Active Manipulation of a Rectangular Wing Vortex Wake with Oscillating Ailerons and Winglet-Integrated Rudders
This paper presents results of experimental investigations regarding the vortex wake of a rectangular wing with winglets in a water towing tank. The model comprises ailerons and additional rudders, which are integrated into the winglets. The ailerons and the rudders are able to oscillate around a static deflection to excite inherent short-wavelength instabilities in the vortex system. The Particle Image Velocimetry method is used to investigate the vortex wake up to about 40 spans behind the model. The results show that, depending on the preselected aileron and rudder deflections, an oscillation of correctly chosen frequency leads to a faster decay of the vortex wake in comparison to the statical case.
KeywordsParticle Image Velocimetry Light Sheet Vortex Pair Vortex System Image Velocimetry Particle Image
Unable to display preview. Download preview PDF.
- W.H. Andrews, G.H. Robinson, R.R. Larson: ”Aircraft Response to the Wing Trailing Vortices Generated by Large Jet Transports”. NASA Aircraft Safety and operating Problems, Vol. I. NASA SP-270, May 1971, p. 115–126.Google Scholar
- J.D. Crouch, G.D. Miller, P.R. Spalart: ”An Active-Control System for Breakup of Airplane Trailing Vortices”. AIAA Journal, Vol. 39, No. 12, 2001, pp. 2374–2381.Google Scholar
- S. Kauertz, G. Neuwerth: ”Excitation of Instabilities in the Wake of an Airfoil with Winglets”. AIAA-2006-3470, Applied Aerodynamics Conference, June 5–8, 2006.Google Scholar