EJ200 | |
---|---|
EJ200 on static display | |
Type | Turbofan |
Manufacturer | EuroJet Turbo GmbH |
First run | 1991 |
Major applications | Eurofighter Typhoon |
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
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 HP compressor with active tip-clearance control, a combustor using advanced cooling and thermal protection, and single-stage HP and 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. Unusual for an advanced military turbofan, the fan lacks variable camber inlet guide vanes.
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]
Variants
EJ2x0 Stage-1:-
- The EJ2x0 with 20% growth compared to the original EJ200. The EJ2x0 engine will have dry thrust increasing to some 72kN (or 16,200lbf ) with a reheated output of around 103kN (or 23,100lbf).[8]
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 78kN (or 17,500lbf) with a reheated output of around 120kN (or 27,000lbf). [9]
Applications
Specifications
Data from Rolls-Royce plc[10]
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
- Turbine: 1-stage LP, 1-stage HP
Performance
- Maximum thrust: 13,500 lbf (60 kN) dry thrust / 20,000 lbf (90 kN) with reheat
Bypass ratio: 0.4:1
- Overall pressure ratio: 26:1
- Specific fuel consumption: 21-23 g/kNs dry thrust / 47-49 g/kNs with reheat
- Thrust-to-weight ratio: 9.175:1
See also
Comparable engines
Related lists
References
- ^ Donne, Michael (1984-03-05). "Rolls to develop engine for fighters". The Times. Times Newspapers.
{{cite news}}
:|access-date=
requires|url=
(help) - ^ "Rolls Readies Demonstrator Engine For European Fighter Aircraft". Aviation Week & Space Technology. McGraw-Hill. 1986-06-23.
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:|access-date=
requires|url=
(help) - ^ Lewis, Paul (1985-08-03). "3 European Countries Plan Jet Fighter Project". The New York Times. The New York Times Company. p. 31.
{{cite news}}
:|access-date=
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(help) - ^ Donne, Michael (1985-08-03). "Why three into one will go; Europe's new combat aircraft". Financial Times.
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(help) - ^ "Power to progress". Flight International. Reed Business Publishing. 1991-04-10.
{{cite news}}
:|access-date=
requires|url=
(help) - ^ Moxon, Julian (2007-05-01). Flight International. Reed Business Information.
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(help); Missing or empty|title=
(help) - ^ "EUROJET delivers all 363 Tranche 1 Engines to schedule" (PDF) (Press release). Eurojet GmbH. 2006-12-22. Retrieved 2007-07-05.
- ^ http://typhoon.starstreak.net/Eurofighter/engines.html
- ^ http://typhoon.starstreak.net/Eurofighter/engines.html
- ^ "Rolls-Royce EJ200 Engine Data Fact Sheet" (PDF). Rolls-Royce plc.