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Jente, Christian (2022) Porous flap trailing edges for the reduction of jet-flap interaction noise. ENODISE/DJINN/INVENTOR Public Workshop "Advanced Porous Treatment, liners and metamaterials for engine and airframe noise mitigation", 2022-11-07, Aachen, Deutschland.
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Abstract
This presentation defines jet-flap interaction in terms of a general problem statement, geometry, aerodynamics and acoustic effects. The jet-flap interaction noise delta defines the noise reduction potential. Noise reduction is achieved with the help of a porous flap with and without cover mesh. The noise reduction performance is shown for jet speeds between Mj=0.45 and 0.76, for the full spectrum as well as its decomposition into broadband-like and tonal parts. The additional cover mesh shows an exceptional performance and is recommended for future use.
| Item URL in elib: | https://elib.dlr.de/189783/ | ||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||
| Title: | Porous flap trailing edges for the reduction of jet-flap interaction noise | ||||||||
| Authors: |
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| Date: | 7 November 2022 | ||||||||
| Refereed publication: | No | ||||||||
| Open Access: | Yes | ||||||||
| Gold Open Access: | No | ||||||||
| In SCOPUS: | No | ||||||||
| In ISI Web of Science: | No | ||||||||
| Page Range: | pp. 1-21 | ||||||||
| Status: | Published | ||||||||
| Keywords: | Jet-flap interaction noise reduction porous materials | ||||||||
| Event Title: | ENODISE/DJINN/INVENTOR Public Workshop "Advanced Porous Treatment, liners and metamaterials for engine and airframe noise mitigation" | ||||||||
| Event Location: | Aachen, Deutschland | ||||||||
| Event Type: | Workshop | ||||||||
| Event Date: | 7 November 2022 | ||||||||
| Organizer: | RWTH Aachen | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | Efficient Vehicle | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L EV - Efficient Vehicle | ||||||||
| DLR - Research theme (Project): | L - Aircraft Technologies and Integration | ||||||||
| Location: | Berlin-Charlottenburg , Braunschweig | ||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Technical Acoustics Institute of Propulsion Technology > Engine Acoustic | ||||||||
| Deposited By: | Jente, Christian | ||||||||
| Deposited On: | 11 Nov 2022 11:13 | ||||||||
| Last Modified: | 24 Apr 2024 20:51 |
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