NASA-Langley Research Center
An Experimental Investigation of Three-Dimensional Trailing Edge Noise
Sponsored by NASA-Langley Research Center
Last Modified: May 15th 2008
Investigators
Student Research Assistants
Description
A NACA 63-215 Mod-B airfoil with a thickened trailing edge has been fabricated for the UF Aeroacoustic Flow Facility (UFAFF), with sufficient span to allow for a significant sweep angle within the facility test section. The model has undergone baseline characterization for a two-dimensional installation, and differing measurement and analysis techniques for airframe noise have been tested and debugged with it. Laser-based flow measurements must be performed to adequately characterize steady and unsteady flow properties in the trailing-edge region of the model. Unsteady pressure transducers installed near the trailing edge region will allow for correlation of wall pressure fluctuations with farfield acoustic measurements. All measurements will be repeated for a swept-wing configuration.
Publications

Bahr, C.J., Yardibi, T., Liu, F., and Cattafesta, L., "An Analysis of Different Measurement Techniques for Airfoil Trailing Edge Noise," 14th AIAA/CEAS Aeroacoustics Conference, Vancouver, Canada, AIAA 2008-2957, May 2008. (Abstract)