In addition , the plane of the blades is parallel to the pole .
此外,桨叶的平面与支柱平行。
This design has been made possible using computational fluid dynamics to perfect the shapes of the blades and pods .
通过利用计算流体动力学,这种设计已经成为可能完善了桨叶和船壳的形状。
Before specific solutions can be tested , nasa must first collect data on how the rotor blades interact with air under a variety of operating conditions .
在测试特定的方案以前,nasa必须首先搜集在不同的运行条件下桨叶与空气如何相互作用的数据。
Its three blades have a total span of 82 metres and , together with the tower that supports them , weigh 234 tonnes .
风轮机的三片桨叶总长达82米,下有塔身支撑,一共重达234吨。
An inspection revealed that one of the blades in the turbine had broken off and there were cracks in other blades .
一项调查发现,涡轮的一个桨叶已经断裂,其它桨叶也出现裂缝。
Unlike the blades on old-fashioned propeller engines , these blades spin around at the back of the engine .
老式的螺旋桨发动机的叶片安装在发动机前,而这种发动机的叶片在后面旋转。
The coils are then housed in an outer rim that encloses the rotating blades .
线圈被放在置于外部的一个框中,而这个框又是把旋转叶片包在中间。
Helicopters are limited in their forward speed by the spinning rotor blades that make hovering possible .
直升飞机那不停转动的旋翼叶片使其能够在空中悬停,但却限制了它向前的飞行速度。
That is partly because of increasing vibration , but mainly because the spinning rotor blades provide both lift and propulsion .
部分是因为不断增加得振动,但主要是因为旋转的旋翼叶片提供了提升力和推进力。
By contrast , fhi has opted for a downwind design , which puts the blades behind both nacelle and pole .