Winter, Rene und Sinske, Julian und Norambuena, Marco und Zettel, Sebastian Florens (2023) High-resolution vibroacoustic characterization of DLR´s Falcon 2000LX ISTAR aircraft. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-023-00676-9. ISSN 1869-5590.
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Offizielle URL: https://link.springer.com/article/10.1007/s13272-023-00676-9
Kurzfassung
In the framework of CleanSky2’s Airframe project DA9, engine tonal noise is a cooperation between Dassault Aviation and DLR. The project aims to enhance the understanding and mitigation of engine-related tonal noise in the aircraft cabin. The presented work was done to get an in-depth understanding of the vibroacoustic behavior of DLR’s Falcon 2000LX ISTAR aircraft. A two and a half weeks long vibroacoustic ground test was conducted utilizing artificial shaker excitation and operational engine excitation. The responses were measured using a roving grid of accelerometers at more than 1200 positions, meaning a subset of about 250 sensors were installed at every given time and then moved along the fuselage in a predetermined way to get a high-resolution measurement of aircrafts fuselage. The accelerometer data were than processed to show operational deflections shapes and calculate experimental structural intensity vector fields to analyze the energy transfer through the structure for optimized placement of active or passive counter measures. Specifically, the transport of tonal frequencies generated by the engines was analyzed.
elib-URL des Eintrags: | https://elib.dlr.de/196766/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | High-resolution vibroacoustic characterization of DLR´s Falcon 2000LX ISTAR aircraft | ||||||||||||||||||||
Autoren: |
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Datum: | 24 August 2023 | ||||||||||||||||||||
Erschienen in: | CEAS Aeronautical Journal | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
DOI: | 10.1007/s13272-023-00676-9 | ||||||||||||||||||||
Verlag: | Springer | ||||||||||||||||||||
ISSN: | 1869-5590 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Engine Noise, Vibrations, Ground Testing, Structural Intensity | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Flugzeug und Validierung | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aeroelastik > Strukturdynamik und Systemidentifikation | ||||||||||||||||||||
Hinterlegt von: | Winter, Rene | ||||||||||||||||||||
Hinterlegt am: | 28 Aug 2023 10:29 | ||||||||||||||||||||
Letzte Änderung: | 19 Sep 2023 08:52 |
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