The turbine department shares the intention of DNW (German Dutch Wind Tunnels) to obtain, together with close partners (NLR, DLR), the full design and manufacturing competence for so called Turbine Powered Simulators (TPS). These TPS systems are usually mounted on big scale and highly detailed airframe models for wind tunnel usage in order to simulate the geometric and aerodynamic impact of real aero engines to the airframe flow regime. Functionally, they consist of just a fan in the inlet and a turbine to propel it. Cold, pressurized air is fed internally through the airframe model and independent of the external fan flow to the TPS turbine. TPS dimensions are small and therefore especially the axial flow turbine with typical diameters of just a few centimeters turns out to be a very challenging component.
The turbine department already designed two dedicated, small axial turbines for different TPS systems by using their in-house process chain and tools on request of DNW. These were complete designs from scratch all the way to three dimensional blade geometries in an annulus ready for CAD workflow and finally manufacturing at DNW/NLR.
By jointly working on these projects and manufacturing of real prototype components for commercial wind tunnel use, a complete system design competence for TPS is created at DNW/DLR/NLR that in Europe can only be found at Airbus or formerly at some sub-suppliers, and which at the same time yields independency from these companies for DNW when offering wind tunnel usage to international customers.