Wikipedia

Rolls-Royce Trent 700

TheRolls-Royce Trent 700is ahigh-bypass turbofanaircraft engine produced byRolls-Royce plcto power theAirbus A330.Rolls-Royce was studying aRB211development for the A330 at its launch in June 1987. It was first selected byCathay Pacificin April 1989, first ran in summer 1992,[1]was certified in January 1994[3]and was put into service on 24 March 1995. Keeping the characteristicthree-shaftarchitecture of the RB211, it is the first variant of theTrentfamily. With its 97.4 in (247 cm) fan for a 5:1bypass ratio,it produces 300.3–316.3 kN (67,500–71,100 lbf) ofthrust[3]and reaches anoverall pressure ratioof 36:1.[2] It competes with theGeneral Electric CF6-80E1 and thePW4000to power the A330.

Trent 700
TheAirbus A330's nacelle features a common nozzle assembly
Type Turbofan
National origin United Kingdom
Manufacturer Rolls-Royce
First run August 1992[1]
Major applications Airbus A330
Airbus Beluga XL
Airbus A330 MRTT
Developed from Rolls-Royce RB211
Developed into Trent 800
The 97.4 in (247 cm) fan with 26 blades gives a 5:1bypass ratio[2]

Development

edit

WhenAirbuslaunched itsA330twin-jet in June 1987, its only engine options included theGeneral Electric CF6-80C2 and thePratt & Whitney PW4000.[4]Rolls-Roycewas studying whether to launch aRB211-700,65,000 lbf (290 kN) development of theRB211for the A330, the long-rangeBoeing 767andMcDonnell Douglas MD-11,derived from theBoeing 747-400's -524D4D, with growth potential to 70,000 lbf (310 kN).[5]By June 1988, Rolls-Royce was investing over $540 million to develop the upratedRB-211-524Lwith a new 95 in (240 cm) fan up from 86 in (220 cm) for the -524G/H and a fourth LP turbine stage up from three, targeting 65,000 to 70,000 lbf (290 to 310 kN).[6]

In April 1989,Cathay Pacificordered ten A330s, powered by 65,000 lbf (290 kN) RB211-524L engines and with room to grow to 80,000 lbf (360 kN), a first for Rolls-Royce on an Airbus aircraft.[7]In June 1989,TWAconfirmed an order for twenty A330s and selected theRB211-524L Trentengine for $620 million (15.5 million each), rated for 74,000 lbf (330 kN).[8]

By February 1992, design work was completed for the 97.4 in (247 cm) fan, 67,000–72,000 lbf (300–320 kN)Trent 700and the first test was scheduled for July.[9]By then, the earlier 94.6 in (240 cm) fan, 65,000–67,000 lbf (290–300 kN) Trent 600 for the MD-11 was abandoned due to lack of customers.[9]By September, the first engine was running and was to be joined by five others by the end of the year.[1]Certification was applied for on 30 June 1991 and was granted on 24 January 1994.[3]The first Trent 700-powered A330 flew in August 1994, and Cathay Pacific introduced it in March 1995.[10]90-minutesETOPSapproval was achieved in March 1995, and this was extended to 120 minutes in December 1995 and 180 minutes in May 1996.[11]The Trent 700 was the third engine to market on the A330, after GE and PW.

Design

edit

The Trent 700 is anaxial flow,high bypass turbofanwiththree coaxial shafts.The fan has 26 Wide Chord Blades and is powered by a 4-stage low pressureturbine.The 8-stage IP compressor and 6-stage HP compressor are both driven by a single stage turbine, and the singleannular combustorhas 24 Spray Nozzles. The engine is controlled by anEEC.[3]

Operational history

edit

By July 1999, the Trent had secured a nearly 40% share of engine orders for the A330.[12]

In 2009, Rolls-Royce introduced an upgraded version of the engine dubbed the Trent 700EP (enhanced performance) which incorporated a package of improvements derived from later members of the Trent engine family (especially the Trent 1000). These included elliptical leading edges and optimised fan and high-pressure turbine tip clearances.[13]Together the improvements provided a 1.2% improvement to the Trent 700's specific fuel consumption. Some of the improvements were also made available as a retro-fit kit to existing airlines.[14]

Further upgrades were announced in 2013 as part of the T700EP2 package (EIS in late 2016[10]). The upgraded engine was to be available in 2015, intended for higher gross weight A330s. The upgrade package was to improvefuel efficiencyby about 1% and was likely to be the last upgrade of Trent 700. It was also potentially to be made available as a retrofit package in the future.[15]

Rolls-Royce claims that the Trent 700 has the lowest life cycle fuel burn, and is the quietest and cleanest engine available on the A330.[16]Cathay Pacific is the largest operator, with 31 Trent 700-powered A330s. Rolls received orders for 140 of the type during the Paris Air Show in June 2007.

By July 2018, the Trent 700 had flown 50 million hours[17]and Rolls-Royce claimed a 60% market share.[10]By June 2019, anAeroflotAirbus A330-343's Trent 700 engine which had entered service in 2008 had completed over 50,000 hours without requiring an overhaul – a record for a widebody engine.[18]

Applications

edit

Variants

edit
Trent 768-60
Certified in January 1994, rated at 67,500 lbf (300 kN) for take-off.[3]Used on the Airbus A330-341 variant.
Trent 772-60
Certified in March 1994, rated at 71,100 lbf (316 kN) for take-off.[3]Used on the Airbus A330-342 variant.
Trent 772B-60
Certified in September 1997, rated at 71,100 lbf (316 kN) for take-off, produces additional thrust compared to the 772-60 between 610m (2,000ft) and 2440m (8,000ft).[3]Used on the Airbus A330-243 and Airbus A330-343 variants.
Trent 772C-60
Certified in March 2006, rated at 71,100 lbf (316 kN) for take-off, produces additional thrust compared to the 772B-60 above 2440m (8,000ft).[3]Used on the Airbus A330-243 and Airbus A330-343 variants.

Specifications (Trent 700)

edit

Data fromEASA[3]

General characteristics

Components

  • Compressor:Single-stage fan with 26 wide-chord blades, eight-stage IPcompressor,six-stage HP compressor
  • Combustors:Singleannular,24-off Fuel Spray Nozzles
  • Turbine:Single-stage HP turbine, single-stage IP turbine, four-stage LP turbine

Performance

See also

edit

Related development

Comparable engines

Related lists

References

edit

Notes

edit
  1. ^abc"Rolls ties global strategy to Trent engine family".Aviation Week.14 September 1992. p. 72.Archivedfrom the original on 17 July 2017.Retrieved25 October2019.
  2. ^abcde"Trent 700 poster".Rolls-Royce.Archivedfrom the original on 24 February 2016.Retrieved28 July2016.
  3. ^abcdefghi"Type-Certificate Data Sheet RB211 Trent 700 series engines"(PDF).EASA. 21 February 2019.
  4. ^"German Government Commits Funds To Airbus A330/A340 Development".Aviation Week.8 June 1987. p. 35.
  5. ^"Rolls Examines Development of Rb211-700 Engine for Future Twinjet Aircraft".Aviation Week.8 June 1987. p. 23.Archivedfrom the original on 15 March 2022.Retrieved25 October2019.
  6. ^"Rolls-Royce Will Invest $540 Million In Developing Uprated RB211 Version".Aviation Week.20 June 1988. p. 30.Archivedfrom the original on 15 March 2022.Retrieved25 October2019.
  7. ^"Rolls-Royce Gains Access to Airbus Market With Cathay Pacific Engine Order".Aviation Week.10 April 1989. p. 91.Archivedfrom the original on 1 July 2017.Retrieved25 October2019.
  8. ^"TWA Confirms Orders for 20 A330s, Selects Rolls Engine".Aviation Week.26 June 1989. p. 91.Archivedfrom the original on 15 March 2022.Retrieved25 October2019.
  9. ^ab"Rolls-Royce Completes Design Work On Trent 700 Engine for A330, MD-12".Aviation Week.17 February 1992. p. 67.
  10. ^abc"Trent 700 Market".Rolls-Royce.Archivedfrom the original on 4 June 2016.Retrieved28 July2016.
  11. ^"Aero-Engines—Rolls-Royce Trent".Jane's.13 February 2001. Archived fromthe originalon 10 November 2007.
  12. ^Harrison, Michael (8 July 1999)."Blow to Rolls as Boeing picks US rival".The Independent.Archivedfrom the original on 30 October 2019.Retrieved30 October2019.
  13. ^"DUBAI: R-R hands over 1,000th Trent 700 for A330".Flightglobal.13 November 2011.Archivedfrom the original on 26 August 2017.Retrieved26 January2012.
  14. ^"EP new build improvements".Aviation Week.28 March 2009. Archived fromthe originalon 28 March 2020.Retrieved26 January2012.
  15. ^Goold, Ian (18 June 2013)."Rolls-Royce Trent 700 Benefits From Technology Development Flow-Back".AINonline.Archivedfrom the original on 18 May 2014.Retrieved4 April2014.
  16. ^"Trent 700 Technology".Rolls-Royce.Archivedfrom the original on 13 November 2020.Retrieved27 September2019.
  17. ^"Rolls-Royce Trent 7000 gets ticket to fly as first production engines arrive in Toulouse"(Press release). Rolls-Royce. 20 July 2018.Archivedfrom the original on 27 September 2007.Retrieved21 July2018.
  18. ^"Rolls-Royce and Aeroflot celebrate engine record"(Press release). Rolls-Royce. 19 June 2019.Archivedfrom the original on 23 December 2022.Retrieved26 June2019.
  19. ^IBA Group Limited (March 2020).Engine values book(PDF).p. 7.24.Archived(PDF)from the original on 17 May 2021.Retrieved17 May2021.
edit
Wikimedia Commons has media related toRolls-Royce Trent 700.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Rolls-Royce_Trent_700&oldid=1268556416"