CONTINUOUSLY VARIABLE PITCH PROPELLER

摘要

A self-adjusting continuously variable pitch propeller comprising a central hub (20) defining an axis of propeller rotation and a plurality of blades (10) connected to and extending from said central hub substantially normal to the axis of rotation, each blade being mounted for rotation about a pitch axis (60), a cam/cam follower mechanism (18) to translate centrifugal forces imposed on that blade into a force tending to rotate that blade toward a course pitch, that force being opposed by water pressure tending to decrease blade pitch. The cam including a profile to adjust the effect of the opposed forces to provide a continuously adjusting stable blade pitch dependent upon propeller operating conditions.