Williams pulled out its full spectrum of aero rakes at the reprise of pre-season testing on Wednesday morning in Barcelona.
The spectacular "cheese graters" seen here on Nicholas Latifi's FW43 are sensors that measure the dynamic pressure around a car and help understand the flow structures originating from areas like the front wing.
The subsequent data almost immediately processed by a team's software and allows for relevant changes in wing angle.
Not suitable for Monaco obviously…
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