DGLR-Publikationsdatenbank - Detailansicht
Autor(en):
R. Wickersheim, M. Keßler, E. Krämer
Zusammenfassung:
In this study, fly-over noise measurements were conducted on a flight demonstrator equipped with distributed propulsion. Five distinct fly-over scenarios were executed, with noise data captured using an acoustic array. By utilizing GPS data and flight speed data, the noise signature of each fly-over was analyzed by segmenting the time signal into multiple sections. Furthermore, due to background noise, frequency ranges containing the blade passing frequencies were filtered from the raw signal. Combining the GPS, flight speed and acoustic data allowed for the reconstruction of noise carpets. The results show that all noise carpets exhibited a similar directivity pattern, with a distinct region of higher noise emission. Additionally, a background noise cancellation method was introduced, which did not affect the observed frequency range.
Veranstaltung:
Deutscher Luft- und Raumfahrtkongress 2024, Hamburg
Verlag, Ort:
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2024
Medientyp:
Conference Paper
Sprache:
englisch
Format:
21,0 x 29,7 cm, 7 Seiten
URN:
urn:nbn:de:101:1-2410161352472.264648377348
DOI:
10.25967/630146
Stichworte zum Inhalt:
Distributed Electric Propulsion, Acoustic Measurements, Aeroacoustics
Verfügbarkeit:
Kommentar:
Zitierform:
Wickersheim, R.; Keßler, M.; Krämer, E. (2024): Fly-Over Noise Measurements of a Distributed Propulsion Flight Demonstrator. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/630146. urn:nbn:de:101:1-2410161352472.264648377348.
Veröffentlicht am:
16.10.2024