A self-adjusting variable pitch propeller (1) for marine use, comprising a central hub (2) with an axial propeller centre line (C) defining the rotational axis of the propeller and a plurality of blades (50, 50') extending radially from the hub. The hub (2) exhibits a central bore (3) arranged to receive a rotating drive shaft (S). Each blade (50, 50') is pivotally fixed to the hub (2) and pivotal about a respective blade pivot axis (P) which extends radially from the hub (2) through the respective blade (50, 50'). Each blade (50, 50') exhibits a leading edge (51, 51'), a trailing edge (52, 52'), a pressure side (54. 54') exhibiting a pressure side area and a suction side (53, 53') exhibiting a suction side area. The blades (50) are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis (P) of each blade (50, 50') is positioned such that > 50% of the suction side (53, 53') area and of the pressure side (54, 54') area is arranged between the trailing edge (52, 52') and the pivotal axis (P) of the respective blade (50, 50').
A SELF-ADJUSTING VARIABLE PITCH PROPELLER
2023-12-21
Patent
Elektronische Ressource
Englisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |