Dimensions and air flow 

Dimensions of nozzle (width x height)      

5.8 m x 3.87 m 

Exit area of nozzle

22.45 m²

Contraction ratio

4.41

Length of open-nozzle test section   

9.95 m

Diameter of axial fan

7.1 m

Operating output

3.3 MW (335 1/m)

Max. flow velocity

260 km/h

Displacement heigth of boundary layer in the center of the

ground plane (x=0)

 - without boundary layer influence

15.5 mm

 - with boundary layer pre-suction

7 mm

 - with road simulation

Block profile

Sound-pressure level of empty test section at 140 km/h:

 - Out-of-Flow

69.0 dB(A)

 - Inflow

71.5 dB(A)