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Parametric Design Studies of the Helicopter Rotor Noise using Variable-Fidelity Methods

Rabe, Dirk und Wilke, Gunther Andreas (2018) Parametric Design Studies of the Helicopter Rotor Noise using Variable-Fidelity Methods. 74th American Helicopter Society, 2018-05-14 - 2018-05-17, USA, Arizona, Phoenix.

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Kurzfassung

The current trend is to produce even quieter helicopters in order to increase public acceptance. While the ERATO and the from it evolved Blue Edge blade show that noise reduction can be achieved through a specific blade design; the task to arrive at such a design is lengthy. It roughly took 25 years from the wind tunnel campaign to the now flying H160 with this type of rotor design. In order to speed up the design process, it is necessary to quickly and accurately assess the quality of a given design. While a wide range of tools exists to predict rotorcraft noise, the validity as well as the accuracy per computational cost has not been fully evaluated. Recent CFD simulations are able to replicate the BVI noise event, yet are very costly in contrast to wake coupled comprehensive codes. This paper seeks the best method that fulfills the trade-off between speed and accuracy. Therefore, three different rotor wind tunnel models in descent flight are computed with six different ethods. Afterwards, a selection of these methods is utilized in a parametric study to further see how well the different methods can identify the best blade design. The most favored method is a panel method coupled with a free wake model including structural modelling from a comprehensive code, while CFD is recommended only to check the final design due to its high computational cost.

elib-URL des Eintrags:https://elib.dlr.de/125009/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Parametric Design Studies of the Helicopter Rotor Noise using Variable-Fidelity Methods
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Rabe, Dirkdirk.rabe (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wilke, Gunther AndreasGunther.Wilke (at) dlr.dehttps://orcid.org/0000-0002-1915-5307NICHT SPEZIFIZIERT
Datum:Mai 2018
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Aeroacoustics, Variable Fidelity Methods, Helicopter, CFD, HOST, UPM
Veranstaltungstitel:74th American Helicopter Society
Veranstaltungsort:USA, Arizona, Phoenix
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:14 Mai 2018
Veranstaltungsende:17 Mai 2018
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 - VicToria (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber, BS
Hinterlegt von: Rabe, Dirk
Hinterlegt am:14 Dez 2018 13:53
Letzte Änderung:24 Apr 2024 20:29

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