本文提供了一种能有效计算螺旋桨性能的方法。
An efficient lifting line method has been developed for computing the performance of propeller.
最后研究了攻角对单独螺旋桨性能参数的影响。
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.
比较结果表明，利用本文提供的方法可望提高大侧斜螺旋桨性能的计算精度。
It is confirmed that the accuracy of calculation results can be improved, especially for highly skewed propeller, by the present method.
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。
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。
A numerical method is presented for prediction of propeller performance and pressure distribution on blade surface according to lifting surface theory.
除了扮演传统直升机角色外，还具有涡轮螺旋桨飞机的长距离、高速巡航性能。
It is designed to perform conventional helicopter missions but with the long-range, high-speed cruise performance of a turboprop aircraft.
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。
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.
快速性良好的船舶应使得船、主机和螺旋桨之间的性能综合匹配。
To a ship with good speediness, the performances of ship, main engine, and propeller must match each other.
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。
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.
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。
So, how studies can accurately prediction to the contra-rotating propeller hydrodynamic performance is more important.
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。
The propulsive performance and design of propeller for the special stern shapes are discussed in this paper.
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。
So, an in-depth study in how to make a accurate prediction of the hydrodynamic performance of the propeller is very important.
本文就PBCF对螺旋桨诸性能的影响效果及其使用，进行了较系统地论述与分析。
This paper is concerned with the influence of PBCF on various performances of the propeller.
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。
A new method for predicting the hydrodynamic performance of the rudder with plates behind a propeller is presented.
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。
If the plane is designed to fly slowly, use a long, low pitch propeller to see the best possible performance.
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。
In the propulsion performance of the icebreaker, mainly use the ducted propeller as the main propulsion.
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。
The surface panel method and an improved numerical Kutta condition have been applied to predict the hydrodynamic performance of a propeller in steady flow.
本文应用准定常升力线理论预报船用螺旋桨的性能，建立了适合中型计算机的程序。
In this paper, a method based on quasi-steady lifting line theory for the prediction of performance characteristics of a propeller working in a non-uniform wake field is presented.
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。
The paper presents a new method for predicting the hydrodynamic performance of the shilling rudder behind a propeller.
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。
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.
BP人工神经网络模型通过训练可以具备强大的非线性映射能力，以数学解析的形式，较好地提取了海量螺旋桨水动力性能数据特征；
Through trained, BP neural network can obtain strong nonlinear mapping ability to learn the data characteristics of the hydrodynamic performance of ship propeller as a mathematic analytic form.
采用隧道尾而增大螺旋桨直径，是提高排水型快艇快速性能的一条重要途径。
It is an important way for improving the rapidity of a displacement craft to adopt tunnel stern and increase propeller diameter.
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.
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。
To predict the noise of the warship propeller is significant for estimating the propeller's acoustical performance and designing low noise propeller.
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。
In order to search a new way for torque measurement and investigate propeller performance accurately, the special balance has been designed for propeller testing.
采用升力面涡格法对系列大毂径MAU型螺旋桨进行敞水性能计算，运用理论算法扩充了MAU型螺旋桨图谱。
The open water characteristics of a series of large hub-diameter Ratio MAU propellers are calculated by using lift-surface method to expand the chart of MAU-series propeller.
获得了螺旋桨推力系数、扭矩系数等水动力性能参数。
The hydrodynamics parameters such as the thrust coefficient and torque coefficient were obtained.
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。
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。
The hydrodynamic performance of podded propeller is calculated, including the open water characteristics and bearing force.
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