The early rub impact fault detection of an engine rotor system in noise circumstances is researched.

研究了在有噪环境下发动机转子系统早期碰摩故障的检测问题。

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The relative correlation distance entropy is applied to fault diagnosis and state recognition of aero engine rotor-case system.

将相对关联距离熵应用于航空发动机转子—机匣系统状态识别和故障诊断。

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Thus, in the primary project of the engine rotor system, it is very useful to predict the dynamic parameters which the flexible supports must have.

因此，在发动机轴系初步设计时，预先估计弹性支承应具有的动力特性参数是很有意义的。

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One way to increase the efficiency of a high-bypass jet engine is to turn the fan into an open rotor, a bit like returning to propellers, but using two rings of stubby counter-rotating blades.

ECONOMIST: A new way to build a greener jet engine

Its Radmax engine uses two wave-shaped cams that rotate above and below a stationary rotor.

FORBES: How to get 51mpg from an engine the size of a large turkey.

It was three o'clock in the morning when Graham fired up the engine, and as the frost glistened on the young fruit, the giant rotor began to turn.

BBC: Graham Hewitt and his wind machine