PlatinumZealot wrote: ↑12 May 2018, 01:36
DiogoBrand wrote: ↑11 May 2018, 15:59
Owen.C93 wrote: ↑11 May 2018, 15:47
It looks like the vane is perpendicular to both arms when viewed in plan. I'm not sure what regulation is dictating that however.
Perhaps the regulation about the suspension arms being a neutral aero surface, so you could only have perpendicular flaps, which in theory are neutral.
Nah.. Remember that rule about the legality volume where all bodywork is considered as a brake duct? It is exactly this at play here.
Diogo may be right. These fins look farther inboard than the innermost parts of the brake duct assemblies. As pointed out, they are a vertically symmetrical arrowhead shape, and faceted in two planes perpendicular each to a suspension arm, with a permitted fillet joining the two planes together. The little holes are a mystery, though, not sure how they meeting the wording of the rules. Unless the correspond hole on the mirrored side is present but obscured within the suspension arm.
Essentially, these are local enlargements of the suspension arms.