blade damper meaning in English
桨叶减摆器
桨叶减震器
Examples
- Among others , one method to solve this problem is to install lead - lag dampers . the conventional configuration for installing dampers is to put them between blades and hub . in 1990s , eurocopter began to use the inter - blade dampers in ec155 which means to put every damper between two adjacent blades
传统的减摆器布置是桨叶-桨毂式;上个世纪90年代,欧直公司开始在ec155上使用叶间减摆器,减摆器不是布置在桨叶和桨毂之间,而是布置在相邻两片桨叶之间。 - The flight test of ec155 tells us that inter - blade dampers can work very well in stabilizing the system ; another advantage of this configuration is it can make the hub system simpler and reduce the drag of air to the hub which is very important for helicopters with 4 or more than 4 blades
Ec155的飞行试验证明,这种减摆器布置方式对提高稳定性效果明显;这种布置方式的另外一个优点是可以简化桨毂,降低其气动阻力,对多桨叶(四片和四片以上)直升机有重要意义。 - To this problem , on the basis of the work property and characteristics of the water turbine ' s blade . the finite element mechanics model of blade vibration characteristic is described with the eight - node three - dimensional nonconforming and all parts of blade damp are analysised , the calculating model of blade damp is built , the tackling method of blade damp in calculating of dynamic stress is presented
本文根据水轮机叶片的特点和工作性质，采用空间八结点非协调等参单元描述水轮机叶片运动特性的有限元力学模型，详细分析了水轮机叶片阻尼各组成部分，并建立了叶片阻尼的计算模型，提出了叶片阻尼在动应力计算中的处理方法。 - Damping was then determined via exciting the equation at the critical frequency to get the transit decay which was then analyzed with the moving - block method . in chapter 4 , the nonlinear dynamic equation of rotor - body system with inter - blade dampers ( taking all possible attachment offsets into consideration , spanwise offset , vertical offset and in - plane offset ) was modeled
本文重点推导了带叶间减摆器(减摆器带三个外伸量:展向,垂向和旋转方向)的旋翼/机体耦合系统的非线性动力学方程,针对该方程提出了一种改进的多桨叶坐标变换方法。 - The new model captures important behavior such as reduced damping in forward flight due to dual - frequency motion . it also captures the correct force - displacement ( time domain ) hysteresis behavior . the new inter - blade damper nonlinear kinematics model confirms experimentally observed results reported in the literature : certain damper attachment offsets can lead to reduced damper 1 / rev motion and forces
数值结果表明：本文的粘弹减摆器模型与以往的模型相比有很大的改进，可以准确地计算减摆器在时域内的力位移迟滞曲线，也可以很好的描述直升机前飞过程中减摆器出现的双频特性。