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Red Bull RB6 – Arched diffuser roof at Valencia ( GP Europe )

January 15, 2011 1 comment

 

Red Bull launched another new version of the diffuser at Valencia which featured an arched roof compared to the previous flat one . This change came to complete the Canadian spec and was possibly  triggered by the revised EBD already raced since Canada .

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Red Bull RB6 – Minor revisions to the diffuser at Canada


          In an attempt to reduce further the  unwanted turbulence created by the rear wheel rotation Red Bull revised the diffuser outer tabs making them having pointed edges .

Red Bull RB6 – Updated diffuser central zone at Spain


 

      RB6 had new exhaust outlets and vented rear floor at Catalunya , changes that affect a lot how diffuser is functioning and so  Red Bull had to revise also the diffuser itself . The new structure had a more boxy shape to the central zone and a reduced opening between the wall and the rear structure to cope better with the changes made .

Red Bull RB6 – Major updates to the diffuser at Bahrain


 

         A heavily revised diffuser was presented by Red Bull at last winter test at Barcelona , a structure  retained for Bahrain . The new diffuser had enlarged double deck tunnels and the rear crash structure separated from the main section . The changes were made to increase the quantity of air passing from the double deck to increase diffuser’s sunction effect boosting downforce production .  Finally there is a clever small duct at the side of the double deck wall to  permit  hot exhaust gases from the very low positioned exhaust pipe outlet  to enter the second diffuser’s deck , energizing the airflow and boosting its performance further .

Red Bull RB6 – Launch spec diffuser details


 

        RB6 has a very low rear zone due to its pull rod rear suspension and a double deck diffuser  . There are four large vertical fences (splitters)  in total that divide the diffuser into a central section and four smaller tunnel sections . The venturi channels spotted on the outer diffuser section aim to increase  the speed of air passing close to the wheels in an attempt to reduce turbulence created by wheel’s rotation .

        Diffuser’s main function  is to accelerate the airflow passing under the car body by pulling it, creating low pressure under the car and thus large amounts of downforce with minimum drag penalty . It is not easy for a team to copy a succesful rival team diffuser design as each design feats only to that car and its special characteristics . A brutal copy of the diffuser would probably make the car even slower ! However spying others can inspire mechanics to explore new concepts and structures .

Red Bull RB6 – Vented rear floor at Spain


   pre-Spain

     Red Bull followed the 2010 trend for vented rear floor , pioneered by Mc Laren  , and presented its own version at Spain among other chnages also launched at Spain . This vent boosts downforce production by feeding with air  the diffuser side sections .

  Spain

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