An experimental and computational study was carried out to investigate the effects of lateral blowing on a delta wing at low to moderate angles of attack. Motivation for the present study is to use lateral blowing to increase lift and to provide roll control for a high-speed configuration during takeoff and landing approaches. For this purpose, lateral blowing was applied through blowing slots along the leading edge of a delta wing symmetrically to increase lift and asymmetrically to induce rolling moments. Experiments showed that the higher the blowing rate, the greater the forces and moments that were attained on the model. Results also showed that the effect of blowing on the strength and location of the vortex sheet depended on the strength of the jet and the angle of attack. Computed solutions of the Navier-Stokes equations were obtained for the same wing geometry. Computations successfully captured the qualitative trends observed in the experiments. The physics of the blowing scheme, the underlying mechanisms of the control reversal phenomenon, and the higher efficiency of partial slot blowing compared with full slot blowing were determined by both examining the experimental and computational results.
Effects of leading-edge lateral blowing on delta wing aerodynamics
Beeinflussung der Aerodynamik eines Deltaflügels durch seitliches Ausblasen von Luft
AIAA Journal ; 34 , 12 ; 2471-2478
1996
8 Seiten, 16 Bilder, 14 Quellen
Aufsatz (Zeitschrift)
Englisch
Tragflügel , Tragflügelumströmung , Aerodynamik , Rollbewegung , Flugverhalten , Auftrieb , Drehmoment , Strahlausfluss , Luftströmung , Wirbelsystem , Navier-Stokes-Gleichung , experimentelles Ergebnis , mathematische Lösung , Flugregelung , Flugzeugrollsteuerung , Gitternetz , numerisches Verfahren , Strömungsfeld , Druckverteilung , Schlitz , Wirbelströmung , Anstellwinkel (Tragflügel)
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