Research shows that, it is suitable for rotor dynamics, dynamic analysis of helicopter rotor blades fuselage systems and piping systems contained flow fluid.
研究表明，本方法适用于转子动力学，直升机旋翼-机身耦合系统以及具有流体流动的管道系统的动力分析。
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。
But unlike an aircraft, when a helicopter is flying forwards the air passing over its rotor blades does so at different speeds.
但是与飞机不同的地方在于，当直升机向前飞行时，空气是以不同的速度流过旋转的叶片的。
When the helicopter began getting away from the pilot he pulled back on the cyclic which controls the pitch of the rotor blades only to find the aircraft unresponsive.
当直升机开始与飞行员脱离的时候，他向后扳用来控制转翼叶片变矩的操纵杆，但直升机毫无反应。
By the end of 1979, We had produced the full scale forming die of the composite rotor blades of Y-2 type helicopter. The results of the NC machining show that this method is successful.
1979年末，我们加工了全尺寸y—2直升机复合材料桨叶成形凹模，从数控加工的结果看这种方法是成功的。
What limits the speed of a helicopter is the same thing that allows it to hover-the air flowing over its spinning rotor blades.
究竟是什么限制了直升机的飞行速度同时却能够让它盘旋呢？答案是流动通过直升机上方旋转叶片的空气。
Dynamic characteristics of composite rotor blades of Y-2 type helicopter are studied.
采用子空间迭代法求它的特征解。Y—2直升机的玻璃钢桨叶进行动力特性分析。
Dynamic characteristics of composite rotor blades of Y-2 type helicopter are studied.
采用子空间迭代法求它的特征解。Y—2直升机的玻璃钢桨叶进行动力特性分析。
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