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1. 发明授权

US06866482B2 High-performance propeller 有权
标题翻译：高性能螺旋桨
公开(公告)号：US06866482B2
公开(公告)日：2005-03-15
申请号：US10204984
申请日：2001-02-05
申请人： Wei Han , Yuanling Li , Lianyun Sun
发明人： Wei Han , Yuanling Li , Lianyun Sun
IPC分类号： B63H1/26 , B63H1/16 , B63H1/28 , B64C11/00 , B64C11/18 , F04D29/38 , F04D29/18
CPC分类号： B63H1/28 , B63H1/16 , B64C11/001 , B64C11/18 , F04D29/384
摘要： A high-performance propeller has one hub and a plurality of blades, characterized in that a double-side or a single-side arc brim is provided at the tip of each blade. The propeller of the invention can provide a small induced drag and convert the centrifugal force to the effective force so as is to increase the differential pressure near the tip of blades and thereby increase the acting force on blades. Under the condition of same power consumption, it has been tested for the large propeller in the type of lateral inclination that the amount of flow is increased about 12%˜17%, which is equivalent to save energy 40%˜70%. Since the fluid dynamic performance presents the aspect ratio approaching infinity, the width of the blades can be increased whereas the induced drag is not increased. Applying the method of increasing the area of the blades and decreasing the velocity of outflow fluid, the effect on saving of energy can be further improved greatly on the present basis.
摘要翻译：高性能螺旋桨具有一个轮毂和多个叶片，其特征在于，在每个叶片的尖端处设置双面或单侧弧形边缘。本发明的螺旋桨可以提供小的诱导阻力并将离心力转换成有效力，以便增加叶片尖端附近的差压，从而增加对叶片的作用力。在同等功耗的条件下，已经对横向倾斜型大型螺旋桨进行了测试，流量增加了约12％〜17％，相当于节能40％〜70％。由于流体动力学性能使纵横比接近无穷大，所以叶片的宽度可以增加，而感应阻力不增加。应用增加叶片面积和降低流出液速度的方法，在现有的基础上，可以大大提高对节能的效果。

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