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Williams FW30 - rear double winglets development 02 November 2008

Not a big change, but this is just one of a many subtle modifications brought by the team to Brazil. The team wanted to find ways to increase downforce at the rear, without altering the angle of the rear wing, which is especially important at Interlagos as all teams need to improve straight-line speed for the long, uphill start-finish straight, whilst also enhance grip in the twisty sections of the Interlagos track. By slightly increasing the surface area of the additional winglet placed underneath the main flip-ups (yellow arrow), Williams hope they have improved the management of airflow close to the rear wheels, reducing the disruption caused by the wheels' rotation. This will improve aero efficiency particularly near the rear wing, providing some additional downforce.