The invention provides a curved culvert type marine propeller, relating to marine propellers. The curved culvert type marine propeller mainly comprises a coupling component, a propeller shaft, a curved culvert, propeller blades and a tail cone, wherein the curved culvert type marine propeller is driven to rotate according to a rotation direction by a ship shaft so as to drive a ship to travel forwards. When the ship travels forwards, the cross section diameter of the front edge of the culvert is far greater than that of a throat of the culvert, resistance is generated by the front edge of the culvert, then, the hydrostatic pressure of a water absorbing area in the front edge of the culvert is increased, thus, the air bubble limit of the propeller is delayed, and the degree of cavitation is lowered, so that noise and vibration are lowered, the cavitation is lowered, and the performance of the propeller is improved; blade tips of the propeller blades of the curved culvert type marine propeller are connected together with the internal surface of the curved culvert, so that the curved culvert type marine propeller can be high in structural strength and rigidity and is suitable for being made from composite materials which are represented by carbon fiber reinforced plastics.
Curved culvert type marine propeller
2015-07-15
Patent
Elektronische Ressource
Englisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |