Patent ID: 6244919
Filing Date: 2001-06-12
Classification: B63H

Abstract:
Vertical axis and transversal flow nautical propulsor with continuous self-orientation of the blades, comprising: a plurality of blades rotatable about a vertical axis; a blade supporting plate for supporting the plurality of blades wherein said blade supporting plate is rotatable about a vertical axis independently with respect to rotation of the blades; a motor for rotating said blade supporting plate; a fixed pulse electric motor for each blade, for rotating said blade about its own vertical axis; a rotatable shaft; a rotor body supporting the rotatable shaft and coupled with said blade supporting plate; a plurality of spindles provided on the rotatable shaft, wherein the spindles are coaxial one with respect to the others and with respect to said rotatable shaft, and independently rotatably coupled with said rotatable shaft, wherein the number of said spindles corresponds to the number of the blades, said spindles being rotatable independently one with respect to the others in such a way to allow rotation of the relevant blade independently with respect to the others, said rotatable shaft and the spindles each having an inner end within said rotor body and an outer end outside said rotor body, wherein said inner and outer ends of each of the spindles includes first motion transfer means for transferring motion from the relevant electric motor to the relevant rotating blade, wherein the blade axis and the axis of the relevant electric motor include corresponding second motion transfer means for transferring motion to said first motion transfer means; and an interface unit between an operator and a propulsor electronic control unit, wherein said electric motors are controllable by said electronic control unit in such a way to adjust a position and an orientation of the relevant blade in order to obtain for any operative situation, an optimal performance over an entire operative range of the propulsor.