Effect of leeward flow dividers on the wing rock of a delta wing

The effect of a leeward flow divider on the wing rock of a 80-degree sharp-edged delta wing was studied in a wind tunnel experiment. Force and moment measurements and flow visualizations were performed to investigate the effect of divider geometry, size, and placement on wing rock. It was found that the divider can suppress wing rock over a wide range of angle of attack, but can also be destabilizing under certain conditions. A fluid mechanism explaining the effects of the divider on wing rock was proposed.