Petr Hlawiczka's video: How F1 wind tunnels work Sauber

In this 44-minute video documentary our Head of Aerodynamics, Willem Toet, explains everything you might want to know about wind tunnels, wind tunnel testing and F1 wind tunnels in particular. CONTENT and TIME CODES (click on the time code to jump directly to the respective content): 00:00 - Basics of Wind Tunnel Design ► basic principles, history ► open-circuit vs closed-circuit wind tunnels ► energy efficiency ► fan, foundation, seismic mass, vibrations ► air rotation and turbulence 04:58 - Heat, Cooling & Airflow Optimisation ► heat, cooling & radiators ► airflow optimisation 08:40 - Test or Working Section ► test section, settling chamber ► closed-jet, slotted-wall, 3/4 open-jet ► contoured-wall, adaptive-wall ► aerospace vs motorsport wind tunnel technology ► boundary layer reduction in motorsports 15:16 - Model Motion System & Tyres ► airospace vs motorsport model mounting systems ► model motion: yaw, pitch, roll ► wheels-on vs wheels-off, wheel steer ► wind tunnel model tyres vs. race tyres 20:51 - Moving Ground Technologies ► rolling road ► development: synthetic rubber vs steel belts ► development: suction control ► friction, cooling ► air bearings & vacuum pumps 27:15 - Measurement Tools ► load cells (6-/5-component) ► wheel load cells ► tyre patch load cells ► downforce, side-force, drag-force ► pressure sensors, motors, capillary tubes 32:04 - The Myth of Smoke in the Tunnel ► smoke wands, rakes, airflow visualisation 33:43 - Model Size & Regulations ► 50% vs 60% vs 100% model testing ► translation of model sizes and speeds ► FIA regulations and testing limitations ► wind-on restrictions © Sauber Motorsport AG, 2014