TY - GEN A1 - Ocker, Christof A1 - Geyer, Thomas A1 - Czwielong, Felix A1 - Krömer, Florian A1 - Becker, Stefan A1 - Merkel, Markus A1 - Pannert, Wolfram T1 - Experimental Investigation of the Impact of 3D-Metal-Printed Perforated Leading Edges on Airfoil and Axial Fan Noise T2 - 26th AIAA/CEAS Aeroacoustics Conference, Virtual Event, 14 - 19 June 2020, virtual event Y1 - 2020 U6 - https://doi.org/10.2514/6.2020-2529 ER - TY - GEN A1 - Ocker, Christof A1 - Czwielong, Felix A1 - Geyer, Thomas A1 - Chaitanya, Paruchuri A1 - Merkel, Markus A1 - Becker, Stefan T1 - Permeable Structures for Leading Edge Noise Reduction T2 - 27th AIAA/CEAS Aeroacoustics Conference 2021, Virtual Event, August 2 - 6 2021 Y1 - 2021 U6 - https://doi.org/10.2514/6.2021-2192 ER -