Experimental Study on Full Scale Turbo-prop Landing Gear Noise and Control Method
An experimental research on simplified turbo-prop aircraft landing gear noise was carried out in 2m aero-acoustic wind tunnel to study the characteristic of baseline and noise control strategy,the measurement content includes steady pressure,dynamic pressure,surface acoustic loading,1/3 polar arc directivity,far-field wall directivity array,horizontal and vertical phased array.The influence of noise control strategy on noise characteristic is explained from aerodynamic and aero-acoustic aspect.Test results verified that cavity filament can reduce the overall noise level by cancelling the Rossiter-type tone nosie.
turbo-proplanding gearaero-acousticsource localizationnoise control
NETL
NSTL
万方数据
