a 50:1 Pressure ratio. It is the most powerful among the Trent family. Development. By 2004 Airbus had been facing pressure from customers to develop a competitor to the Boeing 787 Dreamliner, then in October 2005 launched the A350, at the time an improved A330. Rolls-Royce initially offered a conventional bleed air engine variant of the Trent 1000 with a throttle-push to static thrust, the Trent 1700. In 2006, after a review of the Airbus A350, Rolls -Royce reached an agreement to supply all versions of the aircraft with a brand-new Trent XWB variant with of thrust. Before the December 2008 design freeze, Airbus established that the A350's empty weight was 2.2t greater than the 133.5t target. Due to this, the MTOW was increased by 3t in order to maintain the payload and range capability. As a further result, Rolls Royce announced that the nominal engine thrusts were increased slightly, each variant receiving an additional thrust. A350 programme chief Didier Evrard was quoted as saying that the change had a "very marginal