Eurojet EJ200

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The Eurojet EJ200 is a military turbofan, used as the powerplant of the Eurofighter Typhoon. The engine is largely based on the Rolls-Royce XG-40 technology demonstrator which was developed in the 1980s. The EJ200 is built by the EuroJet Turbo GmbH consortium.

Development

Rolls-Royce XG-40

Rolls-Royce began development of the XG-40 technology demonstrator engine in 1984.[1] Development costs were met by the British government (85%) and Rolls-Royce.[2]

On 2 August 1985, Italy, West Germany and the UK agreed to go ahead with the Eurofighter. The announcement of this agreement confirmed that France had chosen not to proceed as a member of the project.[3] One issue was French insistence that the aircraft be powered by the SNECMA M88, in development at the same time as the XG-40.[4]

Eurojet EJ200

An EJ200 on display.

The Eurojet consortium was formed in 1986 to co-ordinate and manage the project largely based on XG-40 technology. In common with the XG-40, the EJ200 has a three-stage fan with a high pressure ratio, five-stage low-aspect-ratio high-pressure (HP) compressor with active tip-clearance control, a combustor using advanced cooling and thermal protection, and single-stage HP and low-pressure (LP) turbines with PM discs and low-density single crystal blades."[5] A reheat (i.e., afterburner) system provides thrust augmentation. The variable area final nozzle is a convergent-divergent design.

In December 2006, Eurojet completed deliveries of the 363 EJ200s for the Tranche 1 Eurofighters. Tranche 2 aircraft require 519 EJ200s.[6] As of December 2006, Eurojet was contracted to produce a total of 1,400 engines for the Eurofighter project.[7]

HAL Tejas

In 2009, Eurojet entered a bid, in competition with General Electric’s F414, to supply a thrust vectoring variant of the EJ200 to power the HAL Tejas.

After evaluation and acceptance of the technical offer provided by both Eurojet and GE Aviation, the commercial quotes were compared in detail and GE Aviation was declared as the lower bidder. The deal will cover purchase of 99 GE F414 engines. The initial batch will be supplied by GE and the remainder will be manufactured in India under a transfer of technology arrangement.[8][9]

Variants

EJ2x0

Stage 1:

  • The EJ2x0 with 20% growth compared to the original EJ200. The EJ2x0 engine will have dry thrust increasing to some 72 kN (or 16,200 lbf) with a reheated output of around 103 kN (or 23,100 lbf).[10]

Stage 2:

  • The new engine plan to increase the output 30% more power compared to the original EJ200. The engine will have dry thrust of around 78 kN (or 17,500 lbf) with a reheated output of around 120 kN (or 27,000 lbf).[10]

Landspeed record attempt

The EJ200 Eurofighter-Typhoon jet engine is one of three engines hosted in one vehicle for a new attempt at the land speed record. The Eurofighter's jet engine delivers 90 kN of thrust that will enable the vehicle called the Bloodhound SSC to move 8 km in 100 seconds.[11]

Applications

Specifications

The compressor inlet, with both rotor and stator blades visible.
EJ200 Thrust vectoring prototype

Data from Rolls-Royce plc[12]

General characteristics

  • Type: Turbofan
  • Length: 157 inches (4.0 m)
  • Diameter: 29 inches (0.737 m)
  • Dry weight: 2,180 lbs (989 kg)

Components

  • Compressor: 3-stage LP, 5-stage HP
  • Combustors: annular
  • Turbine: 1-stage LP, 1-stage HP

Performance

See also


Comparable engines
Related lists

References

  1. ↑ Donne, Michael (1984-03-05). "Rolls to develop engine for fighters". The Times (Times Newspapers). 
  2. ↑ "Rolls Readies Demonstrator Engine For European Fighter Aircraft". Aviation Week & Space Technology (McGraw-Hill). 1986-06-23. 
  3. ↑ Lewis, Paul (1985-08-03). "3 European Countries Plan Jet Fighter Project.". The New York Times (The New York Times Company). p. 31. 
  4. ↑ Donne, Michael (1985-08-03). "Why three into one will go; Europe's new combat aircraft". Financial Times. 
  5. ↑ "Power to progress". Flight International (Reed Business Publishing). 1991-04-10. 
  6. ↑ Moxon, Julian (2007-05-01). Flight International (Reed Business Information). 
  7. ↑ "EUROJET delivers all 363 Tranche 1 Engines to schedule" (PDF) (Press release). Eurojet GmbH. 2006-12-22. Retrieved 2007-07-05. 
  8. ↑ :: Bharat-Rakshak.com - Indian Military News Headlines ::
  9. ↑ "India picks GE's F414 for Tejas MkII fighter". Retrieved 2010-10-03. 
  10. ↑ 10.0 10.1 http://typhoon.starstreak.net/Eurofighter/engines.html[]
  11. ↑ UK rocket test for 1,000mph car BBC.co.uk, 5 March 2011.
  12. ↑ "Rolls-Royce EJ200 Engine Data Fact Sheet". Rolls-Royce plc. 
  13. ↑ http://www.mtu.de/de/products_services/military_business/programs/ej200/EJ200.pdf

External links

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