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Helicopter Rotor Impulsive Noise: Sources and Radiation

Heller, H. (1994) Helicopter Rotor Impulsive Noise: Sources and Radiation. 1994 NATO/CCMS Symposium on Aircraft Noise Abatement Receiver Technol ogy, 16.-20. Mai 1994, Baltimore, Maryland, USA.

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Abstract

The understanding of helicopter rotor noise - impulsive noise in particular - has recently been substanially furthered through the conduct of several major experimental programs in the course of which a large data base on rotor noise has been acquired. The such programs was founded on the recognition that there existed a fundamental lack in the understanding of the relationship of operational/geometric rotor parameters and the ensuing unsteady aerodynamic pressures as occuring on the blade surface on the one hand, and of the relationship of such blade surface pressures and the resulting rotor acoustic radiation on the other hand. To this end, the European Community recently launched a dedicated research effort within the framework of their"BRITE/EURAM-initative in Aeronautical Research" in the area of rotor aeroacoustics under the acronym "HELINOISE".

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1994, pages=20,
Title:Helicopter Rotor Impulsive Noise: Sources and Radiation
Authors:
AuthorsInstitution or Email of Authors
Heller, H.UNSPECIFIED
Date:1994
Status:Published
Keywords:Rotor Noise Source Mechanisms, Wind Tunnel Rotor Aeroacoustic Tests, Rotor Noise Prediction and Reduction, Rotor Harmonic and Broadband No ise, Tail Rotor Noise, Blade Pressures, Rotor Impulsive noise (BVI + High Speed)
Event Title:1994 NATO/CCMS Symposium on Aircraft Noise Abatement Receiver Technol ogy, 16.-20. Mai 1994, Baltimore, Maryland, USA
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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