Ship propeller noise can be predicted by non-dimensional analysis of ship model propeller noise.
通过无量纲分析船模螺旋桨噪声可以预报实船的螺旋桨噪声。
The results of calculating the model propeller given by 18th ITTC show good agreement with the experiment data published.
通过对18届ITTC提供的模型桨的空泡预估表明，预估与实验观测结果基本吻合。
Abstract: : the propeller is in the model airplane one of most important components, is the model ship airplane obtains the power the key component.
摘要：螺旋桨是航空模型中最重要的零件之一，是航模飞机获得动力的关键部件。
The propeller is in the model airplane one of most important components, is the model ship airplane obtains the power the key component.
螺旋桨是航空模型中最重要的零件之一，是航模飞机获得动力的关键部件。
The model is applicable to the reliability analysis and design of infinite life for propeller blades or other structural members with initial defects and accident damage.
该模型可用于含初始缺陷或意外损伤的螺旋桨叶无限寿命可靠性分析和设计，得到桨叶可靠度与初始裂纹尺寸之间的函数关系式。
A model pro-peller rotor system and a real propeller rotor system have been analyzed using the algorithm.
利用本算法对一模型螺桨转子和一实际螺桨转子进行了分析计算。
A modified trailing vortex wake model of propeller is introduced to describe the distortion and separation of the trailing vortex sheet.
采用了一个修正的螺旋桨尾涡模型，来模拟导管螺旋桨尾涡片的扭曲变形及分离现象。
The research in this thesis is focused on the low harmonic variable-frequency power for the system meeting the needs of wind tunnel propeller model testing requirements.
旨在研究满足螺旋桨飞机模型风洞试验要求的为高功率密度电驱动系统供电的低谐波变频电源。
The present paper deals with theoretical model of random sequence of exponential attenuate acoustic pulses caused by ship propeller cavitation noise.
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 ideal propeller model is used in this article to simplify the flow around the propeller.
本文采用理想螺旋桨模型来简化螺旋桨绕流问题。
Minitype power unit with diesel and propeller is widely used in aviation model, unmanned scout and target drone.
航模、无人驾驶侦察机和靶机等飞行器经常采用带螺旋桨的活塞式小型动力装置。
A simplified model of propeller with infinite number of blades is employed to account for the effect of free wave in this paper.
为了便于计算，对兴波部分简化了计算模型，螺旋桨用无限叶数螺旋桨模型来代替。
A new propeller model open - water test was carried out in the decompressible towing tank .
本文介绍了在减压拖曳水池中最新开发的桨模敞水试验技术。
This paper gives the measurement results of the background noise in SSSRI cavitation Tunnel and the cavitation noise of the ITTC standard propeller model.
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。
On the basis of above theoretical model, the spectrum formula of propeller cavitation noise has been derived.
据此理论模型，导得螺旋桨空泡噪声谱的表达式。
This paper describes primarily the results of the research on the combination of stern shape, wake field and propeller rotation direction for a shallow draft full ship model.
本文主要介绍双桨浅吃水肥大船尾型、伴流场与螺旋桨旋向配合研究的主要结果。
It is verified by means of model test that the ship vibration is caused by the propeller-excited force, which is generated by the propeller running in the non-uniform stern flow field.
并通过模型试验进一步证实该船振动的成因主要是由于螺旋桨在不均匀流场中运转时产生的激振力所致。
The optical force and torque of a micro-propeller-shaped rotor driven by TEM00Gaussian laser beam are calculated with a geometric-optics model.
在几何光学模型近似下，对用TEM 00高斯激光束驱动微型螺旋桨结构的光驱动力和力矩进行了理论计算。
The optimum distribution of circulation on a marine propeller blade is numerically determined by using the lift_line vortex model and variational calculus.
利用螺旋的升力线模型和变分法原理对螺旋桨叶片环量分布进行了数值优化。
The N-S equations with adoption of an actuator disk model are used to simulate the effect of turbo-propeller slipstream on high-lift systems.
螺旋桨模型简化为一个激励盘，即一个无厚度可穿透的圆盘，以给定的圆盘拉力载荷，即压强差来模拟螺旋桨滑流的效果。
The boss vortex cavitation of propeller can be avoided by PBCF, and an increase of 2% in propulsion efficiency has been measured in the model tests.
桨毂帽鳍可改善毂涡空泡，模型试验状态下可提高推进效率2%左右。
Finally the application of the new modeling method to model test of cavitation and noise of propeller working behind is discussed.
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。
The mechanical type propeller dynamometer is unable to satisfy the requirements of the automatic measurement for the ship model tests.
机械式螺旋桨动力仪已不能满足船模试验自动化测量要求。
The utility model relates to a safety protecting device for the automatic braking of automobiles, comprising a safety plate, a protective net, an automatic air valve, and a propeller.
一种汽车自动刹车安全保护装置，有安全板、保护网、自动气阀、推进器组成。
The utility model discloses an air filter, which relates to the absorption technology of charcoal (9), a rotation shaft (4) is connected with a propeller (2) through a gas pipe (13);
一种空气过滤机，它涉及炭（9）的吸附技术，转动轴（4）穿过输气管（13）与螺旋桨（2）相连。
The R. P. D. is presented in this paper. Except the usual ship model test, it is possible to carry out measurement of tests for the underwater model and multi-propeller shaft model.
本文提出的变磁阻式螺旋桨动力仪除用于水面船模试验外，并可用于水下模型及多桨轴模型试验。
The utility model relates to a propeller which comprises a propeller hub and blades and is characterized in that the ends of the blades are connected with axial flow guiding sheets.
本实用新型是一种螺旋桨，它包括桨毂及桨叶，其特征在于桨叶末端联接有轴向导流片。
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.
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 can be applied to propeller fans of various models.
本实用新型可以广泛应用于各种型号的轴流通风机。
This paper presents an application of model reference fuzzy adaptive PID control to the submarine propeller hydraulic servo system.
基于模型参考自适应模糊控制和李亚普诺夫第二方法，提出了一种自适应模糊控制器设计的新方案。
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