loading noise

Unsteady loading noise of counter-rotating propeller

反旋桨扇非定常负荷噪声的研究

By the method developed, both rotor thickness and loading noise are computed. The influence of different design parameters on the rotational noise, such as rotor speed, blade number and rotor diameter, are also investigated.

应用所建立的方法，分别进行了旋翼厚度和载荷噪声的计算，并对旋翼转速、桨叶片数、旋翼直径等不同设计参数对旋转噪声的影响进行了研究，得到了一些有实际意义的结果。

The unsteady Loading noise generated by interaction of a front rotor wake with an aft rotor in a counter-rotating ( CR) propeller is analyzed and the noise radiation formulae are derived.

本文着重研究了反旋桨扇前排转子尾流与后排转子干涉形成的非定常负荷噪声，并与试验结果作了对比。

The source of the subsystem response spectrum peak is studied using statistical energy analysis ( SEA) and mass loading effect: A review is made about drawback of acoustic noise test spectrum ( trapezoid)( MIL STD 810E 515.4 and GJB 150 17);

本文应用统计能量分析（SEA）及质量载荷效应，研究了子系统响应谱峰值的来历；评述了MIL-STD-810E-515.4及国军标GJB-150-17中噪声试验（梯形）谱的缺陷；

With the development of machine's high speed, over loading, lower noise, the bevel wheel is applied more and more at large.

随着机器向高速、重载、低噪音方向的发展，斜齿轮的应用越来越普遍。

Study of Marine Propeller Loading Noise

螺旋桨负荷噪声研究