Technical Data
| Aeroacoustics vehicle wind tunnel (1:1) |
Model wind tunnel
(1:3,5-1:5) |
|
| Dimensions of nozzle (WxH) | 5.8 m x 3.87 m | 1.575 m x 1.05 m |
| Exit area of nozzle | 22.45 m² | 1.654 m² |
| Contraction ratio | 4.41 | 4.95 |
| Length of open-nozzle test section | 9.95 m | 2.585 m |
| Diameter of axial fan | 7.1 m | 2.0 m |
| Operating output | 2.95 MW (335 1/min) | 335 kW (1050 1/min) |
| Max. flow velocity | 255 km/h | 288 km/h |
| Displacement heigth of boundary layer in the center of the ground plane (x=0) | ||
| - without boundary layer influence | 15.5 mm | 4.5 mm |
| - with boundary layer pre-suction | 7 mm | 2.4 mm |
| - with road simulation | Block profile | 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) | - |
- Layout of aeroacoustics vehicle wind tunnel (1:1)
- Layout of model wind tunnel (1:4/1:5)
