Propeller Blade With Relatively Movable Counterweight

摘要

A propeller rotor has a hub mounting a plurality of blades. A counterweight is movably mounted on the blade. A pitch change mechanism for changing an angle of incidence of an airfoil is associated with each of the blades. The counterweight twists the blades toward an increased pitch direction should the pitch change mechanism fail. A stop member stops rotation of the counterweight as the blade moves to a feather position.

主权项

1. A propeller rotor comprising:
a rotor mounting a plurality of blades, said blades having a root mounted in a hub of said rotor and a counterweight movably mounted on said blades; a pitch change mechanism for changing an angle of incidence of an airfoil associated with said blades and said counterweight for biasing said blades toward an increased pitch direction should said pitch change mechanism fail; and a stop member for stopping rotation of said counterweight and said counterweight with said blade as said blade moves to a feathered position.