Propeller assembly

A variable pitch aircraft propeller assembly comprising:

• a plurality of propeller blades each configured to rotate in a plane of rotation so as to generate thrust in a direction perpendicular to the plane of rotation, wherein each propeller blade of the plurality of propeller blades is configured to be linked to an actuator which controls the pitch of each propeller blade of the plurality of propeller blades, wherein the propeller assembly includes at least six propeller blades;
• and
• at least one counter-weight arrangement mounted on at least one propeller blade of the plurality of propeller blades, the at least one counter-weight arrangement comprising:
• a first counter-weight;
• and
• a second counter-weight;
• wherein the first and second counter-weights are arranged such that when the at least one propeller blade is in fine pitch, the counter-weights are in a first position with respect to the plane of rotation of the at least one propeller blade, and when the at least one propeller blade is substantially feathered, the at least one counter-weights are in a second position with respect to the plane of rotation of said propeller blade;
• and
• wherein the counter-weights are aligned such that a line drawn between the center of mass of the first counter-weight and the center of mass of the second counter-weight is perpendicular to a longitudinal axis of the propeller blade;
• and
• wherein the counter-weights are arranged only on every other propeller blade.