Gary Anderson, technical consultant, on Mercedes' Wednesday upgrades
Mercedes' bargeboard itself is like a vertical-mounted, slotted flap wing.
Basically you can make this type of design do a lot more work with these slots. This in turn will pull more of the airflow from underneath the front of the chassis, making the front wing work more efficiently, and introduce it onto the leading edge of the underfloor.
If higher energy airflow is introduced to that leading edge, the diffuser will be able to pull it through and under the floor area at a higher speed, which will mean it will produce more downforce underneath the car.
As with any component that is being used to influence the airflow, the mounting system is very important.
You can lose all of the benefit if the mounting system is not sympathetic to the airflow. As can be seen, each vertical section is mounted on its own little support, with its own leading and trailing edge.
As the airflow comes around the leading edge of the sidepod, each of these sections will create some downforce in its own right.
The sum of all these components might add up to something like 10kg of overall downforce, which would be equivalent to around 0.1 seconds of lap time.
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