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VALIDATION OF AEROACOUSTIC PREDICTIONS USING THE HELINOVI DATABASE

Pidd, Mike und Dummel, Andreas und Falchero, Daniele und Prospathopoulos, John und Visingardi, Antonio und Voutsinas, Spyros G und Yin, Jianping (2006) VALIDATION OF AEROACOUSTIC PREDICTIONS USING THE HELINOVI DATABASE. In: European Rotorcraft Forum. 32st ERF 2006, AC03, 2006-12-09 - 2006-14-09, Maastricht (NL).

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Kurzfassung

The European research project HeliNOVI was aimed at the enhancement of helicopter performance, safety and ride comfort. Within this project one of the principal aims was the study of the aerodynamics and aeroacoustics of the tail rotor in order to reach a deeper knowledge of the phenomenology related to it. A key activity was the design of a wind tunnel test employing the existing powered 40%-scaled BO105 helicopter model for the generation of a high-quality data base for code validation and assessment of tail rotor noise reduction means and the use of this database for the validation of simulation codes. This validation ac-tivity included code-to-code and code-to-test comparisons using the predicted and wind tunnel results. A validation activity for acoustic prediction results from six of the HeliNOVI partners has been performed. A range of partner’s methods are applied for aircraft trim, wake modelling, aerodynamic solution and aeroacoustic solution are detailed. The numerical/experimental comparisons of the results obtained by the partners show a significant variation in level of agreement with the HeliNOVI experimental data, but generally capture some of the interac-tion effects between main and tail rotors. Force noise often dominates the results and it is found that the trim methodology is crucial to the acoustic prediction. Indeed the large varia-tion in the acoustic predictions is largely due to variation in the results of the preceding aero-dynamic analyses. The HeliNOVI database of experimental and predicted dynamic, aerody-namic and aeroacoustic data provides a valuable asset for further development and validation of acoustic prediction capabilities.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:VALIDATION OF AEROACOUSTIC PREDICTIONS USING THE HELINOVI DATABASE
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Pidd, MikeQinetiQ Ltd, United Kingdom
Dummel, AndreasEurocopter Deutschland (ECD), Germany
Falchero, DanieleEurocopter SAS (EC), France
Prospathopoulos, JohnNational Technical University of Athens (NTUA), Greece
Visingardi, AntonioCentro Italiano di Richerche Aerospaziali (CIRA), Italy
Voutsinas, Spyros GNational Technical University of Athens (NTUA), Greece
Yin, JianpingNICHT SPEZIFIZIERT
Datum:September 2006
Erschienen in:European Rotorcraft Forum
Status:veröffentlicht
Stichwörter:Complete rotorcraft, Aeroacoustics, Tail rotor noise validation, HeliNOVI
Veranstaltungstitel:32st ERF 2006, AC03
Veranstaltungsort:Maastricht (NL)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2006-12-09 - 2006-14-09
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Drehflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L RR - Drehflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Der leise und komfortable Drehflügler
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Dr.-Ing. Jianping Yin
Hinterlegt am:02 Jan 2007
Letzte Änderung:27 Apr 2009 13:22

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