Today we are in Marknesse at DNW and Royal NLR.
To test the cars from TU Delft, Twente and HAN.
We placed our cars in the windtunnel and put them to the test...
...to see which car is the most aerodynamic.
The race this year was cancelled by Shell.
So, in this way, we really got the opportunity to...
...somewhat have a race to compete against the other big teams in the Netherlands.
And in this way, you can see if the things you thought were true are actually true.
I am Raymond van der Meer
I represent Royal NLR in The Hague and Brussels. 
This windtunnel is size-wise not comparable with the windtunnels in Delft and Eindhoven.
We can test with smoke, we can place the cars in different angles.
When you look at the aerodynamic shape of a car, there are two things that are important.
Frontal surface and the CD constant...
...which is basically the thing that says whether the shape is aerodynamic or not.
The flow that is coming out of the windtunnel...
...you want that to follow your car as smoothly as possible.
We also saw that pretty nicely with the tufts.
We tried to work with the luisterbuis
This is a device with which you can hear where there is a transition of flow.
So you hear sort of a "kgggggg"-sound where the flow is coming into the luisterbuis.
So that is how we can see the transitions of the flow.
Well, the result that I'm most proud of is that we definitely learned a lot.
It definitely surprised us a little bit how good it actually was.
We saw that small changes didn't make the difference.
We thought that wheelcaps were extremely important.
But then we took them off and it made no difference.
There's definitely some kind of competition because...
...obviously we want to beat each other and show that we're better at what we're doing.
On the other hand, we are all striving for the best car possible.
So we can definitely learn from each other.
When you're here, you're more like friends.
You're goofing around the whole day...
...you're just having fun.
And we're actually building something.
It's not just theoretical, we are actually building something.
We've all worked so, so hard this year.
And I'm also so very proud of our team.
It's definitely something that I'd recommend to give up a full year for.
There are definitely sleepless nights...
...but it's all worth it.
