Alo on display will be electronic engine control, currently in production to upgrade CH-47 and UH-60 helicopter engine for the U.S. Army and National Guard.

同时展出的还将有发动机控制电子装置，目前正在生产并用于升级美国陆军和国民警卫队的 CH-47 和 UH-60 直升机发动机。

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Finally, the effect of the helicopter engine inlet and outlet was analyzed using a simplified engine model and the rotor-fuselage-engine interactions were obtained.

最后运用简单的发动机模型分析了发动机进出口对直升机流场的影响。

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The 30′s were not less invention-intensive bringing us the jet engine, helicopter, tea bags, sticky tape, ballpoint pen and the first photocopier.

30年代人们也有不少发明，如喷气发动机、直升机、泡茶袋、胶带、圆珠笔和第一台复印机。

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Management decided to take a measured approach, selling off smaller defense units such as the Norden electronics business (bought by Westinghouse in 1994) while retaining the engine and helicopter businesses.

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The witness said he did not hear any irregular engine noise when the helicopter went past and the height and speed of the craft were normal.

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Mr Cook said he saw news of the helicopter crash later that day, which contained suggestions of engine problems and erratic flying.

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