| 摘要 |
The invention finds application is hydraulics, and in particular in the runner wheels of axial or radial hydraulic or pneumatic machines. It improves the stream-lining and reduces resistance. The blade consists of a wedge-like front part (1) and a pointed rear part (2). The ratio of the diameter (9) of the largest inscribed circle (8) and the total length L of the chord (7) of the blade is from 0.05:1 to 0.2:1. The centre of the largest inscribed circle (8) is at a distance over the chord (7) ranging from 0 to D/2. The total length L of the chord (7) is divided by the diameter (9) of the largest inscribed circle (8) in a ratio from 1:10 to 1:1. 1 claim, 3 figures
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