Trent XWB
| Trent XWB | |
|---|---|
_(2).jpg) |
|
| A Trent XWB on a Qatar Airways Airbus A350-900 | |
| Type | Turbofan |
| National origin | United Kingdom |
| Manufacturer | Rolls-Royce Holdings |
| First run | 14 June 2010 |
| Major applications | Airbus A350 XWB |
| Program cost | US$12 billion |
| Unit cost | ~ $35 million (List Price) |
| Developed from | Rolls-Royce Trent 1000 |
The Rolls-Royce Trent XWB is a British series of turbofan jet engines developed from the Rolls-Royce Trent 1000, exclusively powering the Airbus A350 XWB. It passed one-million flight hours in October 2017 without any in-flight disruptions and with a dispatch reliability of 99.4%. By February 2018, it has completed 1.3 million flight hours with a 99.9% dispatch reliability.
By 2004 Airbus had been facing pressure from customers to develop a competitor to the Boeing 787 Dreamliner, then in October 2005 formally launched a new aircraft designated the Airbus A350. Rolls-Royce initially offered a conventional bleed air engine variant of the Trent 1000 with a throttle-push to 75,000 lbf (330 kN) static thrust, the Trent 1700. It would have been developed in partnership with Kawasaki Heavy Industries.
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 75,000 to 95,000 lbf (330 to 420 kN) of thrust. By September 2007 Airbus had revised their requirements down to 75,000–93,000 lbf (330–410 kN).
In the December 2008 design freeze, as the A350 weight empty is 2.2t greater than the 113.5t target, its MTOW was increased by 3t to maintain the payload/range capability, then in 2009 the Trent XWB thrust was increased by 1,000lb (4.5kN) to 84,000 lbf (374 kN) for the -900 and 93,000 lbf (414 kN) for the -1000 with a "very marginal" impact on fuel burn, the second thrust adjustment since thrust was raised by 1,000 to 4,000 lbf (4.4 to 17.8 kN) in 2007.
This was then revised again in 2011, and the engines for the largest A350 have been uprated to 97,000 lbf (430 kN) to meet new performance requirements, and better compete with the Boeing 777-300ER.
The first engine test on a static test-bed was made on 14 June 2010. On 18 February 2012, Airbus announced that the Trent XWB had successfully made its maiden flight aboard Airbus’ dedicated Airbus A380 flying test bed. Certification for the early engine variants was achieved in 2013. The first engine was expected to enter service in 2014. The first flight of the Trent XWB powering the Airbus A350 XWB took place on 14 June 2013.
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