螺旋桨

导管螺旋桨非定常水动力性能数值预报

Fixed screw propeller shrouding Prediction of Unsteady Performances of Ducted Propeller

水下修理作业设计方案研究&水下更换螺旋桨、舵板等方案研究

Study on Project of Repair Task Below Water-Replacing Screw Propeller and Helm

直升机的螺旋桨开始转动时，尽量离远点儿。

Stay well away from the helicopter when its blades start to rotate .

绳索缠住了螺旋桨。

The rope fouled the propeller .

伴随着隆隆的低沉噪声，螺旋桨开始旋转起来。

With a low-pitched rumbling noise , the propeller began to rotate .

货船的螺旋桨被渔网缠住了。

The freighter fouled its propeller in fishing nets .

头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。

Overhead , the chopper roared and the big blades churned the air .

一根绳子卡住了船的螺旋桨。

A rope jammed the boat 's propeller

发动机使螺旋桨旋转起来。

The engine turned a propeller .

飞机的螺旋桨在快速旋转时，要离得远一些。

Stay away when the plane 's propellers are spinning .

此外，由于不用空气螺旋桨驱动，所以噪音也比较小。

Moreover , they are also quieter , as they are not driven by an airscrew .

但要实现所有这些概念花销巨大，需要陆上和空中的安全认证标准，需要双重控制，需要复杂的折叠机翼和螺旋桨，还得从飞机跑道起飞。

But all these concepts are massively expensive , require safety certification standards for road and air , need dual controls , involve complex folding wings and propellers , and have to be flown from air-strips .

B：为了保持飞行员凉爽。不信的话，只要停止螺旋桨转动看看飞行员会不会满头大汗。

B : " To keep the pilot cool . If you don 't think so , just stop it and watch him sweat ! "

A：飞机的螺旋桨有什么用？

A : " What 's the purpose of the propeller ? "

螺旋桨开始飞快地旋转起来。

The propeller started to spin around .

引擎往复推动螺旋桨

The engine reciprocates the propeller .

风门的调速与飞机螺旋桨的转动精确同步

The timing of the gun was precisely synchronized with the turning of the plane 's propeller .

MATLAB辅助船用螺旋桨设计

Aided design of marine propeller using MATLAB

运用多元多项式的回归分析方法给出了螺旋桨推力系数KT值的一种精度较高的数学表达式。

The mathematical expressions with high accuracy of propeller thrust coefficient are given by the regression analysis .

CNC中的PLC转动的螺旋桨

CNC Turning The PLC in CNC

这架四叶螺旋桨直升飞机是由装在iPhone里的软件控制的。

The four-propeller helicopter is controlled by software installed on the iPhone .

螺旋桨理论在LPG船侧斜桨设计中的应用

Application of Propeller Theory in Skewed Propeller Design for a LPG Ship

敞水回归曲线的回归系数用Access数据库储存，ADO数据库查询方式查询数据库，运用折半查找的思想设计出最佳螺旋桨。

The open water tests regression coefficients are stored in Access tables . ADO is used to query the Access database .

螺旋桨目标的ISAR回波信号建模与分析

Modeling and Analysis of ISAR Echo Signal of Propeller Target

基于螺旋桨特性四象限Chebyshev拟合式的深潜艇正倒航变速推进模型

Chebyshev Fit of Propeller Properties across Four Quadrants and Propulsion Model of DSV

文中除给出两组导管螺旋桨的敞水特性曲线外，还给出了通常沿用的（1/2）Bp～δ设计图谱和相应于最佳状态的简易图谱。

In addition to the open water characteristics of the above mentioned ducted propellers , the usual BP - δ charts and the charts corresponding to the optimum condition are also given .

导管螺旋桨内流场的LDV测量

LDV measurements of inner velocity field of ducted propeller

基于HHT变换的船舶螺旋桨空泡激励振动信号特征分析

Research on time-frequency characteristic of vibration signals excited by the propeller vortex cavitations based on HHT transform

VLCC大侧斜螺旋桨设计可行性研究

Feasibility Study of Highly-skewed Propeller for VLCC

本文采用面元法理论以及计算流体力学软件FLUENT对螺旋桨与舵附推力鳍组合体系统进行了理论计算。

In this paper , panel method and CFD software FLUENT have been used for the calculation of the interaction of propeller and rudder with additional thrust fin .