高揚力装置スラット騒音低減デバイス(コブ・フィラー)の研究(騒音(2),一般講演)

概要

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The purpose of this study is to design noise reduction devices for leading-edge slat which is called as a slat cove filler (SCF), from both aerodynamic and acoustic points of view. From the previous studies, a SCF seems to have an effect on reducing noise by forming continuous shape instead of a slat cusp configuration. However, some studies indicate decrease of aerodynamic performance when SCF is attached. Since the primary feature of high-lift-devices is to increase aerodynamic performance, reduction of aerodynamic performance is not acceptable. To understand the flow physics, numerical and experimental studies are performed. Based on the numerical simulations, it became apparent that if the SCF is designed while maintaining the slat gap region, the aerodynamic performance will be the same as that of the baseline. Wind tunnel experiments are performed for verification purpose. The SCF designed in this study satisfies both aerodynamic and acoustic performance successfully.
2007-08-06