小流量、高转速、小尺寸轴流风扇的设计是高性能直升机滑油冷却系统的关键技术之一。

In the oil cooling system of a high performance helicopter, the low mass flow, high rotating speed and small size axial flow fan design is a key task.

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这会增加一次风机的尺寸而减小从动风扇的尺寸。

This increases the initial primary air fan size and reduces the forced draft fan sizes.

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因此，可在不增加冰箱的总体尺寸以及不引起对于冷气的流入的阻力的情况下，增大涡轮风扇的叶片的高度。

Therefore, it is possible to increase the height of the blades of the turbo fan without increasing the total size of the refrigerator and causing resistance to the inflow of cool air.

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