| 摘要 |
Apparatus for the generation of electrical or mechanical energy from a flowing fluid. The apparatus includes at least one blade of substantially helical configuration. The blade has a plurality of blade sections. Action of the flowing fluid on the blade causes it to rotate around its axis. The rotational motion is used to generate electrical or mechanical energy. Also disclosed is a helical blade wherein the pitch length and/or radii varies along the length of the helical blade profile.
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