The EJ200 Project

EUROJET Turbo GmbH (EUROJET), is the management

company responsible for the EJ200 engine system,

installed in the Eurofighter Typhoon aircraft, and is

the point of contact for all EJ200 project activities. A

leading military aerospace engine consortium in Europe,

EUROJET’s shareholders comprise Avio (Italy), ITP (Spain),

MTU Aero Engines (Germany) and Rolls-Royce (UK). The

company’s responsibilities include the management of

development, support and export of the new generation

EJ200 powerplant and it operates out of its headquarters

in Hallbergmoos, Germany (near Munich airport).

EUROJET, together with Eurofighter Jagdflugzeug

GmbH (Eurofighter), which is responsible for managing

the development and production of the complete

Eurofighter Typhoon weapon system, are the industrial

contractual partners

Contents

Company Profile » 3

Programme History » 5

Project Organisation » 7

Technical Data » 9

Operational Benefits » 10

Technological Features » 12

EJ200—Presence and Future » 24

2 3

Company profile

of the four partner nations (Italy,

Germany, Spain and the UK).

These four nations established

NETMA (the NATO Eurofighter

and Tornado Management

Agency) under the NATO charter

as a single interface for the core

customers.

The EJ200 programme, together

with the Eurofighter Typhoon

programme, represents about

100,000 direct and indirect jobs

across Europe involving over

400 companies. This constitutes

Europe’s largest industrial

programme representing a

direct commitment by partner

nations and companies for

investment in sustainable

technology and furthering of

the industrial potential of the

European aerospace industry.

54

programme History

pa r t n e r s H i p H e r i tag e

The origin of the EUROJET partnership lies

in the collaboration of three European

companies, Rolls-Royce, MTU Aero Engines

and Avio, in the development and production

of the RB199 engine for the Tornado aircraft.

The success of this earlier partnership, with

a total fleet of more than 950 aircraft and

approximately 6 million engine flying hours

achieved, paved the way for future European

collaboration programmes.

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Company profile

Like the Eurofighter Typhoon, the EJ200 engine is

assembled in four different assembly lines, located

in each of the partner nations. The workshare reflects

the number of aircraft, and the associated number of

engines, ordered by the respective industrial partner.

The distribution, as indicated below, makes best use of

each partner company’s expertise and technology:

Low pressure (LP) turbine, reheat

system, gearbox and air/oil system

Exhaust nozzle, jet pipe, exhaust

diffuser, by-pass duct and external

dressings

Low pressure (LP) and high

pressure (HP) compressors and

DECMU (Digital Engine Control and

Monitoring Unit)

Combustion system, high

pressure (HP) turbine and engine

health monitoring system (EHMS)

76

e J 200 p r o g r a m m e

The EJ200 programme began in 1983 with what was

then called the European Fighter Aircraft (later to

become the Eurofighter Typhoon) project. In 1988, the

governments of Italy, Germany, Spain and the United

Kingdom authorized formal development contracts for

the aircraft’s systems, including the EJ200 engines.

proJeCt organisationprogramme History

Madrid

Bristol

Brindisi

Torino

Munich

Bilbao

33%

33%

21%

13%

Type Twin Spool Turbofan

with afterburner

Launch application Eurofighter Typhoon

(2 EJ200 engines)

Thrust 90 kN (20,000 lbf )

with reheat

60 kN (13,500 lbf )

without reheat

Bypass ratio 0.4 : 1

Pressure ratio 26 : 1

Specific fuel consumption 47–49 g/kNs

with reheat

21–23 g/kNs

without reheat

Airflow 75–77 kg/s

Compressor stages 3 LP, 5 HP

Turbine stages 1 HP, 1 LP

Combustion system Annular Airspray

Weight ca. 1,000 kg

Length 4 m

e U r o J e t i n d U s t r i e s

8 9

proJeCt organisation teCHniCal data

Next generation »

technology

High performance »

High operational »

availability

Power for multi-role »

capability

High thrust-to-weight »

ratio

High reliability levels »

Low cost of ownership »

r e l i a b i l i t y

Low engine removal rate at < 1/1000 engine flying »

hours (EFH)

Mean Time Between Defects Core Engine ( » MTBD) >

1,000 EFH

m a i n ta i n a b i l i t y

Modular construction – quick engine recovery »

Advanced on-condition maintenance »

Easy access to LRI’s »

Engine replacement time < 45 minutes »

Extensive boroscope access »

s U p p o r ta b i l i t y

Use of common hand tools »

Low level of training required »

Low direct maintenance man-hours per engine flying »

hour

Engines are interchangeable »

e n g i n e H e a lt H m o n i to r i n g

Fully integrated with Digital Control System »

Continuous engine health monitoring and event »

reporting

1110

operational benefitsoperational benefits

LOw PrEssurE COmPrEssOr

HigH PrEssurE COmPrEssOr

DECmu

gEarBOx anD OiL sysTEm

COmBusTiOn sysTEm

rEHEaT sysTEm

VariaBLE ExHausT nOzzLE

LOw PrEssurE TurBinE

HigH PrEssurE TurBinE

12 13

teCHnologiCal featUres

lo w p r e s s U r e Co m p r e s s o r

The LP compressor is a 3-stage, FOD-tolerant axial

flow unit with a very high pressure ratio (4.2 : 1). It is an

all-blisk (integrally bladed disc) design featuring wide

chord aerofoils attached by advanced linear friction

welding techniques and operates without the need for

inlet guide vanes.

H i g H p r e s s U r e Co m p r e s s o r

The axial flow HP compressor consists of 5 stages, deliv-

ering a pressure increase of 6.2 : 1 [overall the EJ200

compression system delivers 26 : 1 in only 8 stages]

with a high surge margin and only 1 set of variable inlet

guide vanes.

14 15

teCHnologiCal featUres teCHnologiCal featUres

H i g H p r e s s U r e t U r b i n e

The HP turbine is a single-stage, shroudless design using

3-D, single-crystal, nickel alloy aerofoils with advanced

internal and film cooling, ensuring long life, low blade

numbers and high levels of performance. Tip clearance

control is also employed to maintain efficiency. Turbine

blade temperature is measured using an optical

pyrometer, which is linked to the digital engine control

and monitoring unit (DECMU). Plasma-sprayed thermal

barrier coatings are used on liners and vanes.

Co m b U s t i o n

s ys t e m

The annular combustor

is a very compact

design employing latest

technology features

to achieve extremely

demanding requirements in

terms of emissions (zero visible

smoke), combustion stability / handling, efficiency and

life. Features include advanced air spray fuel injectors

with preferential fuelling, film cooling & thermal barrier

coating and fuel boroscope access.

16 17

teCHnologiCal featUres teCHnologiCal featUres

r e H e at s ys t e m

The advanced-staged afterburner system uses radial

burners and primary vaporisers in the hot stream

and fuel injection in the cold stream to give very high

combustion efficiency over the operational range. The

three burners are independently supplied with fuel,

giving continuous and smooth modulation between

minimum and maximum reheat. The design achieves

smooth selection, low smoke and maximum thrust

boost whilst minimizing instabilities.

lo w p r e s s U r e t U r b i n e

The LP turbine is a single-stage shrouded design

chosen for its high efficiency and performance

retention characteristics. Single-crystal, cooled

turbine blades are used in the turbine rotor

and thermal barrier coatings are used on static

components (vanes). As with the HP turbine,

this unit represents a step change from previous

designs.

18 19

teCHnologiCal featUres teCHnologiCal featUres

b r U s H s e a l s

Extensive use of brush seals is made throughout the

engine; these have advantages in terms of reduced

leakage, mass, lower heat transfer to oil and improved

supportability.

g e a r b ox a n d o i l s ys t e m

The EJ200 features an external wrap-around gearbox,

positioned on the underside of the engine for acces-

sibility, and a fully aerobatic, self-contained oil system

with automatic oil debris monitoring. The oil tank is

mounted on the front left side of the gearbox and

contains a rotating basket which generates an artificial

gravitational force thus ensuring a supply of oil to the

pump even under the most extreme flight conditions.

20 21

teCHnologiCal featUres teCHnologiCal featUres

d e C m U

The full authority Digital Engine Control and Monitoring

Unit is engine-mounted for accessibility and is a

twin-lane, fault-tolerant system linked to the aircraft

flight control system. It constantly monitors the

functional status of the engine and allows precise,

responsive and safe control at all times. The engine

health monitoring system includes features such as

individual component life usage, continuous vibration

and oil debris monitoring and event reporting. The

whole engine is designed for on-condition mainte-

nance and low life-cycle costs, which is supported by

this technology.

Va r i a b l e

e x H aU s t n o z z l e

The EJ200 features a con ver-

gent-divergent variable exhaust

nozzle, optimized for multi-

mission, subsonic and supersonic

performance. The nozzle position

is controlled by the DECMU and

adjusted (modu lated) constantly

throughout the dry and wet

range of operation.

2322

teCHnologiCal featUres teCHnologiCal featUres

2524

In offering a unique product that applies world-leading

technology to the customers’ needs, EUROJET is able to

deliver the very best in engine production. The EJ200

engine has an unprecedented performance record

combined with multi-role capability, highest availability

and low life-cycle costs.

eJ200—presenCe and fUtUre

More than 1,500 EJ200 engines, employed in the

Eurofighter Typhoon, are currently on contract to six

nations: in addition to the four partner nations, the

first export customers are Austria and the Kingdom of

Saudi Arabia. Eurofighter Typhoon is the world’s best-

selling, new-generation, multi-role combat aircraft with

707 aircraft currently under contract. The outstanding

capabilities of the Eurofighter Typhoon aircraft and its

driving force, the EJ200, have raised the interest of many

other nations. Together with its partners, EUROJET is

actively supporting further export campaigns.

e J 200 – t H e e n g i n e o f C H o i C e f o r

s i n g l e o r t w i n a p p l i C at i o n s .

EJ200 – The Power Behind Eurofighter Typhoon

www.eurojet.eu

EJ200 – BEnCHmarK FOr ExCELLEnCE

eUroJet turbo gmbHLilienthalstraße 2 b 85399 Hallbergmoos germany

Phone: +49 8 11 55 05–0Fax: +49 8 11 55 05 –139

E-mail: EJ200@eurojet.deweb: www.eurojet.eu