The circled area is max 50mm thick. The vortex from the floor strakes has the same bulk rotation as the orientation of that surface.gandharva wrote: ↑06 Apr 2022, 13:06Could this (red circles) be holes and the plank itself is hollow? Or is this not allowed?
Green area is also very interesting, but I have no idea what's going on there...
https://i.imgur.com/80CogyV.jpeg
If you add tangential airflow to a vortex, you will add more momentum to the rotation and lower the pressure at the core.
That's the theory behind the fire vortex