Propeller cavitation degrades propeller performance, erodes blade surfaces, produces noise, and causes vibration on the ship hull.
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。
A numerical method is presented for prediction of propeller performance and pressure distribution on blade surface according to lifting surface theory.
本文提供了一种根据升力面理论计算螺旋桨桨叶表面压力分布和螺旋桨性能的数值方法。
In order to search a new way for torque measurement and investigate propeller performance accurately, the special balance has been designed for propeller testing.
为了探索新的扭矩测量方法，准确研究螺旋桨的性能，设计了螺旋桨实验专用天平。
Even if has a good engine, if does not have the appropriate propeller to lead, the airplane performance also can sell at a discount greatly.
即使有一个好的发动机，如果没有合适的螺旋桨来带动，飞机的性能也会大打折扣。
Submarine Guide Vane Propeller is a new device developed by CSSRC to improve powering performance and reduce propeller-radiated noise of submarine.
潜艇前置导叶螺旋桨是CSSRC为提高潜艇快速性和降低螺旋桨噪声而开发的一种新装置。
An efficient lifting line method has been developed for computing the performance of propeller.
本文提供了一种能有效计算螺旋桨性能的方法。
This paper adopts the theoretical method to research the problem on the performance prediction and the design of the propeller operating in ship wake systematically.
本文采用理论方法系统地研究了非均匀流场中螺旋桨性能预报和理论设计问题。
Present method is reliable and effective by the calculation results. It is very successful in the calculation of the pressures and hydrodynamic performance of the propeller in unsteady condition.
实例计算结果表明本方法是可靠和有效的，在螺旋桨水动力性能预报和压力分布等方面的计算是非常成功的。
So, how studies can accurately prediction to the contra-rotating propeller hydrodynamic performance is more important.
所以，研究如何更能准确地预报对转螺旋桨水动力性能更为重要。
The propulsive performance and design of propeller for the special stern shapes are discussed in this paper.
文中亦对特殊船尾的推进性能与螺旋桨设计作了初步分析。
So, an in-depth study in how to make a accurate prediction of the hydrodynamic performance of the propeller is very important.
因此，深入地研究如何准确地预报螺旋桨的水动力性能是非常重要的。
The paper presents a new method for predicting the hydrodynamic performance of the shilling rudder behind a propeller.
本文提出了一种计算带制流板的鱼尾舵在螺旋桨尾流中水动力性能的方法。
To predict the noise of the warship propeller is significant for estimating the propeller's acoustical performance and designing low noise propeller.
螺旋桨噪声的预报对评价螺旋桨声学性能及螺旋桨声学设计有非常重要的意义。
In the propulsion performance of the icebreaker, mainly use the ducted propeller as the main propulsion.
在破冰船推进性能方面，主要采用导管螺旋桨作为主要推进器。
The surface panel method and an improved numerical Kutta condition have been applied to predict the hydrodynamic performance of a propeller in steady flow.
本文采用面元法和改进的数值库塔条件预报螺旋桨定常性能。
In the case of heavy load when the advance ratio of propeller is small, the contraction of wake has large effect on the performance of the propeller.
在小进距比的重载情况，螺旋桨尾涡的收缩对螺旋桨的性能影响较大。
The hydrodynamic performance of podded propeller is calculated, including the open water characteristics and bearing force.
用面元法对吊舱螺旋桨的水动力性能进行了计算，得到了吊舱推进器的敞水曲线和轴承力。
In order to predict the hydrodynamic performance of propeller with boss cap fins, CFD software was used to calculate the its open water performance.
为了预报毂帽鳍的水动力性能，采用计算流体力学软件对粘性流场中毂帽鳍的敞水性能进行计算研究。
The result shows that the traditional estimation methods about powerplant performance are adapted for propeller aircraft even if with small sized piston engine and propeller.
研究结果表明，传统的估算方法对于装小型活塞式发动机的螺旋桨飞机也是适用的。
While the requests of AUV design performance are met, the objectives of minimizing gross weight and maximizing propeller power and payload length are achieved.
在满足AUV的设计性能要求的同时，实现了使得AUV总重量和推进功率最小，有效载荷段的长度最大等目标函数。
A new equipment for simulated the performance of propeller load is introduced in this paper, it's an all digital DC torque servo system using torque closed loop and current closed loop control.
介绍一种新型的螺旋桨特性负载模拟装置，它是全数字控制的直流转矩伺服系统，采用转矩电流双闭环控制方式。
So there is much important significance to deeply understanding the characteristic of electric propulsion device by studying the performance of a propeller load.
因此研究螺旋桨负载特性对于深入认识电力推进装置的特点有很重要的意义。
This research is useful in predicting of the hydrodynamic performance and in enhancing the prediction precision of the propeller by using High-Order Surface Panel Method.
本论文的研究为高阶面元法预报螺旋桨的水动力性能打下了一定的基础，对进一步提高面元法预报的精度具有一定的实用意义。
A new method for predicting the hydrodynamic performance of the rudder with plates behind a propeller is presented.
提出了一种计算带制流板舵在螺旋桨尾流中水动力性能的方法。
If the plane is designed to fly slowly, use a long, low pitch propeller to see the best possible performance.
如果该飞机的设计飞行缓慢，长期使用，低螺距螺旋桨看到最好的性能。
This paper has adopted the lifting-surface method for the prediction of unsteady hydrodynamic performance and cavitation performance of propeller.
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。
In order to analyze the influence of fins, a low-order panel method based on velocity potential was used to predict the steady hydrodynamic performance of a podded propeller with fins.
为了分析鳍对吊舱推进器水动力性能的影响，用基于速度势的低阶面元法预报附鳍吊舱推进器的定常水动力性能。
Rotation speed control unit is an important part of underwater heat power propeller system, it directly effects performance of power propeller system.
转速控制单元是水下热动力推进系统的重要组成部分，其直接影响着动力推进系统的性能。
In depressurized condition, multi-scheme experiments of propeller hydrodynamics performance have also been accomplished under different number of cavity and ratio of submergence.
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.
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。
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