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Splettstößer, W. R. und Schultz, K.-J. und Kube, R. und Brooks, T.F. und Booth, Jr., E.R., und Niesl, G. und Streby, O. (1994) A Higher Harmonic Control Test in the DNW to Reduce Impulsive BVI Noise. Journal of the American Helicopter Society, 13. Oktober 1994, Vol. 39 (4), Seiten 3-13.
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Kurzfassung
A model rotor acoustic test was performed to examine the benefit of higher-harmonic control (HHC) of blade pitch to reduce blade-vortex interaction (BVI) impulsive noise. A 40-percent dynamically scaled, four-bladed model of a BO-105 main rotor was tested in the German-Dutch Wind Tunnel (DNW). Acoustic measurements were made in a large plane underneath the rotor employing a traversing in-flow microphone array in the anechoic environment of the open test section. Noise characteristics and noise directivity patterns as well as vibratory loads were measured and used to demonstrate the changes when different HHC schedules (different modes, amplitudes, phases) were applied. Dramatic changes of the acoustic signatures and the noise radiation directivity with HHC phase variations were found.
| elib-URL des Eintrags: | https://elib.dlr.de/36310/ | ||||||||||||||||||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
| Zusätzliche Informationen: | LIDO-Berichtsjahr=1994, | ||||||||||||||||||||||||||||||||
| Titel: | A Higher Harmonic Control Test in the DNW to Reduce Impulsive BVI Noise | ||||||||||||||||||||||||||||||||
| Autoren: |
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| Datum: | 1994 | ||||||||||||||||||||||||||||||||
| Erschienen in: | Journal of the American Helicopter Society, 13. Oktober 1994 | ||||||||||||||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
| Band: | Vol. 39 | ||||||||||||||||||||||||||||||||
| Seitenbereich: | Seiten 3-13 | ||||||||||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
| Stichwörter: | Blatt-Wirbel-Interaktionslärm, Rotorimpulslärm, Lärmreduktion, höherharmonische Blattsteuerung, Rotorvibration | ||||||||||||||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||||||
| HGF - Programmthema: | keine Zuordnung | ||||||||||||||||||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||||||
| DLR - Forschungsgebiet: | L DT - Drehflüglertechnologien | ||||||||||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Der leise und komfortable Drehflügler (alt) | ||||||||||||||||||||||||||||||||
| Standort: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Institut für Entwurfsaerodynamik | ||||||||||||||||||||||||||||||||
| Hinterlegt von: | DLR-Beauftragter, elib | ||||||||||||||||||||||||||||||||
| Hinterlegt am: | 03 Apr 2006 | ||||||||||||||||||||||||||||||||
| Letzte Änderung: | 27 Apr 2009 10:05 |
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