Reference project WT334

Bundeswehr University Munich

The WT334 wind tunnel was built for the Bundeswehr University in Munich. The wind tunnel is characterized by the large test section as well as the high flow speed and the low degree of turbulence.

Link to website of UNI Bundeswehr


  • Large testsection 600x300x1500 (HxWxL)
  • Non-expending corners
  • Long Diffuser


Basic structure
The WT334 consists of a steel profile welded construction and galvanized sheet metal. The additional painting gives the wind tunnel an attractive look and is additionally protected against corrosion. Large inspection hatches in all relevant segments make it easy to enter the interior of the wind tunnel.

The WT334 is driven by a vibration-decoupled axial fan. The fan, which is mounted on spring anti-vibration mounts, is connected to the wind tunnel via canvas flanges. This ensures quiet system operation.

Flow preparation
The long diffusers, whose small opening angle counteracts flow separation, open into non-expanding corners. The wind tunnel has an extra-large screening chamber. This contains two sieves at an optimal distance from each other. These non-divided stainless steel sieves are accessible via inspection hatches for easy cleaning. A honeycomb rectifier with a length-to-diameter ratio of 8:1 further reduces the swirl of the flow. In a nozzle whose nozzle geometry corresponds to a fifth-order polynomial, the flow is accelerated and any turbulence that may be present is suppressed.

The measurement in the wind tunnel is carried out in the closed test section. The side windows of the test section allow the entire measuring height to be viewed, the window frames close to the floor and roof panels of the measuring chamber. If necessary, the measuring section can be equipped with a wind tunnel scale.


Design type Göttinger type, lying
Measuring crosssection 600 x 300 mm
Measuring length 1500 mm
Topspeed 55 m/s
Turbulence level 0,48 %

Datasheet WT334