| 1. | Finally , the experiments on the rotor bvi noise are conducted both in an aeroacoustic laboratory and at outdoors , and the noise characteristics at different locations are measured on different blade - tip mach numbers , collective pitch angles and rotor configurations . based on the experimental results , some new conclusions are presented
本文第七章分别在“消声室”和外场进行了模型旋翼的桨-涡干扰噪声实验，对不同马赫数、不同桨距角以及不同旋翼布置情况下的不同测点进行了噪声测量，得出了一些新的结论。 |
