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European High Lift Programme II (EUROLIFT II)


Meeting the short and long-term goals of future aircraft development as specified in Vision 2020 will be indispensable to keep and extend the competitiveness of the European aircraft manufactures. High lifaerodynamics has the potential to provide major contributions to approach these objectives with respect to efficiency and environmentally friendly design. Efficiency in terms of improved aircraft performance by advanced, but simple high lift systems with reduced maintenance requirements. But also increased efficiency of industrial design processes by incorporating highly effective theoretical and experimental tools in a carefully balanced manner. Environmental friendliness by e.g. low noise emissions as one of the most important prerequisites for the growth of air traffic. Noise emissions are primarily related to the take-off and landing phase. Advanced high lift systems with a reduced number of slots and edges hold promise to reduce noise emissionsconsiderably. A prerequisite to meet these goals will be the use of advanced numerical and theoretical simulation tools, together with a thorough understanding of the dominant high lift flow phenomena for new configurations, for which experienced based extrapolation rules have reached their limit. The EUROLIFT II project is intended to provide these tools and knowledge, building up consequently on the results and experience of the predecessor, EUROLIFT II.

The major objectives of EUROLIFT II are:
- Provide specific physical understanding of the various vortex dominated flow effects at the cut-outs of a high lift system including the scale effects up to flight conditions. In addition to the purely viscous dominating maximum lift effects as investigated in EUROLIFT (I), the vortex dominating effects play a major role in determining maximum lift for a full 3D aircraft configuration with pylon and nacelle. This understanding will be achieved by a complementary approach of experimental throe

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