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The Eurojet EJ200 is a military low-bypass 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. The EJ200 is also used in the Bloodhound LSR supersonic land speed record attempting car.

EJ200
EJ200 on static display
Type	Turbofan
National origin	Multinational
Manufacturer	EuroJet Turbo GmbH
First run	1991
Major applications	Eurofighter Typhoon

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 high-pressure (HP) compressor, a combustor using advanced cooling and thermal protection, and single-stage HP and LP turbines with powder metallurgy discs and single crystal blades. A reheat system (afterburner) 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.[5] As of December  2006^[update], Eurojet was contracted to produce a total of 1,400 engines for the Eurofighter project.[6]

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 Mk2 after both the indigenous Kaveri engine and the General Electric F404 used in prototypes and early production models proved to have insufficient performance. After evaluation and acceptance of the technical offer provided by both Eurojet and GE Aviation, the IAF preferred the EJ200 as it lighter and more compact[7] but after the commercial quotes were compared in detail GE Aviation was declared as the lowest bidder.[8][9] A second consideration by HAL was industrial offsets, if local Eurojet engine production was set up for the Tejas it would make future Eurofighter aircraft bids to India cheaper and more competitive with the Tejas whereas it was assumed the US would not allow aircraft using the engine to be sold to India, however Oct 2020 Boeing offered to sell F-18 aircraft to the Indian Navy.[10]

TAI TFX

On 20 January 2015 ASELSAN of Turkey and Eurojet Turbo GmbH signed a Memorandum of Understanding to collaborate on the EJ200 military turbofan engine programme.[11][12] It is envisaged that the collaboration would produce a derivative of the EJ200 with thrust vectoring for use in Turkey's TFX 5th generation air superiority fighter programme. Eurojet EJ200 is not selected for TFX program. TFX will use General Electric F110 engine until indigenous manufactured by TRMOTOR.[13]

Landspeed record attempt

An EJ200 engine, together with a rocket engine, will power the Bloodhound LSR for an attempt at the land speed record. The target speed is at least 1000 mph.[14]

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).[15]

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).[15]

Applications

• Eurofighter Typhoon
• Bloodhound LSR

Specifications (EJ200)

Data from Rolls-Royce plc[16]

General characteristics

• Type: Afterburning turbofan
• Length: 398.78 cm (157.00 in)
• Diameter: 73.66 cm (29.00 in)
• Dry weight: 988.83 kg (2,180.0 lb)

Components

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

Performance

• Maximum thrust: 60 kN (13,500 lbf) and 90 kN (20,200 lbf) (with afterburner)
• Overall pressure ratio: 26:1
• Bypass ratio: 0.4:1
• Air mass flow: 75–77 kg/s (9,900–10,200 lb/min)
• Turbine inlet temperature: 1,800 K (1,530 °C)
• Fuel consumption: 4,536–4,968 kg/h (10,000–10,950 lb/h) and 15,228–15,876 kg/h (33,570–35,000 lb/h) (with afterburner)
• Specific fuel consumption: 21–23 g/(kN⋅s) (0.74–0.81 lb/(lbf⋅h)) and 47–49 g/(kN⋅s) (1.66–1.73 lb/(lbf⋅h)) (with afterburner)
• Thrust-to-weight ratio: 6.11:1 and 9.17:1 (with afterburner)

See also

Comparable engines

• General Electric F414
• Guizhou WS-13
• Klimov RD-33
• Snecma M88

Related lists

• List of aircraft engines

References

Notes

Footnotes

External links

• Eurojet GmbH
• Rolls-Royce EJ200
• EJ200 fact sheet
• EUROJET Offers its EJ200 Engine for the Tejas, Indian Light Combat Aircraft

На других языках

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[de] Eurojet EJ200

Das Eurojet EJ200 ist ein Turbofantriebwerk des europäischen Herstellerkonsortiums Eurojet Turbo GmbH. Das Triebwerk basiert auf dem britischen XG-40 und erlaubt dem Eurofighter Typhoon, dauerhaft im Überschall zu manövrieren. Zu diesem Zweck wurde der Trockenschub (Maß für den Schub eines Triebwerks ohne zugeschalteten Nachbrenner) gegenüber dem Turbo-Union RB199 bei gleichen Abmessungen wesentlich gesteigert. Eine weitere Zielsetzung waren geringe Lebenszykluskosten. Dafür wurde auf die traditionelle Methode der Wartungsintervalle verzichtet und stattdessen eine moderne Triebwerksüberwachungseinheit (englisch Engine Monitoring Unit, kurz EMU) eingebaut, um die Einsatzdauer ohne Sicherheitseinbußen verdoppeln zu können.

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- [en] Eurojet EJ200

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[es] Eurojet EJ200

El Eurojet EJ200 es un turbofán militar usado como motorización del Eurofighter Typhoon. El motor se basa en el demostrador tecnológico Rolls-Royce XG-40 desarrollado en los años 1980.

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[fr] Eurojet EJ200

L'Eurojet EJ200 est un turboréacteur militaire.

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[it] Eurojet EJ200

L'Eurojet EJ200 è un motore aeronautico militare turboventola, sviluppato in Europa a partire dalla fine degli anni ottanta dal consorzio EUROJET Turbo GmbH ed installato sul caccia Eurofighter Typhoon.

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