Sauber’s aerodynamics specialist **Willem Toet** will reveal how aerodynamics can improve the performance of an extreme track day car during an exclusive Engineering Workshop presentation on the first day of Professional MotorSport World Expo; before following up with an ‘aerodynamic masterclass’ on the second day.

### What’s the background to your presentations and what will you discuss?

In my first presentation I will give an indication of just how much difference aerodynamics makes to the likes of an F1 car, and touch on the tools used to evolve F1 cars aerodynamically. Then I will briefly discuss the importance of aerodynamics for road cars, hypercars, GT cars and track day cars. I will pick some of the aerodynamic device types used in motorsport to create downforce and explain how they work.

In my second presentation, I will introduce some fun ways of getting a feel for the sheer power that can be harnessed from the invisible and (at low speed, at least) easily movable air we breathe. I will give an example of how dramatically things can go wrong when powerful aerodynamic devices do not function correctly. Finally, I will share some of the tricks that motorsport aerodynamicists have learned for using air.

**Unlike F1 teams, most race teams don’t have easy access to wind tunnels – how can they benefit from what you will discuss?**

With tight budgets, one can obtain additional grip using aerodynamics by combining some inside knowledge with track testing, CFD (an increasingly useful and cost-effective means of doing research) and, yes, via wind tunnel testing. In this talk I will try to help those wanting to modify their own cars with no reasonable access to fancy engineering tools.

**At the highest level, understanding aerodynamics can involve complex mathematics, but can you get useful insights without it?**

To work professionally in the world of aerodynamics and accurately understand and predict air flow, a reasonably deep understanding of mathematics is unfortunately required. However, I believe there are ways to understand most aspects of aerodynamic behavior without the need for any mathematics at all.

**What do you hope will be the main takeaway for those attending your workshop?**

I hope those attending will get a deeper understanding of just how much difference aerodynamics can make to the performance of a race or track day car. I hope they’ll come away with some clear ideas for ways to improve their own cars, based on sensible engineering practice rather than special research.

For those attending my second workshop, I hope they will get an impression of the main mechanisms that allow experts to use aerodynamics for the reduction of drag and increase in lift and downforce. Beyond that, I hope they’ll get a more detailed understanding of at least a few of the tricks used in high-level motorsport to manage air flow.

Catch Willem’s free-to-attend workshop (English Language), *How Formula 1 aerodynamics can help an extreme track day car*, on the first day of Professional MotorSport World Expo. And don’t miss his second presentation, *An aerodynamic masterclass*, the following day. View the full program here.

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