K.-C. Pfingsten, R. Radespiel, M. Kamruzzaman

Numerical 2D simulations with a RANS flow solver are conducted to find the aerodynamic sensitivities of two different gapless high-lift configurations. Both systems use the engine flow to increase the lift of the airfoil by blowing. One investigated configuration is the Upper Surface Blowing (USB), here the whole engine exhaust is blown over the wing and thus the flow over the flap can bear large adverse pressure gradients without separation. The other investigated high-lift configuration is a profile which utilizes trailing edge blowing, here only a small fraction of the engine flow is used for Circulation Control (CC). The bleed air is pipelined from the engine to a slot directly upstream of the flap. It was found that the use of USB or CC yields lift coefficients which are comparable or superior to those generated by conventional highlift systems. Hence it might be possible to design a gapless high-lift device applying either USB or CC.

CEAS/KATnet Conference on Key Aerodynamic Technologies, Bremen, 2005

Conference Paper

englisch

21,0 x 29,7 cm, 10 Seiten

DGLR-Bericht, 2005, 2005-07, CEAS/KATnet Conference on Key Aerodynamic Technologies - Proceedings; S.1-10; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aerodynamics

Bibliothek

2005