Rolls-Royce Trent XWB

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Trent XWB
Trent XWB (14272089101) (2).jpg
A Trent XWB on an Qatar Airways Airbus A350-900
Type Turbofan
National origin United Kingdom
Manufacturer Rolls-Royce Holdings
First run June 14, 2010[1]
Major applications Airbus A350 XWB
Unit cost ~ $35 million (List Price)[2]
Developed from Rolls-Royce Trent 1000
Developed into Rolls-Royce Trent XWB-97

The Rolls-Royce Trent XWB is a British series of turbofan jet engines developed from the Rolls-Royce Trent 1000. It is presently used only on the Airbus A350 XWB.[3]

Design and development[edit]

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 variant of the Trent 1000 engine, with a throttle-push to 75,000 lbf (330 kN) static thrust, which was dubbed the Trent 1700. Unlike the Trent 1000, the Trent 1700 would have been a conventional bleed-air engine[4] and would have been developed in partnership with Kawasaki Heavy Industries.

After a review of the Airbus A350, Rolls-Royce reached an agreement to supply all versions of the aircraft with a brand-new engine variant, currently known as the Trent XWB.[5] This was originally announced with a static thrust range of 75,000–95,000 lbf (330–420 kN), but by September 2007 Airbus had revised their requirements down to 75,000–93,000 lbf (330–410 kN).[6] This was then revised again, 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. Unlike previous marks of Trent, the XWB features a 2-stage, rather than a single stage, IP turbine.

On 18 June 2007 Rolls-Royce announced that it had signed its biggest ever contract, with Qatar Airways, worth US$5.6 billion at list prices. This was for 80 Airbus A350 XWBs, powered by Trent XWB engines.[2] On 11 November 2007 another large contract was announced at the Dubai Airshow, with Emirates, for Trent XWBs to power 50 A350-900 and 20 A350-1000 aircraft, with a further 50 option rights. Due to be delivered from 2014, the Emirates order was potentially worth up to $8.4 billion at list prices, including options.[7] However, on 11 June 2014, Airbus announced that Emirates Airline had decided to cancel its order of 70 A350 XWB aircraft.[8]

More than 1,500 engines had been sold by July 2015 to 40 customers. Rolls-Royce offered its maintenance program to Vietnam Airlines for £340 million for 14 airplanes, or £12.1 million per engine.[9]

MDS Aero began testing the XWB engine in the Aerotest facility for Rolls Royce.

The first engine test on a static test-bed was made on 14 June 2010[10] and, on 18 February 2012, Airbus announced that the Trent XWB had successfully made its maiden flight aboard Airbus’ dedicated Airbus A380 flying test bed.[11] Certification for the early engine variants was achieved in 2013,[12] and the first engine was expected to enter service in 2014.[13] The first flight of the Trent XWB powering the Airbus A350 XWB took place on 14 June 2013.[14]

On 15 May 2014 Rolls-Royce delivered the first production 84,000 lbf (370 kN) thrust Trent XWB engines intended for the first Airbus A350 XWB to enter service with Qatar Airways.[15] Final assembly of these production engines had started in February 2014.[16] On 15 July 2014 Rolls-Royce announced the first run of the Trent XWB-97 powerplant with 97,000 lbf (430 kN) thrust for the Airbus A350-1000.[17]


Trent XWB variants[18]
Designation Certified Net Take-off Rating Net Maximum Continuous
Trent XWB-75 1 October 2010 74,200 lbf (330 kN) 66,600 lbf (296 kN)
Trent XWB-79 1 October 2010 78,900 lbf (351 kN) 71,400 lbf (318 kN)
Trent XWB-79B 1 October 2010 78,900 lbf (351 kN) 71,400 lbf (318 kN)
Trent XWB-84 1 October 2010 84,200 lbf (375 kN) 71,400 lbf (318 kN)
Trent XWB-97 97,000 lbf (430 kN)

Specifications (Trent XWB)[edit]

Data from[citation needed]

General characteristics

  • Type: Three-shaft high bypass ratio turbofan engine
  • Length: 5,218 mm (205.4 in)
  • Diameter: 2,997.2 mm (118.00 in) fan
  • Dry weight: 7,277 kg (16,043 lb)


  • Compressor: single stage LP compressor (fan), 8-stage IP compressor (IPC), 6-stage HP compressor (HPC)
  • Combustors: annular combustor with 20-off fuel spray nozzles
  • Turbine: single stage HP turbine (HPT), 2-stage IP turbine (IPT), 6-stage LP turbine (LPT)



  1. ^ "PICTURE: A350's Trent XWB engine runs for first time". 2010-06-18. Retrieved 2013-05-09. 
  2. ^ a b "Rolls-Royce inks biggest-ever sale". Flight Global. 19 June 2007. Retrieved 2007-06-20. 
  3. ^ "Trent XWB". Rolls-Royce. Retrieved 2013-05-09. 
  4. ^ Kaminski-Morrow, David (6 October 2005). "Rolls-Royce to develop Trent 1700 for A350". Flight International
  5. ^ "Farnborough: Airbus A350 powerplant race ignites as Rolls-Royce reaches agreement to supply Trent, Alliance confirms interest". Flight International]. 25 July 2006. Retrieved 2007-02-23. 
  6. ^ Flat-rated to ISA+25C
  7. ^ "Emirates places $8.4bn order for Rolls-Royce Trent XWB". Archived from the original on November 21, 2008. Retrieved 2007-11-14. 
  8. ^ "Airbus and Emirates Airline agree to cancel A350 XWB order". Airbus. Retrieved 11 June 2014. 
  9. ^ "Derby's Rolls-Royce signs £340m engine support deal with Vietnam Airlines". derby telegraph. July 29, 2015. 
  10. ^ Kaminski-Morrow, David (2010-06-18). "A350's Trent XWB engine runs for first time". Flight Global. Retrieved 2010-11-11. 
  11. ^ Perry, Dominic (2012-02-18). "Trent XWB powerplant makes maiden sortie". Flight Global. Retrieved 2012-02-18. 
  12. ^ "Trent XWB achieves important milestone with award of EASA type certification". Rolls-Royce. Retrieved 2013-05-09. 
  13. ^ "Airbus advances towards first flight of A350 twinjet". 2012-10-23. Retrieved 2013-05-09. 
  14. ^ "World's most fuel efficient engine powers first flight". Rolls-Royce. 14 June 2013. 
  15. ^ "Rolls-Royce dispatches first Trent XWB for entry into service". Rolls-Royce. 15 May 2014. 
  16. ^ "started final assembly of the first production Trent XWB". Rolls-Royce. 10 February 2014. 
  17. ^ "Higher-thrust Rolls-Royce Trent XWB engine runs for first time". Rolls-Royce. 15 July 2014. 
  18. ^ "Type-Certificate Data Sheet Trent XWB series engines" (pdf). European Aviation Safety Agency. 20 April 2016. Retrieved 20 January 2017.