Then there's increasing the number of rotor blades. This helps because each additional blade carries less of the weight of the helicopter, and thus produces less noise.
增加旋翼桨叶数量也是一种方法，这使得每片桨叶负载的直升机重量降低了，因此产生的噪音更小。
Rotor blade connection according to claim 1 wherein each intermediate layer of the individual dampers is fixed to the support beam structure by a single fastening point.
转子叶片方面，根据权利要求1，其中每一个中间层的个别阻尼器是固定的支持梁结构，由一个单一的紧固点。
Rotor blade connection according to claim 1 wherein individual elastomer dampers are arranged to provide a damping effect in a lead-lag bending direction of the support beam.
转子叶片方面，根据权利要求1，其中个别弹性阻尼器的安排，以提供一个阻尼效应在带头滞后弯曲方向的支持束。
Rotor blade connection according to claim 1 wherein the support beam and the intermediate layers comprise a fiber reinforced material.
转子叶片方面，根据权利要求1其中，支撑梁和中间层组成，纤维增强材料。
Connection apparatus for a helicopter rotor blade, comprising.
连接装置的直升机转子叶片，其中包括。
Rotor blade connection according to claim 4 wherein the intermediate layers are covered with electrically controlled piezo elements.
转子叶片连接据索赔4其中，中间层是涵盖与电控压电元素。
The airfoil member according to claim 1, configured as a rotor blade for a helicopter.
翼型会员根据权利要求1 ，配置为转子叶片为直升机。
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。
Rotor design is comprised of some factors such as hub configuration, blade number, rotor diameter, rotor solidity and airfoil which have effects on helicopter performances.
旋翼设计包括桨毂构型、旋翼桨叶片数、旋翼直径、旋翼实度、翼型剖面等一系列影响直升机性能的因素。
Thermal analysis on the first stage turbine rotor blade has been completed based on the CFD results under calculated conditions.
根据某型涡喷发动机计算状态叶片流场计算结果，对该发动机高压涡轮转子叶片进行了热分析；
The helicopter rotor blade deicing technique is greatly important to ensure the flight safe - ty.
直升机旋翼桨叶除冰技术对保证直升机飞行安全是十分重要的。
As to the selection of rotor blade number for light and medium helicopter, 4 blade and 5 blade rotor are typical.
而旋翼桨叶片数的选择，对轻型和中型直升机来讲，4片桨叶旋翼和5片桨叶旋翼具有典型意义。
Experimental results show that under the effect of the rotor wake, the dominant frequencies of pressure fluctuations on stator blades are the rotor blade passing frequency (BPF) and its harmonics.
实验结果表明：在转子尾迹的影响下，静子叶片表面的波动频率是转子的尾迹频率及其倍频。
In addition, the wake interaction of upstream blade row and the expansion wave at rotor exit also cause an unsteady force acting on the downstream rotor blade surface.
此外上游静子尾迹以及动叶尾缘出口膨胀波等也是产生转子叶片表面非定常力的因素。
Gravity center modification method can be used in high-load rotor blade design in engineering.
重心线调节法可应用于高负荷叶片设计。
The numerical method of determining the water droplet impingement property of rotor blade in hover was studied.
介绍了直升机在悬停状态下，求解旋翼水滴撞击特性的数值方法。
A rotor blade, specially for a helicopter rotor, which blade is made of reinforced plastics and a process for making this blade in a single molding operation.
一转子叶片，特别是为直升机旋翼，叶片制成的增强塑料和一个过程，使这种刀片在一个单一成型的运作。
According to the specialized demands of the rotor blade design, the paper studies emphatically how to creat the feature library which is used to design the root and the platform of blade.
根据转子叶片设计的特殊要求，本文着重研究了转子叶片榫头、安装板的特征库。
As a critical part of helicopter, rotor blade anti-fatigue design technique is one of the key to improving safety life and decreasing cost.
作为直升机的关键动部件，桨叶的抗疲劳设计技术是提高桨叶安全寿命，降低桨叶使用成本的关键。
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。
A new way to solve dynamical response of rotor blade in helicopter.
提出了一种全新的计算旋翼桨叶动力响应的方法。
The design of structure and dynamics of a rotor blade is based on its section characteristic of composite blade.
复合材料桨叶剖面特性是旋翼桨叶设计的最基本原始参数，也是桨叶结构设计、动力学设计和结构分析的基础。
The wing withstands vertical bending, chordwise bending and torsional deformations, and the rotor blade is considered to be capable of rigidly withstanding one order flap and lag motions.
机翼承受垂向弯曲、弦向弯曲和扭转变形，螺旋桨旋翼的桨叶认为是刚性的并承受一阶挥舞和摆振。
This model accounts for the uncertainty about the loads acting on the wind-turbine rotor blade by the unstable wind distribution. A 20-year design lifetime is considered.
该种模型考虑了由于风速的不稳定所带来的作用在风力机叶片上分布载荷的不确定因素，并假定风力机的设计寿命为20年。
The aeroelastic analysis of a helicopter rotor blade with the controlled oscillating trailing edge flap is presented by building an aeroelastic model of the new concept rotor blade.
通过建立带受控振荡附翼的新概念旋翼气动弹性分析模型，研究了采用受控振荡附翼的直升机旋翼气动弹性特性及其在降低旋翼振动载荷方面的有效性。
The cause of water erosion in the end rotor blade of 100 MW steam turbine is analyzed with solution proposal.
对神木发电有限公司100MW汽轮机末级动叶片水蚀原因进行了分析，并提出了解决方案。
The cause of water erosion in the end rotor blade of 100 MW steam turbine is analyzed with solution proposal.
对神木发电有限公司100MW汽轮机末级动叶片水蚀原因进行了分析，并提出了解决方案。
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