Underwater propeller device with pulsed jets
AssigneeScuola Superiore Di Studi Universitari E Di Perfezionamento Sant'anna
InventorsAndrea Arienti, Francesco Giorgio Serchi
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Abstract
A device, which is autonomous or which can be associated with another structure, for propulsion in a liquid environment, is described. The device has a bladder body made of a soft material, developing along and around a central longitudinal axis, defining an internal chamber between a dorsal wall and a ventral wall; in the bladder body, an inlet opening and an outlet opening of a liquid in and out of the chamber, arranged at a longitudinal end of the body; and drive means for driving a contraction of the bladder, arranged on the dorsal wall and having a mechanical connection with the ventral to cyclically attract the ventral wall to the dorsal wall, thereby causing a pulsed ejection of a propeller jet from the chamber through the outlet opening.
Claims15
An underwater propeller device comprising:
- a bladder body completely made of a soft material, developing along and around a central longitudinal axis, defining an internal chamber between a dorsal wall and a ventral wall;
- in said bladder body, an inlet opening and an outlet opening of a liquid in and out of said chamber, arranged at a longitudinal end of the body;
- and
- drive means for driving a contraction of said bladder, arranged on said dorsal wall and comprising a mechanical connection with said ventral wall to cyclically attract the ventral wall to the dorsal wall, thereby causing a pulsed ejection of a propeller jet from said chamber through said outlet opening.
Dependencies are inferred from the claim text.