Aerodynamic Testing

Aerodynamic experiments are used to determine aerodynamic forces and moments (in particular lift, drag, and pitch moment) as well as their behavior as a function of variables such as angle of attack or speed. The behavior of these forces is decisive for both flight or driving performance and flight or driving characteristics.

In most cases, the full-scale object cannot be directly tested in a wind tunnel. Therefore, scaled-down models, functional models, or generic bodies are often used. Designing aerodynamic tests thus requires in-depth knowledge of the relevant phenomena and extensive experience.

We primarily use our own wind and water tunnel facilities, but we also utilize commercial and industrial facilities—either as clients or as part of joint research projects or collaborations.

Aerodynamic testing of a full-scale road vehicle in an industrial wind tunnel.
Aerodynamic airfoil in the institute wind tunnel "MUB". Near the side walls, so-called "droop noses" can be seen, which serve to reduce the interaction with the wind tunnel side wall. Here, the pressure distribution is measured and the lift coefficient is determined from this. The profile is covered with tufts to recognize the structure of separated regions.
Aerodynamic testing of a vertical tail in the DNW-LLF wind tunnel. This is a 70%-scale tailplane in the 6m x 8m test section.

Selected References

SEITZ, A., HORN, M., BARKLAGE, A., SCHOLZ, P., BADRYA, C., RADESPIEL, R., Wind Tunnel Verification of Laminar Boundary Layer Control TSSD Concept, AIAA-Paper,, 2022 AIAA Aviation Forum, 27 June–1 July 2022, Chicago, USA

SCHOLZ, P., SINGH, V.M., GEBHARDT, A., LÖFFLER, S., WEISS, J., The Efficiency of Different Flow Control Methods on a Vertical Tail, AIAA 2020-1537, AIAA Scitech 2020, 6.-10, Jan. 2020, Orlando, USA, doi: 10.2514/6.2020-1537

KLEIN, S., SCHOLZ, P., RADESPIEL, R., A two-element high-lift airfoil in disturbed flow conditions, CEAS Aeronautical Journal, Vol.8, Nr.1, S. 79---91, 2017, DOI: 10.1007/s13272-016-0221-4

KLEIN, S., HOPPMANN, D., SCHOLZ, P., RADESPIEL, R., High-lift Airfoil Interacting with a Vortical Disturbance: Wind-Tunnel Measurements, AIAA Journal, Vol. 53, No. 6, pp 1681-1692, 2015, DOI: 10.2514/1.J053441