模型螺旋桨唱音消除方法的试验研究

An experimental investigation on eliminating model propeller singing

模型螺旋桨噪声试验中,唱音是影响噪声测试与数据分析的主要干扰,必须予以消除。为此,开展了模型螺旋桨唱音消除方法的试验研究,试验中从改变模型螺旋桨叶片表面流态的角度设计了几种消唱方案,并完成噪声测量试验。文中对不同方案的噪声试验结果进行分析,并评估了各方案的消唱效果,为形成模型螺旋桨唱音消除方法建立了基础。

In the noise test of model propellers,singing is a major disturb which influences noise test and data analysis,and must be eliminated.In this paper,several schemes for eliminating model propeller singing are presented and designed to control the flow pattern of the blade faces.In order to evaluate the effect of eliminating propeller singing,the radiation noise of the model propellers was measured,and the measured results were analyzed and shown in this paper.