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Key Results from a Higher Harmonic Control Aeroacoustic Rotor Test (HART) in the German-Dutch Wind Tunnel

Splettstößer, W.R. and Kube, R. and Seelhorst, U. and Wagner, W. and Boutier, A. and Micheli, F. and Merker, E. and Pengel, K. (1995) Key Results from a Higher Harmonic Control Aeroacoustic Rotor Test (HART) in the German-Dutch Wind Tunnel. Twenty-first European Rotorcraft Forum, August 30.-September 1, 1995, St. Petersburg, Russia.

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Abstract

In a major cooperative research program within existing US-German and US-French Memoranda of Understanding (MoU's), a comprehensive study was conducted with a 40-percent geometrically and dynamically scaled BO-105 main rotor operated in the open-jet anechoic test section of the German-Dutch Wind Tunnel (DNW). The objectives of the program were to improve the physical understanding and the mathematical modelling of the effects of the higher harmonic blade pitch control technique on blade-vortex interaction (BVI) impulsive noise and vibration reduction. A unique set of acoustic, aerodynamic,dynamic response, performance, and rotor wake data were acquired witha pressure and strain gauge instrumented blade and by application of non-intrusive measurement techniques. This paper is focused on the experimental part of this research program, termed Higher-harmonic- control Aeroacoustic Rotor Test (HART) which was jointly performed by researchers from the US Army Aeroflightdynamics Directorate (AFDD) and NASA Langley, the DNW, and the French and German Aeropace Research Establishments ONERA and DLR. The applied test procedures and obtained key results are presented.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1995,
Title:Key Results from a Higher Harmonic Control Aeroacoustic Rotor Test (HART) in the German-Dutch Wind Tunnel
Authors:
AuthorsInstitution or Email of Authors
Splettstößer, W.R.UNSPECIFIED
Kube, R.Institut für Flugmechanik
Seelhorst, U.Institut für Strömungsmechanik
Wagner, W.Institut für Aeroelastik
Boutier, A.ONERA
Micheli, F.ONERA
Merker, E.DNW
Pengel, K.DNW
Date:1995
Status:Published
Keywords:helicopter, rotor test, aeroacoustic, higher harmonic control, blade vortex interaction (BVI), noise reduction, dynamic response.
Event Title:Twenty-first European Rotorcraft Forum, August 30.-September 1, 1995, St. Petersburg, Russia
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
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
Institute of Flight Systems > Institut für Flugmechanik
Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik
Institute of Aeroelasticity
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:52

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