Listen to this article Williams FW44 front wing detail Photo by: Giorgio Piola A look underneath the Williams FW44’s front wing which is far less complex than we’re used to, as teams can no longer used strakes or overtly complex flap geometries. Also note the camera mounted to the FOM camera pod. AlphaTauri AT03 floor detail Photo by: Giorgio Piola The AlphaTauri AT03 has a floor cutout midway along its length where a flapped section is mounted above the floor in its place. Alpine A522 side detail Photo by: Giorgio Piola A nice overview of the Alpine A522 from the side, note the floor strakes protruding out the front corner of the floor and the cutout and rolled section thereafter. Yuki Tsunoda, AlphaTauri AT03, with aero paint applied Photo by: Steven Tee / Motorsport Images The AlphaTauri AT03 with green flo-viz paint applied gives a general idea of some of the flow streams as it makes its way down the car. Max Verstappen, Red Bull Racing RB18 Photo by: Mark Sutton / Motorsport Images Red Bull also joined in with the paint party, albeit their use of flo-viz was a little less liberal and more localised. Fernando Alonso, Alpine A522 Photo by: Mark Sutton / Motorsport Images Alpine probably thought that by using blue flo-viz we might not notice it against its livery, but we did. Here it is daubed all over the car’s rear end, as Fernando Alonso kicks up some gravel on the track. Flow-vis paint on the car of Max Verstappen, Red Bull Racing RB18 Photo by: Steven Tee / Motorsport Images More flo-viz on the Red Bull RB18 towards the end of the first day of testing, albeit more targeted than some of their rivals in order that it can understand specific flow structures. Max Verstappen, Red Bull Racing RB18 Photo by: Giorgio Piola Red Bull also changed one of the panels on the RB18’s sidepods and engine cover during the afternoon session to one with a succession of cooling gills. Lewis Hamilton, Mercedes W13 Photo by: Carl Bingham / Motorsport Images Mercedes also switched out a panel beside the cockpit which incorporated some additional cooling gills. Charles Leclerc, Ferrari F1-75 Photo by: Mark Sutton / Motorsport Images Flo-viz on the leading edge of the floor and underfloor tunnel strakes of the Ferrari F1-75. Max Verstappen, Red Bull Racing RB18 Photo by: Mark Sutton / Motorsport Images Rear view of the Red Bull RB18 which shows not only the diffuser, rear brake duct winglets and their uniquely stacked beam wing design, it also shows the size of the upper cooling outlet. Lando Norris, McLaren MCL36 Photo by: Mark Sutton / Motorsport Images Comparatively, the McLaren MCL36’s cooling outlet looks a little wider. Charles Leclerc, Ferrari F1-75 Photo by: Mark Sutton / Motorsport Images The Ferrari F1-75 has a much smaller rear cooling outlet but this is due to the cooling gills it has pressed …