Underwater projectile, associated assembly and launch method
AssigneeNaval Group
InventorThibaut De Sarran
Life of this patent
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Abstract
A projectile including: a shell; a rotating shaft; and a screw which can be rotated by the rotating shaft. The screw and the shell include, respectively, a stop and a counter-stop opposite each other. The screw is capable of sliding axially between a first position, in which a non-zero clearance is provided between the stop and counter-stop, and a second position, in which the stop and counter-stop are in contact. An elastic return element reversibly deformable between a first and a second state of stress which correspond to the first and second positions of the screw, respectively, the stress of the first state being lower than the stress of the second state.
Claims15
A projectile comprising a shell and a propulsion element, said propulsion element comprising:
- a first rotating shaft configured to be set in rotation relative to the shell about an axis;
- and a first screw configured to be driven in rotation by said first rotating shaft;
- wherein:
- the first screw and the shell respectively comprise a first stop and a first counter-stop opposite one another;
- the first screw is configured to slide axially along the first rotating shaft between a first position, in which a first non-zero clearance is provided between the first stop and counter-stop, and a second position, in which the first stop and counter-stop are in contact;
- and
- the propulsion element further includes a first elastic return element, which is reversibly deformable along the axis between a first and a second state of stress, which first and second states correspond respectively to the first and second positions of the first screw, the stress of the first state being lower than the stress of the second state.
Dependencies are inferred from the claim text.