| 摘要 |
<p>A fan kit comprises a hub, a plurality of fan blades, and a plurality of inserts. The hub is rotatable about an axis, wherein the hub comprises a plurality of mounting tabs extending outwardly relative to the axis, wherein each mounting tab of the plurality of mounting tabs has a leading edge and a trailing edge. Each fan blade of the plurality of fan blades has a hollow interior, wherein the hollow interior of each fan blade is defined by at least one interior surface, wherein the hollow interior of each fan blade is configured to insertingly receive a corresponding mounting tab of the plurality of mounting tabs. The plurality of inserts are configured to be positioned in the hollow interior of the fan blades at locations between the mounting tabs and the interior surface of each fan blade. The inserts comprise a first set of inserts, wherein the inserts of the first set of inserts are configured to provide the fan blades with a first angle of attack when the inserts of the first set and the mounting tabs are inserted in the hollow interiors of the fan blades. The inserts also comprise a second set of inserts, wherein the inserts of the second set of inserts are configured to provide the fan blades with a second angle of attack when the inserts of the second set and the mounting tabs are inserted in the hollow interiors of the fan blades.</p> |
