Abstract: Underwater craft including means for launching an underwater vehicle using water pressure, including a vehicle-launching tube having a front part and a rear part and the rear part of which is connected to a water distribution tank itself connected to a water tube in which is positioned a piston for delivering water into the rear part of the tube in order to push and eject the vehicle, is characterized in that the piston is associated with a linear electric actuator for moving same.

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.

Abstract: A projectile launch detector, including a body, a mast and a blade rigidly connected to the mast; the mast being capable of sliding between a retracted configuration and a deployed configuration, and capable of pivoting between a first and a second angular position. The detector may further includes a first elastic return element to return the mast to the deployed configuration relative to the body; and a first associated sensor; and a second elastic return element to return the mast to the first angular position relative to the body; and a second associated sensor.

Abstract: The recovery device comprises a floating cradle configured to receive and support the vehicle, the cradle having an entrance for the vehicle situated at a rear end of the cradle and delimited between two lateral portions, the cradle being configured or capable of being configured with a rear lateral extension extending toward the rear from one of the two lateral portions, the other lateral portion having no rear lateral extension.

Abstract: Disclosed is a hull device designed to be reversibly attached to an outer surface of a ferromagnetic structure of a marine or submarine system or vessel. The device includes at least one attachment surface suitable for attaching the device to the structure, and a plurality of permanent magnets arranged in the vicinity of the attachment surface in order to attach the device to the structure.

Abstract: This method includes emitting, by an emitter at an emitting depth, moved along an axis, at least one incident sound wave at an emitting frequency, receiving a first sound wave reflected by a first reflective object at a first depth and a second sound wave reflected by a second reflective object at a second depth, greater than the first depth, providing a first velocity at the first depth, and determining a second velocity of the sound waves at the second depth, from the frequencies of the first and second reflected sound waves, the emitting frequency and the first velocity.

Abstract: The invention relates to a reflectometry system for detecting faults on a hardened multipoint connector of an electrical network, of the type that comprises a measuring probe, characterized in that it comprises an interfacing and impedance matching part that is electrically suitable for mounting on the connector to be tested and comprises a body provided with at least one element in the form of a collector ring for the contact masses of the connector and a measuring opening for the probe of the reflectometry system.

Abstract: Disclosed is a mast intended to equip a marine or submarine vessel. The mast includes a metal structure extending along an axis and a fairing arranged externally to the structure in a direction normal to the axis. The fairing is removably assembled to the structure.

Abstract: Disclosed is a naval platform equipped with a deck-landing/takeoff zone for at least one aircraft and dolly-type mechanism for handling the aircraft to move it over the deck-landing/takeoff zone. The dolly-type mechanism includes a vacuum disc for immobilizing the dolly and thereby securing the aircraft in position on the deck-landing/takeoff zone, the operation of which is triggered by an analyzer of the behavior of the platform in order to avoid any risk of uncontrolled movement of the aircraft.

Abstract: Disclosed is a weapon tube and particularly a torpedo tube structure including a system for holding the weapon in a storage position in the tube, including a clamping mechanism which is connected to the structure and can be moved by an actuator between a closed position for locking an interface part of the weapon in order to lock the weapon in position in the structure and an open position for releasing the interface part and therefore the weapon, the structure includes an elastic unit for soliciting the clamping mechanism in the closed position.

Abstract: The invention concerns a device for monitoring the insulation and/or continuity of at least one electric cable including a plurality of electrical wires, wherein the device comprises a measuring circuit that can be connected to the electrical wires, wherein the measuring circuit comprises: a measuring stage comprising a voltage generator; a switching stage that can be connected to the measuring stage, suited to connect each electrical wire automatically and successively to the measuring circuit and/or suited to connect the measuring circuit to ground; a looping stage of the measuring circuit that can be connected, electrical wire to electrical wire, to the switching stage; wherein the looping stage is configured to operate automatically in at least one of two modes, insulating or resistive, respectively associated with the monitoring of the insulation or the monitoring of the continuity.

Abstract: A naval platform has a zone for the deck landing/take-off of an aircraft and an aircraft handler, to move the aircraft over the deck landing/take-off zone. The aircraft handler includes a body in the form of a bar for gripping and securing the main landing gear of the aircraft, provided with an anchoring hook mounted to slide in at least one rail, guiding the the aircraft on the deck landing/take-off zone. The hook is retractable, allowing the release of the body in the form of a gripping and securing bar from the rail, the body gripping the landing gear of the aircraft. The movement of the aircraft brings the body into position on the rail, and the hook into a position in which it faces the rail, and the hook back into an anchoring position in the rail in order to secure the aircraft.

Abstract: A weapon launching tube structure, and in particular a torpedo launching tube structure, includes a tube inside which weapon guiding slides are mounted at regular intervals around the weapon. The slides are made from a single slide blank obtained by an extrusion process.

Abstract: Disclosed is an ordnance-launching tube, including a rear door and an expulsion circuit between a source of pressurized fluid and the tube, and provided with a unit for closing this circuit having an actuator that can be maneuvered by an operator in order to permit the expulsion, the actuator being associated with a detector for the presence of the rear door in the tube-closing position and with a lock for this rear door in the tube-closing position, which can be actuated via a bolt that the operator can move between a first position preventing expulsion and a second position permitting expulsion when the door is in the closing position and locked. The bolt includes an abutment movable between a position blocking the actuator in position to prevent expulsion, and a position releasing the actuator so that they may be actuated by the operator, and thus permit expulsion.

Abstract: Disclosed is a method and a device for improving the safety of a maritime platform, installed at sea or navigating at sea, including an observation of sea waves striking the maritime platform, an operation of the maritime platform being controlled via a control system. The method and device are suitable for: —acquiring elevation values of the surface of the sea at a plurality of points, making it possible to characterize at least one group of sea waves, a sea wave being likened to a wave defined by a period and an amplitude, —calculating at least one characteristic quantity of each group of waves, —comparing the calculated characteristic quantity to a hazard threshold, —if the comparison indicates the hazard threshold is crossed, raising an alert intended for the control system.

Abstract: Disclosed is a submarine provided with lithium-ion battery-based electricity storage, assuming the form of associated individual storage elements (2, 3, 4), each element (2, 3, 4) being provided with an electronic connecting and operation management card (5, 6, 7), in which: the associated individual storage elements (2, 3, 4) are arranged in a row; each electronic card (5, 6, 7) of an element of a row (1) is mechanically and electrically connected, at its ends (8, 9), to the electronic cards (5, 6, 7) of the row (1) that are its closest neighbors, to form a strip of cards (1a) for this row (1); this strip of cards (1a) can be manipulated by an operator from at least one of its ends and is able to slide relative to the storage elements (2, 3, 4) of the row (1).

Abstract: Disclosed is a method and a device for improving the safety of a maritime platform, installed at sea or navigating at sea, including an observation of sea waves striking the maritime platform, an operation of the maritime platform being controlled via a control system. The method and device are suitable for: —acquiring elevation values of the surface of the sea at a plurality of points, making it possible to characterize at least one group of sea waves, a sea wave being likened to a wave defined by a period and an amplitude, —calculating at least one characteristic quantity of each group of waves, —comparing the calculated characteristic quantity to a hazard threshold, —if the comparison indicates the hazard threshold is crossed, raising an alert intended for the control system.