One of the goals of the Cluster of Excellence for Sustainable Aviation is to reduce emissions and energy consumption. The flow behaviour of aircraft, especially at the wings, plays a role in this. For experiments on this topic, the researchers use the Braunschweig Low-Speed Wind Tunnel (NWB) of the Foundation German-Dutch Wind Tunnel (DNW). The wind tunnel enables a very low degree of turbulence, so that boundary layer behaviour of the flow similar to that in free flight experiments can be simulated here.
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The sickle wing in the measurement section of the low-speed wind tunnel in Braunschweig. The 3D-printed suction panel was installed in the upper third of the wing and can be seen in grey. Image credit: Hendrik Traub/Braunschweig Technical University