Design of large climatic wind tunnel

In the large CWT, featuring a test section length of 100 m and an adjustable temperature range from -50°C to +60°C, a maximum wind speed of 300 km/h can be achieved.

The roller dynamometer installed in the front part of the test section allows braking and traction tests to be performed on rail vehicle bogies. The roller dynamometer consists of two pairs of rollers; one roller pair can be driven or braked (power max. 850 kW), while the other roller pair is a non-driven axle, whose distance to the driven roller pair can be adjusted.

An exhaust system with two outlets located each in the ceiling and wall in the front third of the test section is designed to discharge exhaust gases from combustion engines. If one ceiling and one wall exhaust outlet is used, the exhaust air volume discharged can be adjusted from 0.32 to 3.2 kg/s at 200°C. If only one wall exhaust outlet is used an exhaust air volume of up to 0.2 kg/s at 200°C is possible.