US 2013/0045107 A1 · PROPELLER BLADE

Abstract

A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.

Claims20

Dependent claims

A propeller blade, comprising:

a front surface;
an opposing back surface;
a leading end;
a trailing end;
and
an upper end that curves from the front surface toward the back surface;
wherein a radius of curvature of the upper end varies along a length of the upper end.

4 more elements

Dependencies are inferred from the claim text.

Propeller blade

Life of this patent

Propeller blade

Life of this patent

Abstract

Claims20