The above photographs show the breakdown of a leading-edge vortex on an 85 swept delta wing at a 40 angle of attack. The freestream velocity is 10 ft/sec. For highly swept wings at high angles of ...

The unsteady structure of spiral vortex breakdown above a 75 sweep delta wing was investigated numerically through direct solution of the full unsteady compressible Navier Stokes equations. [1] The ...