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 - Geyer, Thomas A1 - Czwielong, Felix A1 - Krömer, Florian A1 - Pannert, Wolfram A1 - Merkel, Markus A1 - Becker, Stefan T1 - Permeable Leading Edges for Airfoil and Fan Noise Reduction in Disturbed Inflow T2 - AIAA Journal Y1 - 2021 UR - https://arc.aiaa.org/doi/10.2514/1.J060396 U6 - https://doi.org/10.2514/1.J060396 SN - 1533-385X VL - 59 IS - 12 SP - 4969 EP - 4986 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 - TY - GEN A1 - Ocker, Christof A1 - Czwielong, Felix A1 - Geyer, Thomas A1 - Merkel, Markus A1 - Becker, Stefan T1 - Strukturierte Porosität zur Lärmminderung von Axialventilatoren T2 - Fortschritte der Akustik - DAGA, 47. Jahrestagung für Akustik, 15.-18. August 2020 in Wien Y1 - 2021 UR - https://www.researchgate.net/publication/355145190_Strukturierte_Porositat_zur_Larmminderung_von_Axialventilatoren SP - 1512 EP - 1515 ER - TY - GEN A1 - Czwielong, Felix A1 - Berchtenbreiter, Benedikt A1 - Ocker, Christof A1 - Geyer, Thomas A1 - Stockmeier, Gabriel A1 - Merkel, Markus A1 - Becker, Stefan T1 - On the Application and Limitations of Sound-Absorbing Materials for Axial Fan Blades T2 - FAN 2022 – International Conference on Fan Noise, Aerodynamics, Applications and Systems Y1 - 2022 UR - https://tuprints.ulb.tu-darmstadt.de/21725/1/fp-44-CZWIELONG.pdf ER -