MARINE PROPELLER BLADES WITH REVERSE CUPPING

摘要

A propeller has a plurality of blades extending radially outwardly of a hub and a plurality of cups respectively affixed to the plurality of blades. Each of the plurality of blades has a facing surface and a back surface. The blade has a leading edge and a trailing edge. The cup is affixed to the back surface of the blade in spaced relation to the trailing edge and in spaced relation to the outer edge. The cup is affixed to a greatest thickness of the blade. The cup has a curvature corresponding to a curvature of the blade. The blade is positioned at approximately ⅔ of a width dimension from the leading edge.

主权项

1. An apparatus comprising:
a blade having a facing surface and a back surface, said blade having a leading edge and a trailing edge, said blade having an outer edge; and a cup affixed to said back surface of said blade, said cup being in spaced relation to said trailing edge and in spaced relation to said outer edge