Fighter aircraft are designed on the principle of enhanced lift generated by vortex flow to enable high maneuverability during air-to-air combat. The reason for studying Delta Wing at low-speed incompressible flow is that all high-speed aircraft spend the majority of the time in subsonic speed thus saving economy. The basic advantages of using a delta wing over a conventional airfoil are stalling at a higher angle of attack and more lift at a certain angle of attack. Due to the complexity and high potential, intense research is being conducted in this field to improve the knowledge of
the shedding, interaction, and breakdown processes of vortex flow. Techniques were identified during the study to control the vortical flow which would provide extra control power, complementing conventional control surfaces. Here smoke flow visualization over a delta wing is presented. The effect of wing rocking is also shown.