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We can produce any different pitch blade according to customer needs, the classic value of the pitch: A, 10 degree, suitable brush motor FP helichoper, let lower speeds rotor greater lift; B, 8 degree, suitable brushless motor FP helichoper, can make the main rotor get a higher speed; C, 6.5 degrees, suitable some DIY FP helichoper, can make the helicopter have better lock tail performance with a small diameter and high-speed tail rotor.

桨距可以根据客户需要进行定制，经典的桨距值为：A、10度，适合有刷马达的FP电直，能够在较低的转速下取得更大的升力；B、8度，适合无刷马达的FP电直，能够使主桨获得更高的转速；C、6.5度，适合玩家DIY的FP电直，配合小直径高转速的尾桨，能够获得更好的锁尾表现。

In order to coordinate with the model experiment of rotor, three rotor temperature measurement systems are developed in the paper. System No.1 transfers temperature signal through slip rings. Multi-channel switch circuit is installed on the rotor and changes multi-channel input into one-channel output, thus multi–channel temperature signal can be transferred through less slip rings than the common solution.

为了配合转子模型的实验工作，本论文研发了三套转子测温系统：第一套是通过滑环传递温度信号的测温系统，转子上安装多点信号切换装置，将多路信号输入变为选通的一路信号输出，可以利用较少的滑环传递多路信号。

The dynamic performance equations for flexible rotor-bearing system are eshablished, the dynamic analysis for the rotor bearing system is carried out, the influence of mechanical seals to forced and self-exciting movement of rotor-bearing system is presented.

建立了柔性转子轴承系统的运动方程，对水轮机转子－轴承系统进行了动力学分析，确定了机械密封对转子－轴承系统动力学性能的影响。

Screw compressor rotor machining tool wear the geometric calculation method : screw compressor rotor milling and processing a grinding two methods, usually conducted in two phases processing; first stage is rough, when the workpiece to be processed about its size to the second stage of Finished, when the rotor be processed into its final size when completed.

螺杆压缩机转子加工有磨削和铣削两种方法，通常分两个阶段进行加工；第一阶段为粗加工，当工件被加工到它的大概尺寸即可；第二阶段为精加工，当转子被加工成它的最终尺寸时完成。

This method is based on the blade second-order lifting-line model, the full-span free wake model, panel model for the fuselage and rotor trim model. By iterating induced velocities on the fuselage surface caused by rotor/wake and those on the rotor plane/wake caused by fuselage, a comprehensive analytical model is established.

该方法建立在桨叶的二阶升力线模型、旋翼的全展自由尾迹模型、机身的源面元模型、旋翼的配平模型的基础上，通过迭代旋翼/尾迹在机身上的诱导速度和机身在桨盘平面、尾迹定位点的诱导速度，形成一个全耦合的综合分析模型。

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact fault, the stability of the periodic motion of the system in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane were studied by the continuation-shooting algorithm. The system periodic motion and its stability were obtained. An experimental setup was developed to investigate nonlinear vibration characteristics of such rotor bearing system.

根据碰摩转子轴承系统的非线性动力学模型，利用延拓打靶算法，在碰摩转子轴承系统不平衡量-转速和碰摩间隙-转速参数域内，研究系统的周期运动及其分岔失稳等动力学行为，得到了系统周期运动的稳定性及失稳规律；建立了研究转子轴承系统碰摩故障的实验装置，通过实验，研究了转子系统碰摩故障的非线性振动的特征。

Finally, the adaptive control strategy of active balancing for a strictly positive and real rotor with actuator saturation is successfully extended to a flexible rotor with single collocated plane and actuator saturation and a flexible rotor with multiple collocated planes and actuator saturation. A series of numerical simulations show that the proposed adaptive control law can evidently reduce the original imbalance-induced vibration of these rotors and the actuator movement asymptotically approaches to its target value, the opposite of the original imbalance.

最后，把提出的自适应控制策略成功地推广到带作动器饱和、单并置平面的柔性转子和带作动器饱和、多并置平面的柔性转子，一系列数值模拟显示：该控制律能显著减小这些转子原始不平衡引起的振动，作动器的移动能渐近收敛到与原始不平衡相反的目标值。

The rotor system of the S-56 consisted of a single five-blade seventy-two foot diameter main rotor and a four-blade, fifteen foot diameter anti-torque tail rotor.

转子系统的 S - 56构成一个单一的5叶片72英尺，直径主旋翼和一个四叶片，直径15英尺的反扭矩尾桨。

Helicopter Design Institute of China Aviation Industry deputy chief designer, AC313 helicopter designer Xu Chaoliang description, AC313 helicopter innovation embodied in the eight key technology breakthroughs: 30 minutes drive to meet the "dry run" security requirements ; fuel system and body structure to meet the anti-crash and lightning safety requirements; driver and passenger seat crashed through the anti-dynamic security testing; body structure, control systems and meet the bird impact rotor system security requirements; airborne equipment to meet the lightning and high strength radiation protection design requirements; cockpit layout to meet the crew emergency evacuation safety requirements; rotor and composite material structure to meet the fatigue assessment based on damage tolerance requirements; mechanical systems to meet the design requirements of high energy rotor burst protection.

中航工业直升机设计研究所副总设计师、AC313直升机总设计师徐朝梁介绍，AC313型直升机的自主创新具体体现在八项关键技术的突破上：传动系统满足30分钟的&干运转&安全性要求；燃油系统和机体结构满足抗坠毁及雷击安全性要求；驾驶员和乘员座椅通过抗坠毁动态安全测试；机体结构、操纵系统及旋翼系统满足鸟撞安全性要求；机载设备满足雷击和高强辐射场防护设计要求；座舱布局满足乘员应急撤离安全性要求；旋翼和复合材料结构满足基于损伤容限疲劳评定要求；机械系统满足高能转子破裂防护设计要求。

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。