Low Speed Open Jet

• Investigation of the aeroacoustic formation mechanism of different test objects in a flow
• Aerodynamic investigation of test objects in an open jet
• Testing and optimization of acoustic and aerodynamic measurement technologies
• Development and testing of aeroacoustic measurement and analysis methods
• Validation of numerical simulation models (CAA)

Currently, the test rig is used for the joint research project Smart Blades. In the project, detailed aeroacoustic and aerodynamic investigations are performed on a scaled airfoil with a trailing edge flap in the open jet. The main foci of the current study are the higher global sound emission of the flapped airfoil, the sound formation at the side edge of the flap and also the relationship between sound formation and characteristic flow parameters.

In addition, the test rig is used to enhance measurement instrumentation, techniques and algorithms. As an example, the established beamforming technique is improved in terms of higher order solutions and computational time. Furthermore, a completely robot-supported measurement of an open jet is tested, to decrease expensive measurement time and save measurement resources.