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Experimental Results of the European HELINOISE Aeroacoustic Rotor Test

Splettstoesser, W.R. and Niesl, G. and Cenedese, F. and Nitti, F. and Papanikas, D.G. (1995) Experimental Results of the European HELINOISE Aeroacoustic Rotor Test. In: Beitrag im Journal of the American Helicopter Society Vol. 40, No. 2, pp. 3-14, April 1995, pp. 3-14. American Helicopter Society, 217 N. Washington Street, Alexandria VA 22314, USA.

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Abstract

In a cooperative research program between eight European partners, a 40% geometrically and dynamically scaled and highly instrumented model of the ECD (formerly MBB) BO 105 helicopter main rotor was tested in the open-jet anechoic test section of the German-Dutch Wind Tunnel (DNW) in the Netherlands. The primary objectives of this experimental study were 1) to improve the physical understanding of the impulsive rotor noise sources by correlating blade pressure and acoustic characteristics and 2) to provide an extensive airload and acoustic database for code validation purposes.Consequently, a comprehensive set of simultaneous acoustic and aerodynamic blade surface pressure data as well as blade dynamic and performance data were measured for the standard rotor with rectangular blade tips. In addition, initial quantitative information of the blade- vortecx miss distance during blade-vortex interaction (BVI) was obtained.

Document Type:Conference or Workshop Item (Paper)
Additional Information: institution=AHS, LIDO-Berichtsjahr=1995,
Title:Experimental Results of the European HELINOISE Aeroacoustic Rotor Test
Authors:
AuthorsInstitution or Email of Authors
Splettstoesser, W.R.UNSPECIFIED
Niesl, G.UNSPECIFIED
Cenedese, F.UNSPECIFIED
Nitti, F.UNSPECIFIED
Papanikas, D.G.UNSPECIFIED
Date:1995
Journal or Publication Title:Beitrag im Journal of the American Helicopter Society Vol. 40, No. 2, pp. 3-14, April 1995
Page Range:pp. 3-14
Publisher:American Helicopter Society, 217 N. Washington Street, Alexandria VA 22314, USA
Series Name:Vol. 40, No. 2
Status:Published
Keywords:Rotor impulsive noise, high speed compressiblility noise, blade surface pressures, blade loading, blade-vortex miss distance,
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):L - The Quiet and Comfortable Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:05

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