Assessment of high-lift concepts for a regional aircraft in the ALONOCO project
Paper i 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

Totalforsvarets forskningsinstitut

O. Grundestam

Totalforsvarets forskningsinstitut

S. H. Peng

Totalforsvarets forskningsinstitut

Huadong Yao

Chalmers, Tillämpad mekanik, Strömningslära

Lars Davidson

Chalmers, Tillämpad mekanik, Strömningslära

Lars-Erik Eriksson

Chalmers, Tillämpad mekanik, Strömningslära

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

AIAA 2012-0277



Annan teknik