Merino-Martinez, Roberto und Bertsch, Lothar und Simons, Dick und Snellen, Mirjam (2016) Analysis of landing gear noise during approach. 22nd AIAA/CEAS Aeroacoustics Conference, 2016-06-01, Lyon, France. doi: 10.2514/6.2016-2769.
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Offizielle URL: https://arc.aiaa.org/doi/abs/10.2514/6.2016-2769
Kurzfassung
Airframe noise is becoming increasingly important during approach, even reaching higher noise levels than the engines in some cases. More people are affected due to low flight altitudes and fixed traffic routing associated with typical approaches. Formost air- craft types, the landing gear system is a dominant airframe noise source. However, this element can only be modeled in an approximate manner in wind tunnel experiments. In this research, flyovers of landing aircraft were recorded using a 32 microphone array. Fun ctional beamforming was applied to analyze the noise emissions from the landing gear system. lt was confirmed that for some aircraft types, such as the Airbus A320 and the Fokker 70, the nose landing gear is a dominant noise source du ring approach. The correlation between the noise levels generated by the landing gear and the aircraft velocity was found to be significant, explai ning about 70% of the varia bility found in the noise levels, which is in good agreement with all known theory. Moreover, the experimental resu lts for the Airbus A320 measurements were compared with those obtained using the DLR system noise prediction tool PANAM. Whereas the total aircraft noise levels were in good agreement. the measurements indicate a higher contribution from the nose landing gear noise compared to the predictions.
elib-URL des Eintrags: | https://elib.dlr.de/113447/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Zusätzliche Informationen: | https://arc.aiaa.org/ | ||||||||||||||||||||
Titel: | Analysis of landing gear noise during approach | ||||||||||||||||||||
Autoren: |
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Datum: | 2016 | ||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
DOI: | 10.2514/6.2016-2769 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Aircraft noise prediction, array measurements, landing gear noise | ||||||||||||||||||||
Veranstaltungstitel: | 22nd AIAA/CEAS Aeroacoustics Conference | ||||||||||||||||||||
Veranstaltungsort: | Lyon, France | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsdatum: | 1 Juni 2016 | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation und Validierung (alt) | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO | ||||||||||||||||||||
Hinterlegt von: | Bachmann, Barbara | ||||||||||||||||||||
Hinterlegt am: | 15 Sep 2017 12:39 | ||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:18 |
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