The upgrade on the RB19 incorporates the semi-detached wing tip section that has been pursued by the other teams for several races now.
The new arrangement has a metal bracket that sits inside the rolled mainplane boundary upon which the upper tip section resides.
This not only results in the upper flap being extended laterally but also alters the way the vortex will form at the tip.
This obviously has an impact on the shape of not only the tip section but also the rear cutout thereafter, with the designers having to rebalance their design to factor in downforce and drag requirements.
Explaining the change in the official FIA technical submission documents, Red Bull was open that it had copied the idea from others.
“Taking inspiration from competitor designs, the end of the flap element has a revised curl to the endplate which offers more local load for this element for this particular upper wing design,” it said.
Meanwhile, there’s a parallel development program underway from a number of Red Bull's rivals, who have also looked at the way the upper tip section of the wing and endplate are connected.
Source: Autosport