counter-rotating

Unsteady loading noise of counter-rotating propeller

反旋桨扇非定常负荷噪声的研究

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Study on Hub Structural Optimization Design of Counter-rotating Axial Flow Fan

对旋式轴流风机的轮毂结构优化设计研究

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The unsteady Loading noise generated by interaction of a front rotor wake with an aft rotor in a counter-rotating ( CR) propeller is analyzed and the noise radiation formulae are derived.

本文着重研究了反旋桨扇前排转子尾流与后排转子干涉形成的非定常负荷噪声，并与试验结果作了对比。

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Counter-rotating turbine is one of the key technologies of gas turbine engine and it has great potential in elevating thrust-to-weight ratio of aero-engine and improving performance of aircraft.

对转涡轮技术是燃气涡轮发动机的一项关键技术，它在提高发动机推重比以及飞机性能方面具有较大的发展潜力。

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In the meantime, unknown to NASA, GE was developing its own design: a gearless , counter-rotating pusher system.

而在同一时期，GE也在进行着自己的开发设计（不知为何，NASA对此并不知情）：一个无减速器的反向旋转的推进系统。

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The two counter-rotating tandem propellers provide a simple means to enhance yaw control, which is particularly important in vertical flight.

而机上安装的一对反向旋转的螺旋桨则起到了至关重要的作用。

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Study of longitudinal Wakefield and longitudinal instability for the two counter-rotating beams

双束流激发的纵向尾场与纵向不稳定性的研究

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State-of-the-art of new counter-rotating propeller development in the world

国外新型对转螺旋桨系统研制现状

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Equipped with reversible mechani sm to avoid the reel counter-rotating to leade the springs broken.

设置了可逆转机构,避免卷筒逆转而折断弹簧.

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In the recent few years, counter-rotating turbine has been more and more regarded because it can offer some significant benefits compared with conventional two stage turbine, such as the elevated thrust-to-weight ratio of aero-engine, the improved performance of aircraft, and so on.

近年来，对转涡轮技术作为可提高航空发动机推重比及飞机性能的有效技术越来越受到重视。

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And a low loading coefficient is more favorite for high-pressure rotor in the counter-rotating elementary stage designing process.

对转涡轮高压级基元设计应尽量选择较大载荷系数等观点和建议。

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Counter-rotating turbine technology can have great advantages on improving the thrust-weight ratio, specific fuel consumption and the overall performance of an aeroengine, but it also brings a lot of pressing problems.

对转涡轮技术在提高涡轮航空发动机推重比、降低耗油率以及提高飞机的整机性能等方面具有明显的优势，但是同时也带来很多急需解决的问题。

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There are three kinds of underwater vehicle propulsion ways: counter-rotating propeller, ducted propeller and water jet propulsion.

水下航行器推进方式主要有三种，对转桨、导管桨以及喷水推进器。

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Study on Hub Ratio Optimization Design of Counter-rotating Axial Flow Fan

对旋轴流通风机最优轮毂比的研究

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Numerical Simulation of Reactive Extrusion Processes for Free Radical Polymerization in Counter-rotating Twin Screw Extruder

啮合异向旋转双螺杆挤出机内自由基聚合反应挤出过程的数值模拟

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On-line monitoring and trouble diagnosis system of counter-rotating type of axial fan for mine is introduced.

介绍了矿用对旋轴流式主通风机的在线监测和故障诊断系统.

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They are caused by the counter-rotating waves set up in the earth's electric field.

他们是导致在地球电场上形成逆向旋转波动的原因.

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The Analysis on Performance Test of Counter-rotating Fan

对旋式通风机性能试验分析

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