March 2000, the European Commission launched its largest-ever aero-engine
research programme, costing a total of
101 million. The purpose of the Efficient and Environmentally Friendly
Aero Engine (EEFAE) project is to develop the advanced technology needed
to maintain European industry's competitive position as a supplier of
advanced turbofan engines for next generation of commercial jet aircraft.
a technology platform that integrates previously funded research programmes
within a broad, future-oriented industry strategy. Its objective is to
achieve a step change in both the efficiency and environmental friendliness
of gas-turbine-based aero engines, so that customers and operators worldwide
can benefit from cleaner, quieter, safer and more economical travel in
the new millennium.
CO2 emissions through reduced fuel burn and reducing
NOx levels will deliver a major contribution to long-term environmental
protection. Additional goals include lowering life cycle costs by 30%
and improving reliability by 60%.
EEFAE, the aim is to develop engine concepts for both wide- and
narrow-bodied aircraft, and to halve the time needed to bring the
new technologies to market. Engines based on the new technologies
are expected to begin entering commercial service from 2008 to 2015.
work stems from a co-operative effort started in 1998 by members
of the European Engine Industry Management Group, a forum of leading
engineering companies that meets regularly to exchange views and
share research results. The new initiative involves 19 partners
from nine countries with overall co-ordination by Rolls-Royce.
Two of the partners are universities, which are fully supported
by the EC, while the remainder are research establishments and industrial
companies participating on a shared cost basis.
to medium term application
will lead the short to medium term development. Known as the ANTLE
(Affordable Near Term Low Emissions) engine, this is based on an
advanced three-shaft unit incorporating a smaller number of higher
efficiency components than at present.
new elements will be a high-pressure compressor and intermediate-
and low-pressure turbines. Further innovations will include a low-cost
turbine rear frame, revised lubrication system and distributed engine
controls. The project will also incorporate a new HP turbine and
dual annular combustor currently under development in the UK.
Germany is responsible for the high-pressure (HP) compressor, while
will deliver the intermediate-pressure turbine and
Industria de Turbo Propulsores (ITP) in Spain takes the lead
for the low-pressure turbine. Other participants include Eldim,
Hispano-Suiza, Howmet, Spain's INTA institute, Lucas, Calidus of
the UK, Techspace Aero and Volvo Aero. Also involved in the ANTLE
project are the universitiesof Florence in Italy and Luleå
of Sweden. The partners' targets are a reduction of at least 10%
in CO2 emissions and 60% in NOx by 2008.
to long term application
narrow-body group CLEAN (Component vaLidator for Environmentally
friendly Aero eNgine), headed by Snecma
Moteurs from France and DaimlerChrysler Aerospace affiliate
MTU, also includes
several of the ANTLE members. Eldim, Fiat, Techspace Aero and Volvo
are joined by ESIL of Ireland and the institute CEPR in what will
be a longer-term approach involving heat exchanger know-how that
has so far been little used in aero engine construction. The goal
is to validate in CLEAN some core technologies for a future Intercooled
Recuperated Aero-engine (IRA) concept, which is capable of significantly
reducing fuel consumption and emissions.
will incorporate an improved, high efficiency HP compressor with
active surge control, a low emissions axially staged combustor and
high temperature HP turbine from Snecma. FiatAvio will support the
design and manufacture of the combustor module. A new structural
inter-turbine frame and a two/three-stage low pressure (LP) turbine
will be provided by MTU. A low-cost turbine exhaust rear frame will
be designed by Volvo. A new heat exchanger segment will be located
in the LP turbine exhaust stream. The latter addition, derived from
an MTU design, will decrease the fuel burn and substantially reduce
the CO2 output.
the goal is to cut emissions by 20% for CO2 and a remarkable 80%
for NOx. However, because of the considerable technical challenges
to be faced, flight testing of a future IRA engine is unlikely to
take place until 2015, while commercial service will not commence
before 2020. The CLEAN engine will nevertheless be tested on a rig
at the CEPR centre in Saclay, France, from mid-2003.
and public benefits
aero-engine industry currently employs 77,000 people, with many
other jobs dependent on its success. The four-year EEFAE
project will enable manufacturers to acquire the advanced technology
necessary to consolidate their market share in a business now worth
10 billion and forecast to treble over the next 20 years. This will
encourage the development and growth of new and existing SMEs. At
the same time, reduced emissions will facilitate sustainable growth
and increase opportunities for more recreational air travel and
an improved quality of leisure time for citizens in Europe and around
Efficient and Environmentally Friendly Aero Engine (EEFAE) technology
platform is funded through the New perspectives
in aeronautics key action and has 15 partners from nine countries.
It involves two projects:
- the Affordable Near Term Low Emissions engine; and
- the Component vaLidator for Environmentally friendly Aero eNgine.
A number of fundamental technology projects will complement the