螺旋桨不会生锈但是会因为螺旋桨的空泡现象，对螺旋桨照成严重的侵蚀。
Whilecopper propeller does not rust, it also can be eroded seriously by cavitation.
研究螺旋桨空泡及其诱导的船体脉动压力的预报方法，对于减小其引起的船尾振动和辐射噪声是极其重要的。
It is very important to study methods for predicting propeller cavitation and induced fluctuations in order to reduce vibrations and noise on ships.
本文介绍上海交通大学空泡筒进行螺旋桨噪声试验研究情况及部份结果。
This article describes the propeller noise tests in JTU cavitation tunnel and some of these test results obtained.
结果表明，螺旋桨空泡噪声由连续谱和离散线谱组成。
It is shown that propeller cavitation noise is composed of continual spectrum and separable line spectrum.
最后讨论了新模拟方法在船后螺旋桨空泡与噪声模型试验中的应用。
Finally the application of the new modeling method to model test of cavitation and noise of propeller working behind is discussed.
本文给出了上海船研所空泡水筒的背景噪声和ITTC标准螺旋桨的噪声测量结果。
This paper gives the measurement results of the background noise in SSSRI cavitation Tunnel and the cavitation noise of the ITTC standard propeller model.
实效伴流的不均匀性是引起螺旋桨空泡、振动的主要原因之一。
The effective wake is one of the primary reasons of propeller cavitation and induced ship hull vibration.
螺旋桨空泡会降低螺旋桨性能，产生空化剥蚀和噪声，从而导致船体振动。
Propeller cavitation degrades propeller performance, erodes blade surfaces, produces noise, and causes vibration on the ship hull.
减压情况下，通过既改变空泡数又改变浸深比的多方案螺旋桨水动力性能试验来建立和完善半浸桨空化性能试验技术。
In depressurized condition, multi-scheme experiments of propeller hydrodynamics performance have also been accomplished under different number of cavity and ratio of submergence.
据此理论模型，导得螺旋桨空泡噪声谱的表达式。
On the basis of above theoretical model, the spectrum formula of propeller cavitation noise has been derived.
本文采用升力面理论预报螺旋桨非定常水动力性能及空泡性能。
This paper has adopted the lifting-surface method for the prediction of unsteady hydrodynamic performance and cavitation performance of propeller.
计算结果表明新剖面螺旋桨方案的空泡斗要比常规剖面的宽。
Calculations show that the cavitation-free bucket diagram of new blade sections is wider than the conventional NACA sections.
探讨舰船螺旋桨空泡噪声指数衰减型随机脉冲序列的理论模型。
The present paper deals with theoretical model of random sequence of exponential attenuate acoustic pulses caused by ship propeller cavitation noise.
阐述了螺旋桨空泡的形成机理，对其产生的噪声及其噪声谱作了分析；阐述了激光空泡噪声的原理，分析了激光产生噪声的机制。
This article elaborated the formation mechanism of propeller cavitation, the noise and the cavitation noise spectrum which produced by the bubbles were analyzed.
本文对如何应用回归分析方法以处理导管螺旋桨系列的空泡简试验数据进行了探讨。
In this paper, an attempt is made to apply the regression analysis method in handling the experimental data of ducted propeller series in cavitation tests.
本实用新型就是提供一种可有效延迟空泡的分离，并可延长螺旋桨桨叶使用寿命的截面拱度比非线性分布式船用螺旋桨。
The utility model provides a cross section camber ratio nonlinear distributed Marine propeller which can effectively delay the separation of the cavity bubble, and prolong the service life thereof.
该文阐述了螺旋桨空泡的形成机理，对其产生的噪声及其噪声谱作了分析；
This article elaborated the formation mechanism of propeller cavitation. , the noise and the cavitation noise spectrum whichproduced by the bubbles were Analyzed.
该文阐述了螺旋桨空泡的形成机理，对其产生的噪声及其噪声谱作了分析；阐述了激光空泡噪声的原理，分析了激光产生噪声的转换效率。
This article elaborated the formation mechanism of propeller cavitation, the noise and the cavitation noise spectrum which produced by the bubbles were analyzed.
该文阐述了螺旋桨空泡的形成机理，对其产生的噪声及其噪声谱作了分析；阐述了激光空泡噪声的原理，分析了激光产生噪声的转换效率。
This article elaborated the formation mechanism of propeller cavitation, the noise and the cavitation noise spectrum which produced by the bubbles were analyzed.
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