I just love this front suspension geometry. Along the field it appears integrated steering arm is becoming a norm. Merc and Ferrari now both have steering arms integrated in lower wishbone, McLaren integrated it into upper wishbone. It's apparent teams would not go for it, unless it brings certain benefits and looks good on aero simulations. But seeing RB's take on it, I really think they put it further.
RB, like Lotus and Williams, left it outside. They moved it up from where it was in RB10:
And they brought it way up to upper wishbone, and didn't just align it with it, but even moved it a tinny bit higher over it's (curiously fat) front arm. It has a nice propeller-like shape to it, and when looking at topdown pictures of it posted by stefan_, it's apparent it'll not just let the air pass through it, as per regulations, but will also have quite a bit more to do with airflow over the suspension. I bet there was a lot of thought used into putting that steering arm there, and shaping that wishbone into that peculiar shape, and that's that extra bit more that we'd come to expect from this team.
