Force India VJM03 - F-duct

Force India were the first team to have the F-duct blowing on to the rear wing's main plane instead of the flap (blue arrow). This system was introduced in Silverstone then copied by Renault at Spa, Red Bull and BMW Sauber in Singapore, and McLaren in Japan and Korea. It's a more powerful and efficient solution. Ferrari were also expected to follow Force India's example, but chose instead to concentrate on their blown diffuser solution.

Ferrari F10 - modified brake ducts

An additional, small fin has been added to the front brake ducts in Brazil to gain any extra downforce possible. On Friday only Alonso had it, together with a three-slot configuration in the underbody in front of the rear tyres. It's interesting to note that in the final few races of 2010 a lot of effort has been made by all the teams to optimise the aero efficiency of the brake ducts, almost treating them as aerodynamic devices.

Ferrari F10 - blown diffuser

Finally Ferrari implemented their complete blown diffuser solution in Brazil with the airflow from the exhausts also blowing inside the side channels. Unlike the Red Bull, it features a horizontal hole (1) rather than the vertical one of the RB6. The central section used in Korea has been modified with more rounded profiles (2) and the additional middle plate (3) that was seen on the car up until Suzuka has now been removed.

Williams FW32 - rear brake ducts

The majority of teams have been busily evolving their brake ducts, to the point that they are becoming more like aero devices. Williams' most recent version, as seen in Brazil, has been designed to recover as much downforce as possible and uses a series of fins (black arrows). The shape of the area between the rear tyres and the side channels of the diffuser (red arrow) is designed to receive air blowing from the car's exhausts.