Impingement of a von Karman vortex street on a delta wing

A series of experiments, where a von Kàrmàn vortex street wake was made to impinge upon a 70-deg delta wing, was conducted at Wichiita State University using a towing mount. There was a temporal correlation to the burst loaction of the delta wing's leading-edge (LE) vortices, which indicated modulation of the burst loaction. It was found that the average vortex-burst location reamained approximately the same whether the freestream flow was clean or in the wake. Dye concenntrations at regular intervals were also observed in the LE vortex core.