In order to investigate the continuous flow through turbomachinery blading the institute set up a transonic test cascade wind tunnel. Within this test cascade turbomachinery blades can be arranged linearly (Linear Cascade – LinCa) or circumferentially (Annular Cascade - Anca). Optical access to the flow section is enabled through windows in the test rig. Together with pressure and temperature transducers modern laser-optical equipment is used for flow analysis in subsonic and transonic flows. For the linear arrangement the blade cascade can be exchanged easily so that various blading can be investigated.

For the annular setups the facility was designed to be compatible to the Transonic Test Turbine Facility (TTTF). This allows back-to-back tests of the turbine duct setups in two different machines with different inlet flow complexity.