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Crosswind-Reduced Separations for Departure Operations

Objective

Increases in air traffic over recent years have resulted in congestion at many airports. The need to increase airport capacity is one of the major challenges facing ATM research today. Such an increase could be achieved by reducing the current separation minima while maintaining levels of safety. ICAO separation standards for landing and take-off were implemented in the 1970?s to protect an aircraft from the wake turbulence of a preceding aircraft. However research has shown that the transport and persistence of wake vortices are highly dependent on meteorological conditions, so that in many cases the ICAO standards are over-conservative. By developing a full understanding of wake vortex behaviour in all weather categories separations could be reduced under certain suitable conditions. The CREDOS project will study the operational feasibility of this approach by focussing on the situation for take-off under crosswind conditions. Although this represents only part of the scope of application, the methods and tools developed by this project can be later used to cover arrivals and other meteorological conditions. The aim of CREDOS is to prove that this approach to reducing separations is valid and feasible. The project will use recordings of wake vortices taken at St Louis and Frankfurt airports to develop models of wake vortex behaviour. Using Monte Carlo simulation techniques these models will be used to establish safe separations under various crosswind conditions. Building on work already completed, an operational concept for crosswind departures will be developed and validated in accordance with the Operational Concept Validation Methodology. The project will also produce an algorithm for detecting wake vortex encounters from flight recordings and this will be used as part of the validation process. The importance of clear communication of the new concept to stakeholders, both operational and managerial, is recognised and addressed in the project.

Coordinator

EUROPEAN ORGANISATION FOR THE SAFETY OF AIR NAVIGATION (EUROCONTROL)

Address

Rue De La Fusee, 96
Brussels

Belgium

Administrative Contact

Marie Therese MELONI (Ms.)

Participants (10)

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AIRBUS OPERATIONS GMBH

Germany

STICHTING NATIONAAL LUCHT- EN RUIMTEVAARTLABORATORIUM

Netherlands

M3 SYSTEMS SARL

France

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES'

France

UNIVERSITE CATHOLIQUE DE LOUVAIN

Belgium

TECHNISCHE UNIVERSITAT BERLIN

Germany

NATS (EN ROUTE) PUBLIC LIMITED COMPANY

United Kingdom

DFS DEUTSCHE FLUGSICHERUNG GMBH

Germany

INGENIERIA Y ECONOMIA DEL TRANSPORTE SA

Spain

DEUTSCHES ZENTRUM FUR LUFT- UND RAUMFAHRT E.V.

Germany

Project information

Grant agreement ID: 30837

  • Start date

    1 June 2006

  • End date

    30 November 2009

Funded under:

FP6-AEROSPACE

  • Overall budget:

    € 4 997 135

  • EU contribution

    € 2 820 175

Coordinated by:

EUROPEAN ORGANISATION FOR THE SAFETY OF AIR NAVIGATION (EUROCONTROL)

Belgium