Euler computation of a tip vortex rolling up through the trailed vorticity sheet The difference inside the spanwise part of velocity above and beneath the wing (involving being inside the inboard direction over and while in the outboard way below) persists on the trailing edge and in the wake downstream. https://holdenxdkqw.national-wiki.com/1287532/how_much_you_need_to_expect_you_ll_pay_for_a_good_lift