Red Bull have taken their time to thoroughly develop their own F-duct for the RB6, a car which is already a masterpiece. They are the latest top team to introduce it, but it certainly is one of the most interesting system yet seen.
Pictures taken on Friday afternoon show the RB6 with an uncovered F-duct, consisting of two channels through the sharkfin and onto the rear wing. Both channels start in a closed box, seemingly connected to the airbox. From there, the upper channel feeds air to the rear of the upper rear wing flap, like any conventional F-duct system. Most interesting is however the second channel which leads into an aperture under the lower end of the rear wing. One plausible solution is that the driver can choose where to route the air, but how the airbox connection comes in is so far unclear.