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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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)|
|Title:||Key Results from a Higher Harmonic Control Aeroacoustic Rotor Test (HART) in the German-Dutch Wind Tunnel|
|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|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L - no assignement|
|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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