The three-blade main rotor is mounted above centre of fuselage.
在机身中心上面安装一个三浆叶主螺旋桨。
The helicopter has a five-blade main rotor and a four-blade tail rotor.
直升飞机有一个五浆叶主旋翼和一个四浆叶尾旋翼。
Additionally walking into the tail rotor or main rotor is a safety concern for bystanders.
此外走进尾桨或主旋翼是一个安全关切的旁观者。
Vertically mounted engine driving main rotor via toothed belt as second-stage reduction gear.
垂直安装的引擎，该引擎作为第二阶段的减速齿轮齿形带主旋翼。
A composite main rotor yoke is used in an example problem to demonstrate the reliability analysis.
以直升机主旋翼桨毂星形件为例，给出分析计算结果。
The reports also state that it is fitted with a new type of engine and composite main rotor blades.
报告还称，它配备了新型引擎和复合主旋翼叶片。
It is a good practice to check the bolts and nuts on the main rotor head and tail rotor after every flight.
每次飞完检查主旋翼头和尾旋翼头的螺丝螺母是一个很好的习惯。
The forming, the distribution and the influence of the downwash flow on helicopter main rotor are discussed.
探讨了直升机旋翼下洗流的形成、分布和影响。
Adding a rotor blade (it had five on the main rotor and four on the tail) and using a modified exhaust system were among them.
增加一个桨叶(主桨有5个叶片，尾桨有4个)，并使用了改进的排气系统。
Main rotor is put through precision balancing tests to ensure smooth operation, minimal vibration, lower noise and more reliable performance;
◎主转子经过高精度的动平衡检测，确保运转平稳、振动微小、噪音更低、性能更可靠；
This means it can hover like a helicopter, but when flying forward can reduce the speed of the main rotor because the wings provide part of the lift.
这意味着它能像一架直升机那样作空中悬停，而在向前飞行时，又能降低主旋翼的速度，因为它的一对短翼提供了部分升力。
This means it can hover like a helicopter, but when flying forwards can reduce the speed of the main rotor and let the wings provide part of the lift.
这意味着它能像直升机一样悬停，但向前飞时可能减少主旋翼的速度并让这两个短翼提供部分提升力。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
Working on the main rotor bearing housing is a natural progression for Romax Technology, a company that has many years experience in gearbox design.
Romax科技有限公司是一家有多年齿轮箱设计经验的公司，进行与主轴轴承分析校验和主轴轴 承座有关的工作是其技术领域的一个自然拓展。
It is powered by two jet-turbine engines which operate both the five-bladed main rotor and, through a gearbox and shafts, a pair of propellers on two short wings.
它由两个喷气涡轮引擎提供动力，以驱动五个叶片的主旋翼，以及通过齿轮箱和连轴驱动在两边短翼上的一对螺旋桨。
And it is proposed that much improvement of the range profiles can be achieved by using the vibration compensation of the main rotor of the helicopter in forward flight.
提出对前向飞行的水平旋翼的振动进行补偿，可以大幅度提高合成距离像的质量。
For the current helicopter of single main rotor with tail rotor, the effect of inflow models with different characteristics on helicopter trim and digital simulation was discussed.
以常规单旋翼带尾桨直升机为对象，讨论均匀与非均匀入流模型对直升机飞行数值仿真的影响。
This means it can hover like a helicopter, but when flying forwards can reduce the speed of the main rotor and let the wings provide part of the lift. Its propellers give the extra oomph.
立方直升机的这种配置让他可以像直升机一样盘旋，但在向前飞行时，主旋翼的转速可以将下来，让两侧的机翼提供升力，在此情况下，两台螺旋桨推进器就能发挥大作用了。
Main rotor is the key part of helicopter modeling, the associated modeling methods of aerofoil aerodynamic loads, rotor inflow dynamics and blade flap motion are discussed in detail.
主旋翼是直升机建模的关键，详细讨论了与其相关的翼型气动力模型、 诱导速度模型和挥舞运动模型的建模方法。
And centrifugal pump (pump milk) Comparison: centrifugal pump because of its simple structure, low cost and widely used. Compared with the main rotor pumps have the following differences.
与离心式泵(奶泵)的比较：离心式泵由于其结构简单，造价低而得到了广泛的应用。它与转子泵比较主要有以下几点区别。
For the classical helicopter of single main rotor with tail rotor, the effect of inflow models with different characteristics on helicopter trim and digital simulation were discussed in this paper.
针对常规单旋翼带尾桨直升机，讨论不同特性的入流模型在直升机数值仿真中的作用。
The rotor is connected to the main shaft, which spins a generator to create electricity.
这个转轴是连接到可以转动发电装置发电的主转轴上的。
The electric measuring system: the main function is to process electrical signals by the sensor, shows the unbalance of rotor position and size.
电测系统：主要功能是处理由传感器来的电信号，显示出转子不平衡量所处的位置和大小。
The main products are: rotor blades, the stator, leaves and other parts.
主要产品有：叶片泵转子、定子、叶片及其它零件。
Rotor unbalancing is one of the main causes of vibration and noise in aero-engine, especially in micro-turbojet engine, which affects work performance and fatigue life directly.
航空发动机尤其是高速旋转的微型涡喷发动机，不平衡是造成转子振动过大以及产生噪音的主要原因之一，直接影响发动机的工作性能和使用寿命。
Main points and design characteristics of main design parameter, pneumatic, strength and rotor dynamics calculations of centrifugal compressor natural gas pipe line are introduced.
介绍了天然气管线压缩机的主要设计参数、气动方案计算、强度计算、转子动力学计算的要点及机构设计的特点。
Main faults of the rotor machine result from rotor unbalance. To decrease vibration of the machine, the rotor should be balanced.
转子失衡是旋转机械发生故障的主要原因，为降低振动必须对转子进行动平衡。
Main faults of the rotor machine result from rotor unbalance. To decrease vibration of the machine, the rotor should be balanced.
转子失衡是旋转机械发生故障的主要原因，为降低振动必须对转子进行动平衡。
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