What is the flow-vis paint and aero rake on an F1 car in testing?

Formula 1 teams use pre-season testing to extract as much data as possible via various methods – flow-visualisation paint and aerodynamic rakes included. 

Both play a key role in every pre-season test – plus some free practice sessions – as a team attempts to learn more about its aerodynamic performance in preparation for the upcoming campaign. 

This year is expected to be no different with F1’s 2024 pre-season test on the 21-23 February at…