According to mechanism of low frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is carried out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
According to mechanism of low-frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is worked out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
This paper makes an exposition of the theory, method and the details concerned of the cabin noise for quantitative analysis and evaluation, and numerical results are given.
本文阐述了舱内噪声定量分析及预估的理论、方法和有关技术问题，并进行了数值计算。
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