| 摘要 |
A fan blade 50 configured to mount to a rotating fan hub, the fan blade 50 comprising (a) a top surface 52 having a generally elliptical curvature, wherein the curvature of the top surface 52 is based on a first ellipse, (b) a bottom surface 54 having a generally elliptical curvature, wherein the curvature of the bottom surface 54 is based on a second ellipse, (c) a leading edge 56, wherein the top surface 52 and bottom surface 54 each terminate at the leading edge 56, and (d) a trailing edge 58, wherein the top surface 52 and bottom surface 54 each terminate at the trailing edge 58. (62) Divided Out of 553003
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