Assessment of high-lift concepts for a regional aircraft in the ALONOCO project
Paper in proceeding, 2012

This work introduces the work conducted in the EU JTI project ANOLOCO, which has aimed at an assessment of aerodynamic and aeroacoustic performance of several high-lift configurations of a regional aircraft. The high-lift designs are for a laminar and slat-less wing, including configurations with a double slotted flap, single slotted flap, drooped nose and a Krueger flap. The aerodynamic performance is assessed from steady state RANS calculations up to maximum lift. The aeroacoustic performance is based on hybrid RANS-LES calculations for flow-induced noise generation, and using acoustic analogy methods for far-field noise propagation. Three different analogy methods are evaluated and compared. The assessment shows that the configuration with a Krueger flap gives the best performance. The maximum lift is close to 20% higher than for any other configuration and the noise levels are also reduced, up to 10 dB lower than the configuration with a double slotted flap.


P. Eliasson

Swedish Defence Research Agency (FOI)

O. Grundestam

Swedish Defence Research Agency (FOI)

S. H. Peng

Swedish Defence Research Agency (FOI)

Huadong Yao

Chalmers, Applied Mechanics, Fluid Dynamics

Lars Davidson

Chalmers, Applied Mechanics, Fluid Dynamics

Lars-Erik Eriksson

Chalmers, Applied Mechanics, Fluid Dynamics

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, 9-12 January 2012

AIAA 2012-0277
978-1-60086-936-5 (ISBN)

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Mechanical Engineering

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