In the last few races, Red Bull came back to the dominate position again nearly as the situation in previous 2 seasons. It’s not due to a development of one single miracle part, but rather the whole aerodynamics pakage – DDRS, Flexi front wing and nosecone, modifidied exhaust profile etc. I’ll look into the DDRS first in this post and hopefully continue this series in coming posts.
After Mercedes’ Front wing DDRS and Lotus’ passive DRD, Red bull’s introduced their DDRS, kind of inspired by both systems. As the name DDRS suggests, it’s activated by DRS, the same as the Mercedes system. However, it’s fully equiped in the rear wing assembly same as the Lotus system.
RB8 now has a small hole on each side of the endplates, which is covered by a oversized plate attached to the rear wing main plane when DRS is not activated. When DRS is in operation, the rear wing tilts and exposes the holes, allowing air to pass through and guided out underneath the beam wing to stall it.
Red Bull DDRS inlet – notice the hole exposed as the covering plate tilts
As mentioned, Red Bull’s DDRS is fully compact in the rear wing assembly. The duct curve is slightly shown in some close shots on their endplates.
Red Bull DDRS – Duct curve on endplates?
There’s possibly two outlets under the beam wing – one in the middle and the other near trailing edge, although the exact part it stalls – either the centre of beam wing or wing tips – is still ambiguous. ScarbsF1 inclines to the wing tip stall idea as he sees small impact on stalling the middle section (Analysis: Red Bull DDRS). Major media however believe that it’s the centre part that stalls although there’s no clear picture showing the existence of these holes. techF1Les came up with three posible conficurations with the last one mostly proved by actual observation.
Red Bull DDRS possible outlets position
I personally agrees with the wing tip stall argument since I’ve not noticed any clear picture showing the central part outlets. Some arguments regarding the central part stall working in coherence with diffuser does look interesting, although more evidence is needed for that.
I was a bit surprised as Red Bull introduced this system near the end of the season, while it’s going to be banned next year. However, they’ve somehow showed it’s worth investigating by continuing strong performance recently. This system has definitely given Red Bull a better qualifying performance and top speed boost during the race.