泵喷推进器在某水下航行器降噪方面的应用

Application of Pump⁃jet Propulsor in Noise Reduction of Underwater Vehicle

摘要:

通过对某采用对转螺旋桨作为推进方式的水下航行器噪声进行深入分析，了解和掌握了其噪声特点。 针对对转螺旋桨在降噪方面的不足，对采用泵喷推进器降噪进行分析研究，提出水下航行器各装置降噪改进设想。 在综合考虑了鳍舵以及附体对航行噪声的影响，以及原产品对航行性能的要求后，对泵喷推进器进行了初步方案设计，采用该泵喷推进器有望使噪声降低 4 ~ 5 dB。

Abstract:

Through an in?depth analysis of the noise of an underwater vehicle which uses contra rotating propellers for propulsion， the noise characteristics of the underwater vehicle are understood and mastered． Aiming at the shortcomings of contra rotating propellers in noise reduction， this paper analyzes using pump?jet propulsor for noise reduction， and puts forward the idea of noise reduction for each device of underwater vehicle． After considering the influence of fin rudder and appendages on navigation noise and the requirements of original products for navigation performance， a preliminary design of pump?jet propulsor is carried out． The pump?jet propulsor is expected to reduce noise by 4 dB to 5 dB．