Formula None wrote:The crash structure shape is merely the result of some very constraining rules for that part (a link between the end of the gearbox and the safety light region that per the regs has to be a banana shape, in effect). The aspect ratio is just too low to provide anything but drag. What's different this year is that the beam wings have been raised a little, and the crash structure lowered a little to decouple the two in order to make the beam wing itself wider. You can be sure any downforce made by the CS itself is consequential and would be small relative to the gains you get from making the beam wing 150mm wider.
Mclaren's beam wing is not raised.
+1 Exactly. Equally, moving the crash structure down a little pushes it closer to the top side of the diffuser, restricting airflow in this area. It's trade off and you could easily argue the beam wing is more important now as the diffuser is so basic.
There is no double diffuser anymore. Check williams fw33. An this area is only what? 3.5 inches wide.
And the curved crash structure does create downforce. This is something that is glaringly fundamental. The first turbines were impulse turbines and the blades use a similar shape. I am not arguing, I am stating a fact that curving the crash structure makes down-force, regardless of the beam wing. So with the beam wing it is a double whammy as I said orgininally. nothing there to argue?