螺旋桨模型的边缘噪声与水动力载荷

Y. Yegorov, P. Ivanov, N. Marinich
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引用次数: 0

摘要

研究对象和目的。本文讨论了螺旋桨模型。本研究的目的是了解螺旋桨上的水动力载荷对其高频非空化噪声辐射(边缘噪声)的影响。材料和方法。俄罗斯和外国边缘噪声规范分配方法的比较分析。一系列具有不同水动力载荷的螺旋桨模型的边缘噪声测量。主要结果。该研究得出了一些理论提示,表明水动力载荷(如无量纲推力系数Kt)对边缘噪声的影响。在这项工作中进行的实验研究已经证实,这种方法对螺旋桨模型是有效的。结论模型试验已经证实,边缘噪声取决于螺旋桨上的水动力载荷(即其推力系数),并表明了螺旋桨噪声缓解的最佳Kt范围。
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Edge noise vs hydrodynamic load on propeller model
Object and purpose of research. This paper discusses propeller model. The purpose of the study was to understand the effect of hydrodynamic load on the propeller upon its high-frequency non-cavitation noise radiation (edge noise). Materials and methods. Comparative analysis of Russian and foreign methods for assignment of edge noise norms. Edge noise measurements for a series of propeller models with different hydrodynamic load. Main results. The study yielded certain theoretical hints suggesting the effect of hydrodynamic load (as non-dimensional thrust coefficient Kt) upon edge noise. Experimental studies performed in this work have confirmed that this approach is valid for propeller models. Conclusion. Model tests have confirmed that edge noise depends on hydrodynamic load on the propeller (i.e. its thrust coefficient), as well as indicated tentative Kt range optimal for propeller noise mitigation.
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