DGLR-Publikationsdatenbank - Detailansicht
Titel:
Prevention of Buzz-saw Noise by Acoustic Lining
Autor(en):
P. Sijtsma
Zusammenfassung:
Expressions are derived describing the generation of buzz-saw noise, occurring upstream of a ducted rotor with supersonic relative tip speed. In contrast with earlier work on this matter, a fully three-dimensional, nori-linear theory is used, in which the effect of acoustic treatment is included. In the sound spectrum of a hard-walled duct, the theory predicts peaks at close-to-resonance frequencies. Moreover, a substantial suppression of buzz-saw noise is predicted for a duct wall with acoustic lining, depending on the liner characteristics. Calculations with estimated input are in good agreement with measurements
Veranstaltung:
First Joint CEAS/AIAA Aeroacoustics Conference, München, 1995
Medientyp:
Conference Paper
Sprache:
englisch
Format:
21,0 x 29,7 cm, 9 Seiten
Veröffentlicht:
DGLR-Bericht, 1995, 1995-01, First Joint CEAS/AIAA Aeroacoustics Conference - Proceedings; S.575-583; 1995; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Preis:
NA
ISBN:
ISSN:
Kommentar:
Klassifikation:
Stichworte zum Inhalt:
aeroacoustics
Verfügbarkeit:
Bibliothek
Veröffentlicht:
1995
Dieses Dokument ist Teil einer übergeordneten Publikation:
First Joint CEAS/AIAA Aeroacoustics Conference - Proceedings