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Schultz, K.-J. and Splettstößer, W. and Junker, B. and Wagner, W. and Schöll, E. and Arnaud, G. and Mercker, E. and Pengel, K. and Fertis, D. (1996) A Parametric Wind Tunnel Test on Rotorcraft Aerodynamics and Aeroacoustics (HELISHAPE) - Test Documentation and Representative Results. DLR-Interner Bericht. 129-96/25. 350 S.
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Abstract
In the framework of a major European research programme on rotorcraft aerodynamics and acoustics (HELISHAPE) a parametric model rotor test was condicted in the open test section of the DNW using the MWM test rig of DLR and a highly instrumented model of a fully articulated ECF rotor equipped with blades of advanced design and two exchangeable blade tips. One set of blade tips (7A) was rectangular, the other one (7AD1) of swept-back parabolic/ anhedral shape. The objectives of this experimental research were to evaluate noise reduction techniques (conceptionally by variation of rotor speed, dedicated tip shapes and advanced airfoils as well as operationally by identifying low noise - BVI-minimizing decent procedures) and to validate the partners aerodynamic and aeroacoustic codes. A comprehensive set of simultaneous acoustic and aerodynamic blade surface pressure data as well as blade dynamic and performance data was measured. In addition, valuable.
| Item URL in elib: | https://elib.dlr.de/36439/ | ||||||||||||||||||||||||||||||||||||||||
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| Document Type: | Monograph (DLR-Interner Bericht) | ||||||||||||||||||||||||||||||||||||||||
| Additional Information: | LIDO-Berichtsjahr=1996, | ||||||||||||||||||||||||||||||||||||||||
| Title: | A Parametric Wind Tunnel Test on Rotorcraft Aerodynamics and Aeroacoustics (HELISHAPE) - Test Documentation and Representative Results. | ||||||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 1996 | ||||||||||||||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||||||||||||||
| Number of Pages: | 350 | ||||||||||||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||||||||||||
| Keywords: | Helicopter impulsive noise, aeroacoustic rotor tests, blade surface pressures, noise directivity, blade-tip variations, laser light .... | ||||||||||||||||||||||||||||||||||||||||
| 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 (old) | ||||||||||||||||||||||||||||||||||||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik | ||||||||||||||||||||||||||||||||||||||||
| Deposited By: | DLR-Beauftragter, elib | ||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 03 Apr 2006 | ||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 27 Apr 2009 10:06 |
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