Abstract: The invention relates to systems provide with control devices comprising an important number of displaying devices for displaying an important number of parameters according to accurate configurations, as for example, a modern aircraft instrument panel provided with several displays. The inventive method for configuring or reconfiguring the totality of displaying devices consists in inducing said configuration or reconfiguration by an event. Each elementary configuration is substantially obtainable by means of a reconfiguration logic language and an interpreter algorithm, wherein said logic language substantially comprises a reconfiguration domain, properties, transition rules, and preferences and said interpreter algorithm makes it possible to convert each transition rule into a list of elementary reconfiguration.

Abstract: The invention relates to a security-protected system for positioning by satellites, comprising a constellation of satellites (11) sending out positioning signals under the control of a set of ground stations (14). A user receiver of the said positioning signals comprises means for sending, to a ground station, a request calling for a key which is necessary for interpreting them, advantageously accompanied by a recopy of the positioning signals received. User servicing ground stations comprise means for receiving this request, calculating the position of the user and verifying whether the user possesses a privileged status, and means for addressing the said key to the user receiver, in the event that the verification is positive, this key further comprising means for interpreting the positioning signals with the aid of the key so as to deduce his own position therefrom.

Abstract: An equipment includes two intraocular implants whose the optic part (7g, d) is provided, proximate its free end, with an actuating elements (10g, d) for varying the length of the edge in response to a control signal (Sc); two pressure sensors (4d, 4g) located between the eye balls and the insertion point either of the external rectus muscles or of the internal rectus muscles, for measuring each a pressure and transforming it into a pressure signal; a comparator for comparing the pressure signals and, if they fulfil a predetermined condition, in sending a condition fulfillment signal (Scs) to a relay (5d, 5d) each associated with one implant; and two such relays (5d, 5g) for sending, on reception of the signal (Scs), a control signal (Sc) to the actuating elements (10) of its associated implant.

Abstract: The invention relates to a rocket engine nozzle comprising a system for controlling jet separation of the flow in the nozzle, wherein said control system exhibits a plurality of separation triggering elements (5, 10) arranged in such a way as to generate, from mutually spaced initiation points (9), distinct zones (6) of jet separation, so as to form a three-dimensional separation of the flow. The flow control system can exhibit at least two triggering elements (5, 10).

Abstract: The invention relates to a propulsion device comprising a gas ejection nozzle and an injection chamber for injecting at least one propellant fluid. According to the invention, the device has an induction loop which surrounds a zone of the nozzle and also an electricity generator to feed said induction loop, in particular under drive from a heat engine whose heat source is a nuclear core and whose heat sink is a cryogenic liquid which is subsequently used for propulsion.

Abstract: The invention relates to a propulsion device comprising a gas ejection nozzle and an injection chamber for injecting at least one propellant fluid. According to the invention, the device has an induction loop which surrounds a zone of the nozzle and also an electricity generator to feed said induction loop, in particular under drive from a heat engine whose heat source is a nuclear core and whose heat sink is a cryogenic liquid which is subsequently used for propulsion.

Abstract: The present invention relates to a self-fastening backing (A) for a coated abrasive product, comprising a backing for abrasive (1) bonded to a self-fastening sheet (1a), characterized in that the said self-fastening backing (A) has a water vapour permeability of greater than 1 g.m−2/24 h, particularly one bonded by a porous adhesive matrix (1b).

Abstract: An electrically controlled hydraulic actuating system includes a servocontrol including a cylinder, a piston dividing the cylinder into two chambers each provided with a hydraulic connection port, a control valve connected to a hydraulic circuit. A two-way hydraulic pump is driven in rotation by an electric motor driven by power electronics. A switching device allows the connection ports of the chambers to be connected either to the control valve or the pump. The switching device connects the hydraulic connection ports both to the control valve and the pump, so as to allow the servocontrol to be supplied the sum of the hydraulic power delivered by the hydraulic circuit and the hydraulic power generated by the pump actuated by the electric motor.

Abstract: The invention relates to a propulsion device comprising a gas ejection nozzle and an injection chamber for injecting at least one propellant fluid. According to the invention, the device has an induction loop which surrounds a zone of the nozzle and also an electricity generator to feed said induction loop, in particular under drive from a heat engine whose heat source is a nuclear core and whose heat sink is a cryogenic liquid which is subsequently used for propulsion.

Abstract: The invention relates to a rocket engine nozzle comprising a system for controlling jet separation of the flow in the nozzle, wherein said control system exhibits a plurality of separation triggering elements (5, 10) arranged in such a way as to generate, from mutually spaced initiation points (9), distinct zones (6) of jet separation, so as to form a three-dimensional separation of the flow.

Abstract: The invention concerns a hydraulic circuit (17) and a control valve (18) dimensioned to be capable of providing the greater part the control surface (3) actuating, which requires less power than the system maximum performances Moreover, a bi-directional hydraulic pump (23), driven by an electric motor (24), can supply backup power which added to said circuit (17) power can ensure said maximum performances.

Abstract: The invention relates to a security-protected system for positioning by satellites, comprising a constellation of satellites (11) sending out positioning signals under the control of a set of ground stations (14). A user receiver of the said positioning signals comprises means for sending, to a ground station, a request calling for a key which is necessary for interpreting them, advantageously accompanied by a recopy of the positioning signals received. User servicing ground stations comprise means for receiving this request, calculating the position of the user and verifying whether the user possesses a privileged status, and means for addressing the said key to the user receiver, in the event that the verification is positive, this key further comprising means for interpreting the positioning signals with the aid of the key so as to deduce his own position therefrom.

Abstract: The invention relates to a macro-porous composite that can be used as a bone reconstitution material. The composite is made up of a combination of synthetic aragonite and at least one medicinal substance such as notably, an antibiotic. The invention also relates to a method of producing a composite which includes producing a mixture includes grains of synthetic aragonite and at least one porogenic agent, compacting the mixture and heating the product obtained in such a way as to eliminate the porogenic agent. At least one medicinal substance is included before or after the step of eliminating of the porogenic agent.

Abstract: The invention relates to a macro-porous composite that can be used as a bone reconstitution material characterised in that it is made up of a combination of synthetic aragonite and at least one medicinal substance such as notably, an antibiotic. The invention also relates to a method of producing a composite characterised in that it consists of producing a mixture comprising grains of synthetic aragonite and at least one porogenic agent, compacting said mixture and heating the product obtained in such a way as to eliminate said porogenic agent, at least one medicinal substance being included before or after said step of eliminating of said porogenic agent.

Abstract: An apparatus and method for decoupling of the behavior of an aircraft which may determine a first control demand that is representative of the actuation of a control member, determine a transfer function that is representative of the behavior of an aircraft upon actuation of the control member, determine a second control demand that is capable of generating a decoupling based at least on a partial inversion of the transfer function and a non-inverted part of the transfer function, calculate an overall demand from the sum of the first and second control demands, and apply the overall demand to the aircraft.

Abstract: A structural cryogenic tank wall has an outer skin and an inner skin between which is a cavity containing a thermally insulative structure. The cavity is empty of any gas and contains at least one sensor for continuously verifying that the vacuum is maintained in order to monitor the structural integrity of the outer and inner skins and sealing of the cryogenic tank.

Abstract: Compositions of phenolic resins, for example, phenol formaldehyde resins, containing an additive of triethanolamine borate or an amine/oxygen-containing boron derivative mixture, e.g., triethanolamine and boric anhydride, are particularly useful for the manufacture of prepeg mats.

Abstract: An apparatus for reacting diluted molasses with lime in a tank 5 includes a pair of heat exchangers 12, 17, a pair of four-way valves 10, 14, an inlet circuit 2, 15 for the tank, and a circuit 8, 19 for recirculating part of the reacted molasses back through the tank. The positions of the valves are periodically switched which reverses both the circuit couplings of and the directions of flow through the heat exchangers, to thereby dissolve any built up deposits and crusts in the heat exchangers.