Abstract: An electrical protection device of circuit-breaker type including a casing, a severing system, positioned in the casing, configured to assume inactivated and activated states corresponding to the on and off states of the electrical protection device, respectively, and a connection system configured to assume an open state in which it allows the electrical cable to be inserted and a second, closed state in which it surrounds the electrical cable. The connection system and the severing system are configured and arranged such that, when the connection system is in the closed state, the severing system severs the electrical cable when passing from the inactivated state to the activated state.

Abstract: A device for centralized management of an aircraft flight management system is provided, of the type of human-machine interface called FMD (for Flight Management Display), and which includes a plurality of functional components associated with human-machine interfaces. In particular, the device comprises a component and its ‘waypoint list’ interface in order to display the list of waypoints of a flight plan, a component and its ‘flight-phase pages’ interface in order to meet a need in respect of construction of the flight plan, and of following and editing of the latter, a component and its ‘location and database management’ interface, and a component and its ‘system messages’ interface, the system messages being those of the flight manage system.

Abstract: A switching device including at least one main breaker, an actuator configured to cause a change of state of the main breaker, from a first to a second state, counter to a spring generated force, the actuator being powered by a control signal equal to a first level to cause the change of state of the main breaker then to a second, lower level, to hold the main breaker in the second state. The switching device comprises a current sensor configured to control the control signal to increase it to a third level higher than the second level if the current flowing in the main breaker is higher than or equal to a given operating threshold, to avoid a spurious change of state of the main breaker. The switching device comprises a re-armable protection system for controlling the time for which the control signal is held at the third level.

Abstract: An aircraft with electric or hybrid propulsion which includes an electrical installation including at least a first electrical network and at least a second electrical network operating at a voltage higher than that of the first electrical network. This second electrical network includes at least an electrical-energy distribution system, at least a reversible electric motor for aircraft propulsion directly or indirectly connected to the electrical-energy distribution system, at least a reversible electrical system directly or indirectly connected to the electrical-energy distribution system, and a safety unit positioned as close as possible to each electric motor and to each reversible electrical system.

Abstract: A switching device includes at least one main contactor, a control power supply and an actuator configured to cause the main contactor to change from an open to a closed state against a force generated by the spring. The contactor has a blade and at least one terminal, the blade being configured to assume a position in contact with the terminal and a position not in contact with the terminal. The switching device includes a detection system configured to determine the contact or non-contact blade position of the main contactor, to generate at least one second signal as a function of the determined blade position of the main contactor and to transmit the second signal to the control power supply. The control power supply is configured to generate a control signal configured to keep the main contactor in the closed state upon reception of the second signal.

Abstract: An electrical circuit breaker assembly, and a method for its operation, including a conductive element of an electrical circuit and a cut-off device configured to be activated by a pyrotechnic element and that is configured to sever the conductive element in a cut-off zone delimited by a downstream point. The electrical circuit breaker assembly further includes a contactor element configured to be activated by a pyrotechnic element, the contactor element being configured to connect the downstream point of the cut-off zone to an earth conductor of the electrical circuit prior to a severing of the conductive element or simultaneously with the severing of the conductive element.

Abstract: An aircraft with electric or hybrid propulsion which includes an electrical installation including at least a first electrical network and at least a second electrical network operating at a voltage higher than that of the first electrical network. This second electrical network includes at least an electrical-energy distribution system, at least a reversible electric motor for aircraft propulsion directly or indirectly connected to the electrical-energy distribution system, at least a reversible electrical system directly or indirectly connected to the electrical-energy distribution system, and a safety unit positioned as close as possible to each electric motor and to each reversible electrical system.

Abstract: A switching device including at least one main breaker, an actuator configured to cause a change of state of the main breaker, from a first to a second state, counter to a spring generated force, the actuator being powered by a control signal equal to a first level to cause the change of state of the main breaker then to a second, lower level, to hold the main breaker in the second state. The switching device comprises a current sensor configured to control the control signal to increase it to a third level higher than the second level if the current flowing in the main breaker is higher than or equal to a given operating threshold, to avoid a spurious change of state of the main breaker. The switching device comprises a re-armable protection system for controlling the time for which the control signal is held at the third level.

Abstract: A method for managing systems, which includes at least a step for displaying a mimic diagram representation of the state of at least one system, the mimic diagram representation being composed of actuators and of links between the actuators, an actuator representing an element of the system that can be controlled. The method further comprises the steps of: detecting an interaction with an actuator; determining a number of controllable states for an element of the system represented by the actuator; configuring a multi-state interactor as a function of the number of controllable states and of the state of the system; and generating, on the state mimic diagram representation, a representation of the multi-state interactor including the commands available for controlling the element according to the state of the system.

Abstract: A method is provided for supervising security of an architecture having a plurality of interconnected clouds. A cloud includes a plurality of resources and a security supervisor. The plurality of resources forms in the cloud a plurality of groups of resources associated respectively with a security domain. A security controller supervises the resources of the domain, and a plurality of physical machines contains the resources of the plurality of clouds. The method includes: receiving a security event by a security controller of a first cloud, originating from a first resource associated with a first security domain; dispatching said security event to the security supervisor of the first cloud; and dispatching by the security supervisor of the first cloud a security order in reaction to the security event to at least one second security controller of the first cloud and dispatching the security order by the second security controller to a second resource supervised by the second controller.

Abstract: A roller for a high temperature annealing line includes a cylindrical shell and an axial support element and including a spindle at at least one of its ends, and first and second keys fastened to the axial support element and each arranged in a respective first or second through opening formed in the shell. The first key is mounted to bear against a first circumferential bearing surface of the first through opening while the second key is mounted against a second circumferential bearing surface of the second through opening opposite to the first circumferential bearing surface of the first through opening in a circumferential travel direction. The first key is mounted to bear against the second longitudinal bearing surface of the first through opening, while the second key is mounted against the first longitudinal bearing surface of the second through opening opposite to the second longitudinal bearing surface.

Abstract: A method is provided for supervising security of an architecture having a plurality of interconnected clouds. A cloud includes a plurality of resources and a security supervisor. The plurality of resources forms in the cloud a plurality of groups of resources associated respectively with a security domain. A security controller supervises the resources of the domain, and a plurality of physical machines contains the resources of the plurality of clouds. The method includes: receiving a security event by a security controller of a first cloud, originating from a first resource associated with a first security domain; dispatching said security event to the security supervisor of the first cloud; and dispatching by the security supervisor of the first cloud a security order in reaction to the security event to at least one second security controller of the first cloud and dispatching the security order by the second security controller to a second resource supervised by the second controller.

Abstract: A roller for a high temperature annealing line includes a cylindrical shell and an axial support element and including a spindle at at least one of its ends, and first and second keys fastened to the axial support element and each arranged in a respective first or second through opening formed in the shell. The first key is mounted to bear against a first circumferential bearing surface of the first through opening while the second key is mounted against a second circumferential bearing surface of the second through opening opposite to the first circumferential bearing surface of the first through opening in a circumferential travel direction. The first key is mounted to bear against the second longitudinal bearing surface of the first through opening, while the second key is mounted against the first longitudinal bearing surface of the second through opening opposite to the second longitudinal bearing surface.

Abstract: An access control system and method, a component-based kernel including it, and its use. A compromise is achieved between security and reconfigurability while providing high security by combining, in a system for controlling access by subjects S to objects, whether secured or not, for operations mij, access control decision means (10) and an access protection mechanism (PA) that enables access to be authorized or denied depending on the validity of access capacities. The access control decision means (10) allocate capacities for access to non-secured objects and modify the validity of capabilities for access to secured objects based on access rights, said decision means (10) being implemented by the access protection mechanism (PA) if the access capabilities are invalid.

Abstract: The method comprises forming a coating on the product of composite material to be protected. The coating contains a mixture of a non-oxide refractory ceramic in finely-divided form, at least one refractory oxide in finely-divided form and providing healing properties by forming a glass, and a binder constituted by a polymer that is a precursor of a non-oxide refractory ceramic. The polymer is transformed into a ceramic to obtain a protective layer comprising a non-oxide refractory ceramic phase and a healing phase which together constitute two interpenetrating lattices. After the ceramic precursor polymer has been transformed, a final heat treatment step may be performed at a temperature higher than the softening or melting temperature of the healing phase.

Abstract: Anti-oxidation protection for a silicon compound under both an active oxidation condition and a passive oxidation condition is achieved by forming an intermediate layer devoid of the element silicon between the surface of the silicon compound ceramic, such as SiC, and a silica based vitreous outer layer, such as SiO.sub.2, to be subsequently deposited. The intermediate layer is made of alumina (Al.sub.2 O.sub.3) or an alumina precursor, so as to constitute a reaction barrier between the silicon compound and the silica outer layer on the one hand, and trap any amount of silica that may be formed by an oxidation of the silicon compound.