From TecnicaFormula1.com (sorry for translate)
Aerodynamics
The talk of the paddock throughout the weekend was McLaren , who managed this week to pass the crash test of its new short nose, which, after many difficulties, we have seen in the day. As we can see in the picture below it it is very similar to Williams, which ostensibly reduces nose nose (no longer protrudes from the front wing but is far behind, is very short), while the media are a little more curved (1). Furthermore, the supports still with the function of channeling the airflow.
The idea is to improve air flow over the nose below, between the pillars supporting the front wing, to collect and direct low pressures without much interference-to the rear of the car, through the pontoons and the bottle Coca-Cola. Let's say this piece is to improve, with least resistance, the path that the airflow. Something that affects the entire drive and all its aerodynamics, hence the interest of the team to implement this bill.
Within this new aerodynamic package we found the floor in front of the rear with many improvements, original wheels, and not seen in the other teams. If this car had a good engine ... would dawn. The area L soil ahead of the rear wheels is normally used to work with them causing turbulence in their turn, and to deliver the cleanest air diffuser. So, we have seen a truly novel solution (1) with two rows of slot paired better make the air below the wheel. They are also improved two transverse cuts in the soil (2) in front of the wheels and has elongated vertical slot (3) which carries air to the diffuser preventing part of the airflow towards the wheel is lost.
As the diffuser itself, we could not find any kind of improvement over the last changes made in Bahrain with respect to China and Malaysia. In any case, here we put all these developments comparing with that seen in Austria, within the few images there are, interestingly, the Woking team.
Where we have indeed seen a small intervention in the front wing, which last two flaps are redesigned to suit this track, presenting a lower level of downforce to get the lines of the Red Bull Ring.
The rear spoiler is the same seen so far, but with much more downforce level than in Canada, where it was much less important. Thus the planes thereof are concave and thus more air extraction capacity to generate low pressures below them.
Noted, finally, the use of a new material in the pipes of the radiators, at least on the right side of the car, as in the left we saw that used in Canada.
