Testing usually sees teams apply flowviz paint on their cars to visualize airflow on certain car elements. They do so to verify the findings from the windtunnel and detect any unwanted effect that was not simulated.
So did Mercedes, revealing airflow on the suction surface of the rear wing and its endplates (flows D and E).
It is clear in the image that airflow has drawn straight lines onto the suction surface of the main flap. This shows perfect laminar flow, as one would expect w... Read more