An experimental study of airfoil tip vortex formation noise
Material type:
TextOnline resources:
In:
Acoustics 2016 Proceedings 9-11 November 2016, Brisbane, AustraliaAbstract: This paper explores the noise produced by three-dimensional vortex flow at the tip of an airfoil. This noise source is an important component of the noise produced by aircraft high-lift systems. To investigate tip vortex formation noise, aeroacoustic measurements have been taken of a finite airfoil with flat ended tip in an anechoic wind tunnel at a range of flow speeds and angles of attack. Sound maps taken with a beamforming array are presented to show contributions of flow at the airfoil tip to overall airfoil noise production. Tip noise spectral data are also included to provide information about the nature of the noise source and scaling laws are developed of the noise generation process to model the noise data.
This paper explores the noise produced by three-dimensional vortex flow at the tip of an airfoil. This noise source is an important component of the noise produced by aircraft high-lift systems. To investigate tip vortex formation noise, aeroacoustic measurements have been taken of a finite airfoil with flat ended tip in an anechoic wind tunnel at a range of flow speeds and angles of attack. Sound maps taken with a beamforming array are presented to show contributions of flow at the airfoil tip to overall airfoil noise production. Tip noise spectral data are also included to provide information about the nature of the noise source and scaling laws are developed of the noise generation process to model the noise data.