Propeller with folding blades and propulsion system
AssigneeVelettrica S.R.L.
InventorsRoberto Baffigo, Paolo Bellomi
Life of this patent
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Abstract
A propeller with folding blades for the propulsion of a mobile vehicle inside a fluid is provided having a movement mechanism rotatable around a central rotation axis of the propeller; and a plurality of blades. Each blade has a root end connected to the movement mechanism by a gear to allow the movement of the blade from an opening position to a closed position and vice versa, wherein in the closed position the plurality of blades are configured to form a continuous solid in the form of a spindle wherein a leading edge of a first blade (S′) is configured to osculate a trailing edge of a second blade following the first blade (S′) in such a way as to form a continuous surface between the first blade (S′) and the second blade (S″).
Claims11
A propeller with folding blades for the propulsion of a mobile vehicle inside a fluid, the propeller comprising:
- a movement mechanism rotatable around a central rotation axis of the propeller;
- and
- a plurality of blades, wherein each blade comprises a root end connected to the movement mechanism by means of a gear to allow the movement of said blade from an opening position to a closed position and vice versa,
- wherein in the closed position the plurality of blades is configured to form a continuous solid in the form of a spindle wherein a leading edge of a first blade is configured to osculate a trailing edge of a second blade following the first blade in such a way as to form a continuous surface between the first blade and the second blade, and
- wherein, in the transition from the opening to the closed position and vice versa, the blade is configured to rotate around a rotation axis of the blade forming an angle α with the central axis of rotation of the propeller, wherein said angle α is different from 90 degrees.
Dependencies are inferred from the claim text.