The 1:4/1:5 model wind tunnel, like the vehicle aeroacoustics wind tunnel, has a horizontal routing of the air flow with an open free-flow jet test section (Göttingen-type wind tunnel). In order to represent the air flow conditions of a vehicle driving on the road surface as realistically as possible, the test is also simulated with turning wheels and moving ground in the model wind tunnel. This is done using a 5-belt system, consisting of a middle moving belt and four wheel-turning mechanisms, combined with different boundary layer conditioning systems.

A fully automatic model manipulator is available for introducing the models. Flow field measurements with hot-wire, 3D laser Doppler anemometer or multi hole probes can be carried out with the 5-axis traversing device. The flow temperature can be regulated at constant values using a heat exchanger, which guarantees the dimensional stability of clay models.