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window of opportunity. n
Over 20 airports now
employ Continuous Descent
Approach (CDA) and many
more have expressed an
interest in doing so.
Focus
18
Independent Platform
As the world抯 two largest
aviation blocs ?North
America and Europe
?strive to modernise
their individual aviation
systems, the threat of
divergence hangs
menacingly over the
industry: an outcome that
would ultimately serve
no interest or purpose.
Aviation journalist Anne
Paylor reports.
Interoperability is a must and some of the
best brains at a legislative, political, operational
and technical level are now being
brought to bear to find a way to achieve
it. Solutions, industry observers believe,
are achievable, but the question marks
over how remain.
In essence, both the US Federal Aviation
Administration抯 Next Generation Air
Transportation System (NextGen), aimed
at transforming the US National Airspace
System (NAS), and Europe抯 SESAR
(Single European Sky ATM Research) air
traffic control infrastructure modernisation
programme, have the same goals in
mind.
They are targeted at harnessing the
benefits of new satellite-based technology
to optimise the airspace systems
by increasing capacity, improving efficiency,
and enhancing safety.
Closer cooperation essential for
interoperability between
NextGen and SESAR
Skyway 49 - Autumn 2008 19
ATM stakeholders allowing them to
share the same data.
The whole concept continues to be
based on the principle that ultimately
humans will remain the central decisionmakers.
However, controllers and pilots
will be assisted by new automated functions
to ease their workload and enable
them to handle complex decision-making
processes.
SESAR is a three-phase project, the first
of which ?the definition phase ?has now
concluded. The result of this definition
phase is an ATM Master Plan ?in effect,
the European ATM modernisation plan ?
that identifies from research to implementation,
actions needed to achieve SESAR
goals from the perspective of each stakeholder
group.
SESAR has now moved into its second
(development) phase, which runs from
now until 2013 and will produce the
required new generation of technological
systems and components as defined in
the Master Plan.
Beyond that, the Deployment Phase
(2013-2020) will seek to build the new
infrastructure, both within Europe and in
partner countries. This will be the responsibility
of the industry without the need for
further public funding.
SESAR抯 key performance targets are
ambitious and include:
n a three-fold increase in capacity;
n improving safety by a factor of 10;
n reducing the environmental impact
per flight by as much as 10%; and
n cutting ATM costs by 50%.
The key to achieving those targets, which
is at the core of the SESAR concept, is
the business trajectory principle in which
airspace users and controllers collaborate
to define optimal flight paths. Leveraging
both existing and newly-developed technologies,
SESAR抯 target concept relies
on a number of new key features that
make up the main building blocks of the
project. These are:
n the network operation plan ?a
dynamic rolling plan for continuous
operations that ensures a common
view of the network situation;
n full integration of airport operations
as part of ATM and the planning
process;
n trajectory management, to help
minimise the constraints of airspace
organisation;
n new aircraft separation modes that
will improve the safety, capacity and
efficiency of the airspace system; and
n system-wide information management,
which will securely connect all
SESAR is a performance-driven programme designed
to modernise the air traffic control infrastructure in
Europe. It aims to put in place a new-generation air
traffic management system capable of ensuring the
safety and fluidity of air transport over the next 30 years.
8
Focus
20
Independent Platform
Closer cooperation essential for
interoperability between NextGen
and SESAR
NextGen will be realised through the
coordinated efforts of the Departments
of Transportation, Defense, Homeland
Security, and Commerce, as well as the
Federal Aviation Administration (FAA),
the National Aeronautics and Space
Administration (NASA), and the White
House Office of Science and Technology
Policy. The NextGen vision was developed
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本文链接地址：
Skyway Magazine Autumn 2008(13)
