旋转桨叶表面压力反演试验

为了验证旋转桨叶表面压力的反演计算方法,搭建了旋转桨叶表面压力反演试验平台,对一套二叶螺旋桨的表面压力开展了反演试验。通过传声器阵列测量螺旋桨的远场噪声,利用Kulite压力传感器和离线式采集器测量桨叶表面的静压,并与计算结果进行对比。结果表明：在所研究的工况范围内,计算结果与试验结果吻合较好,趋势基本一致;其中两个测点的试验结果与计算结果误差在1%以内,精度很高;另两个测点的对比差值较大,主要是压力传感器安装工艺误差所导致的。

Inversion test of rotating blade surface pressure

In order to verify the inversion calculation method of the surface pressure of the rotating blade, an inversion test platform for the surface pressure of the rotating blade was built, and the inversion test for the surface pressure of a set of two-blade propellers was carried out. The far-field noise of the propeller was measured by a microphone array, and the static pressure on the blade surface was measured by a Kulite pressure sensor and an offline collector, and then compared with the calculated results. The results showed that under the working conditions studied, the calculated results were in good agreement with the experimental results, and the trend was basically the same; the error between the experimental results and the calculated results of two measuring points was within 1%, and the accuracy was very high; the contrast difference between the points was large, which was mainly caused by the installation process error of the pressure sensor.