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systems approach is the one that we
will continue to take in order to meet the
challenges of the future: air traffic control
concepts will be founded on 揼ate-togate?
trajectories and the networking and
interoperability of onboard and ground
systems will be essential.
Perhaps we could look more specifically
at what is set to be achieved
within the framework of Clean Sky,
the largest European research project
ever. In essence, it will help to meet
the 2020 environmental goals set by
ACARE (Advisory Council for Aeronautics
Research in Europe) of a 50% reduction
in CO2 emissions, an 80% reduction in
NOx (nitrogen oxides) emissions, a 50%
reduction in external perceived noise and
a green product life cycle (these reductions
use 2000 as the baseline).
The Clean Sky initiative has been built
around six technology areas known as
Integrated Technology Demonstrators
(ITDs). Companies involved with Clean
Sky will design, build and test technological
solutions to help industry develop
innovative, more environmentally friendly
aviation systems.
One such ITD is the 揝ystems for Green
Operations ITD ? where we address two
different sets of systems in different and
complementary ways:
n the systems related to the management
of trajectory and mission;
n the electrical systems onboard the
aircraft.
This means finding ways to manage
aircraft energy and aircraft trajectory and
mission so as to help achieve environmental
objectives such as:
n Efficient aircraft trajectories (ground
and air).
n Approach optimisation (Continuous
Descent Arrival ?10% less fuel, 40%
less noise?.
n Optimisation of gates and runways.
n Global interoperability.
By managing both energy and trajectory,
it is possible to cut down the level
of fuel required by an aircraft to complete
a given mission and therefore reduce
waste, while at the same time providing
for aircraft flexibility.
For electrical systems, the core of the
issue lies within the redesign of the whole
chain of generation, distribution, management
and consumption of electrical energy
on board the aircraft, to improve its overall
efficiency. The underlying concept is the
揳ll-electrical aircraft? in which everything
(or hydraulic and pneumatic devices)
would be replaced by electrical systems.
The principal goal being to reduce overall
fuel consumption by making efficient use
of the energy produced and consumed
onboard the aircraft.
We also have a set of evaluation tools
at a European level, which will enable
us to assess and evaluate the environmental
impact of the technologies
created within each ITD. The 揟echnology
Evaluator?occupies a central position
within Clean Sky and holds a budget of
$31 million, 2% of the overall Clean Sky
budget. Made up of 17 members, the
揟echnology Evaluator?includes representatives
from the 12 ITD leaders in addi-
ACARE抯 2020
environmental goals:
n a 50% reduction in CO2
emissions;
n an 80% reduction in NOx
emissions;
n a 50% reduction in external
perceived noise and a
green product life cycle.
26
Interview
tion to universities and members of the
research community from across Europe.
It will carry out the vital role of analysing
and evaluating the design results of each
ITD before using them to simulate the
concept of what the air transport system
could become using traffic growth and
route forecasts from 2020 and beyond.
Some of the work that we are pursuing
within Clean Sky builds on a systemsoriented
approach which Thales itself had
initiated within its own Airlab technicaloperational
laboratory in Toulouse. Airlab
aims to develop technical and operational
simulation environments for civil air transport
based around the seamless interoperability
of systems both on the ground
and in the air: it offers a collaborative environment
in which the key players in the
air transport sector between ground and
air can interact effectively from departure
to arrival gate taking into account all the
steps and actors in between.
What should be the key priorities
of European research in the
years to come?
ACARE deliverables are aimed at maintaining
the competitiveness of the
European aerospace industry and meeting
the needs of society at large: these should
be regarded as research priorities for the
sector in Europe.
Breaking these down, they involve:
n Keeping the needs and expectations
　
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本文鏈接地址：Skyway Magazine Winter 2008(19)