- Tuesday July 24th, 2012
- Posted by: Christian Vartanian
- Category: Compétition
Since its opening in 2003, S2A’s full scale wind tunnel has become very attractive to test racing cars’ aerodynamics.
It allows representative and reliable simulation directly on the racing vehicle.
The tests are run with wheels rotating and a 1m wide or 1.2m wide belt rotating underneath the car.
The large test section (24m²) avoids blockage related issues and the test room’s length lets the wake develop itself freely.
The tunnel’s flow quality, the accuracy of the balance and the stifness and discretion of the fixation system ensure reliable and repeatable tests.
At last, the vehicle installation on the balance is simple and needs very few modifications on the car’s chassis.
To achieve wind tunnel tests, we must first link the car to the balance. For racing cars, we use a 4point or a 2 point specific fixing device.
On single-seaters as F1, F3, GP2, Renault Formulas, etc, we implement the 2-point fixation system. This is stiff, reliable and easy to mount. The vehicle is free to move vertically. The drag force is conducted through the fixing although the downforces are driven to the sensors through the wheels, themselves positioned on the rotating devices.
These tests are generally run at 160km/h but windspeed can be increased till 200km/h. The minimum rotating ground clearance is 4mm.
The fixing connecting the car’s chassis to the balance’s strut-jacksis more classical. This method maintains the car very well at its wanted position and allows controlled posture changes.
The turntable can add some crosswind up to 30°.
Our pressure scanning device can do up to 256 channels simultaneously.
The rotating ground is 1m wide as standard but it is possible to install a 1.2m wide device if the vehicle’s track allows it.