The effects on leading edge vortex formation produced by apex fences mounted on two delta wings were examined in a subsonic wind tunnel. Pressure data were collected on the upper surface of the test wings and oil flow and bubble flow visualizations were performed. The deflections studied were 74, 90 and 65 deg in one-sided and two-sided configurations. Full span and semi-span delta wing planforms were used. Relatively small, symmetrically deployed apex fences provided enhanced upper surface suction which, in some angle-of-attack situations, could lead to a pitch-up force. Asymmetrically-deployed fences showed promise for yaw control at high angles of attack, althouh the force effectiveness has yet to be quantified.
An experimental investigation of apex fence flaps on delta wings
1985-10-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Experimental Investigation of Vortex Flaps on Thick Delta Wings
Online Contents | 1994
|Experimental Investigation of Thick Delta Wings with Vortex Flaps
British Library Conference Proceedings | 1994
|