螺旋桨

By superimposing the rotary movement of the propeller on a straightline perpendicular to the rotational axis (to represent the movement ofthe vessel), the blade of the Voith-Schneider Propeller follows acycloid.

由叠加扶轮运动的螺旋桨就一条直线，垂直旋转轴，叶片的沃依特-施奈德螺旋桨如下一摆线针轮。

A turbojet engine used to drive an external propeller.

涡轮螺旋桨发动机一种用于推动外部螺旋桨的涡轮喷气式发动机

And the above mentioned coefficients can be calculated directly by computer according to the ducted propeller principal particulars.

然后，为了满足全回转式拖轮多工况动态仿真的需要，本文对配备于全回转式拖轮上的导管螺旋桨进行了研究，给出适用于计算机仿真的导管螺旋桨的推力和转矩计算方法。

The surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.

采用面元法预报大侧斜螺旋桨水动力性能，螺旋桨表面及尾涡面离散为四边形双曲面元，每个面元上布置等强度源汇和偶极子分布。

This thesis tried to connect the dynamic factor of the propeller hydro-oscillation force and the lubricative state of it to analyze and calculate the lubricative characteristics of it with many variables, and them to explore a feasible way for the lubricative characteristics calculation of it, reckoning the propeller hydro-oscillation force in and put up a flat roof for reckoning all dynamic factor in future.

本论文力图将螺旋桨流体激振力这项动态因素和船舶尾管轴承的润滑状态结合起来，进行多项变量的润滑特性的分析和计算，为计入螺旋桨流体激振力的船尾轴承润滑特性计算探索出了一条可行的方法，并为将来全面计入各种动态因素建立平台。

The USAF system has four tiers, and the lowest-altitude layer is the suggestively named tier N/A, which was carved out of tier 1 in prospective recognition of the unique qualities of mini-UAVs.

像大多数小飞机一样，黄蜂无人机通过固定的翅膀获得上升力，并通过螺旋桨获得推动力，螺旋桨的动力来自一个10w的电动马达。

The slipstream boundary conditions are imposed at the surface swept by prop to avoid the mass calculation of simulating the prop circumrotating with high velocity. The aerodynamics of aircraft can be simulated numerically by solving Euler equations exactly and efficiently.

为了解决精确模拟螺旋桨高速旋转带来的计算量大的问题，本文在螺旋桨旋转平面建立滑流边界条件，利用Euler方程可以准确高效的对全机气动力进行数值模拟。

The submarine submerged propeller depth and the speed conciliation properly, the back of propeller generated air bubbles would be very small, in the role under pressure soon collapse, the danger decreases.

潜艇的潜航深度和螺旋桨的转速如调解得当，则螺旋桨背面生成的空化气泡便非常小，在水压的作用下很快溃灭，危害度减小。

Through performing all kinds of anti-corrosion and anti- abrasion experiments,the ways of surface oxidation process and anti-corrosion coat materials of air propeller are selected in this article according to self-protection property of the air propeller used on certain ship.

根据空气螺旋桨在某船上的自身防护特点，通过耐腐蚀、耐磨蚀等各种实验，对空气螺旋桨桨叶表面氧化处理工艺和表面防腐涂层材料进行了筛选。

Each of the first three machines ( V1 , V2 , and V3 ) was provided with only a small rear propeller to blow air at the tail surfaces for steering, but the last machine (V4) had a second propeller mounted co-axially to provide thrust for forward flight when clutched to the compressor motor.

每头三机V1的， V2的，和V3的）提供了唯一的一个小后方转向空气螺旋桨尾吹在物体表面，但最后机（V4区）进行了第二螺旋桨式的合作来提供推力轴为向前飞行时抓住的压缩机电机。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。