Abstract: A method for guiding an autonomous aircraft, the aircraft includes an automatic pilot, a plurality of sensors and an imaging unit, the aircraft being configured to fly over a geographic zone comprising overflight prohibited zones, the guidance method can advantageously comprise a phase of real flight of the autonomous aircraft by using a given guidance law, comprising the following steps: determining a current state of the autonomous aircraft; determining an optimum action to be executed by using a neural network receiving the current state; determining a plurality of control instructions compatible with the guidance law based on the optimum action to be executed; transmitting to the automatic pilot the plurality of control instructions, which provides a new state of the autonomous aircraft.

Abstract: A method for analyzing dysfunctions of an embedded system including a phase for modeling this system and an analysis phase, the modeling phase including defining a set of resources, a set of services, a set of statuses and at least one rule for the acquisition of a status by a resource or by a service, the analysis phase including configuring the analysis including marking a marked event and analyzing acquisition rules to determine a set of basic events and conditions for the appearance thereof, leading to the appearance of the marked basic event.

Abstract: Disclosed is an electronic apparatus for assisting an aircraft pilot. The aircraft includes avionics equipment implementing operational capacities and a monitoring system configured to determine monitoring information from operational capacities and operating parameters of the avionics equipment. The assistance apparatus includes in an acquisition module configured to acquire the monitoring information and an anomaly detection module configured to detect at least one anomaly from among a breakdown of an avionics equipment and a failure of an operational capacity, from monitoring information and anomaly detection rules contained in a predefined database. The assistance apparatus includes an inference module configured to identify, for each anomaly, one or several causes that may have caused the anomaly, based on relationships between breakdowns and failures, the relationships being contained in the database.

Abstract: A method and a device for measuring the performance of a diagnoser of a system under diagnosis, which comprises a knowledge base comprising a set of failures of the system, of effects observed and of relations between failures and effects observed, and an algorithmic core. The method comprises a step of calculating a specific detection rate and a specific location rate for the knowledge base, respectively referred to as expected detection rate and expected location rate. It also comprises a step of calculating a specific detection rate and a specific location rate for the set consisting of knowledge base and algorithmic core, respectively referred to as detection rate obtained and location rate obtained; and a step of calculating the performance of the diagnoser as a function of the expected and obtained detection rates and of the expected and obtained location rates.

Abstract: A method for analyzing dysfunctions of an embedded system including a phase for modeling this system and an analysis phase, the modeling phase including defining a set of resources, a set of services, a set of statuses and at least one rule for the acquisition of a status by a resource or by a service, the analysis phase including configuring the analysis including marking a marked event and analyzing acquisition rules to determine a set of basic events and conditions for the appearance thereof, leading to the appearance of the marked basic event.

Abstract: Disclosed is an electronic apparatus for assisting an aircraft pilot. The aircraft includes avionics equipment implementing operational capacities and a monitoring system configured to determine monitoring information from operational capacities and operating parameters of the avionics equipment. The assistance apparatus includes in an acquisition module configured to acquire the monitoring information and an anomaly detection module configured to detect at least one anomaly from among a breakdown of an avionics equipment and a failure of an operational capacity, from monitoring information and anomaly detection rules contained in a predefined database. The assistance apparatus includes an inference module configured to identify, for each anomaly, one or several causes that may have caused the anomaly, based on relationships between breakdowns and failures, the relationships being contained in the database.

Abstract: A device and method for assisting with reconfiguration of an aircraft, an aircraft including such a device and an associated computer program product are disclosed. In one aspect, the aircraft has an operational configuration, is configured to move in an operational environment, and includes at least one avionic system, at least one avionic member, and at least one monitoring system configured to detect an abnormality of an avionic member or a perturbation of the operational environment and to generate a fault information. The device is connected between at least one monitoring system and at least one avionic system, and includes a reception module configured to receive a fault information from the monitoring system, an impact computation module configured to compute an impact on the operational configuration of the aircraft, and a transmission module configured to transmit the computed impact to at least one avionic system.

Abstract: A method for performing a maintenance function of a system under diagnosis includes a step for hierarchical decomposition of the system under diagnosis into sub-systems based on the model of the system and, for each sub-system, steps for determination of a model of the sub-system starting from the model of the system, and allocation of a diagnostic method depending on the processing and memory resources of said sub-system. The method allocated is a first diagnostic method based on the model of the system or a second diagnostic method based on predefined logical relationships. The method further includes calculation of the logical relationships for the sub-systems implementing the second diagnostic method, and the transfer of the logical relationships to the sub-systems implementing the second method and the transfer of the model to the sub-systems implementing the first method.

Abstract: A method and a device for measuring the performance of a diagnoser of a system under diagnosis, which comprises a knowledge base comprising a set of failures of the system, of effects observed and of relations between failures and effects observed, and an algorithmic core. The method comprises a step of calculating a specific detection rate and a specific location rate for the knowledge base, respectively referred to as expected detection rate and expected location rate. It also comprises a step of calculating a specific detection rate and a specific location rate for the set consisting of knowledge base and algorithmic core, respectively referred to as detection rate obtained and location rate obtained; and a step of calculating the performance of the diagnoser as a function of the expected and obtained detection rates and of the expected and obtained location rates.

Abstract: A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft.

Abstract: The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioral model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments.

Abstract: A method for determining diagnoses for a system having a plurality of pieces of equipment, the equipment being adapted to transmit signals indicating its operating state, includes the following steps: acquiring observations based on signals transmitted by the equipment of the system under diagnosis, and determining a global situation based on the acquired observations and predetermined failure trees associated with these observations, wherein a failure tree describes the relations between an observation and root causes, and a root cause indicates a failure in a piece of equipment; determining connected situations, a connected situation being a set of observations which, when considered in pairs, have at least one common root cause in their failure tree; determining partial diagnoses on the basis of each of the connected situations, the diagnoses including root causes associated with observations signalling a failure; and, displaying the diagnoses.

Abstract: The invention relates to a method for aiding the maintenance of a system, the system comprising a set of networked elements, the system being accompanied by indications defining subsets of networked elements Ei, each subset of networked elements Ei being associated with a probability of failure Pi, the including the steps of calculating a first value Ti for each subset of networked elements Ei, the first value Ti including an estimation of the maintenance time related to the repair of the subset of networked elements Ei, calculating a second value Fi for each subset of networked elements Ei, the second value Fi including a representation of a compromise between the estimation of the maintenance time Ti related to the repair of the subset of networked elements Ei and the probability of failure Pi of the subsets of networked elements Ei, and sorting the designated sets of items of equipment Ei in order of decreasing second value Fi.

Abstract: A method of preventive maintenance for an aircraft, the aircraft having components, including items of equipment of the aircraft and/or electronic modules and/or physical links. The lifetime information for the components is known. The aircraft also includes means for monitoring the components, a centralized maintenance system, and means for estimating the life time of the components. The aircraft carries out a set of functions, each being ensured by a chain of components. The method comprises several steps including, a first step of locating the degradations of the items of equipment, a second step making it possible to allocate the located degradations to the various functions of the aircraft, a third step of estimating the lifetime of the functions identified in the second step, and a fourth step of formulating the maintenance message constructed on the basis of the previous steps.

Abstract: A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft.

Abstract: A method for performing a maintenance function of a system under diagnosis includes a step for hierarchical decomposition of the system under diagnosis into sub-systems based on the model of the system and, for each sub-system, steps for determination of a model of the sub-system starting from the model of the system, and allocation of a diagnostic method depending on the processing and memory resources of said sub-system. The method allocated is a first diagnostic method based on the model of the system or a second diagnostic method based on predefined logical relationships. The method further includes calculation of the logical relationships for the sub-systems implementing the second diagnostic method, and the transfer of the logical relationships to the sub-systems implementing the second method and the transfer of the model to the sub-systems implementing the first method.

Abstract: The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioural model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments.

Abstract: A method for generating electronic documentation (DOC) for the maintenance of a set of equipment (EQPT), in particular of an aircraft, is provided. The method is beneficial in allowing the automatic generation of electronic documentation (DOC) updated dynamically in tandem with the progress in a maintenance operation on the set of equipment (EQPT). Utilization of particular schemes for constructing dynamic models (ABS) associated with sets of equipment (EQPT) is advantageously accomplished.

Abstract: The present invention relates to the field of aiding ground maintenance of an aircraft. More particularly, the invention consists of a portable access terminal intended to aid maintenance, commonly designated by the acronym PMAT for Portable Maintenance Access Terminal. The invention exhibits the advantage of allowing the consideration of human factors in the design of maintenance strategies and procedures in the field of aeronautics. The implementation of portable access terminals according to the invention in the heart of a system for aiding maintenance is aimed at limiting the risks of human errors within the framework of aircraft maintenance operations and, optionally, the adaptation of the maintenance strategies and procedures to particular profiles of maintenance personnel.

Abstract: The invention relates to a method for aiding the maintenance of a system, the system comprising a set of networked elements, the system being accompanied by indications defining subsets of networked elements Ei, each subset of networked elements Ei being associated with a probability of failure Pi, the including the steps of calculating a first value Ti for each subset of networked elements Ei, the first value Ti including an estimation of the maintenance time related to the repair of the subset of networked elements Ei, calculating a second value Fi for each subset of networked elements Ei, the second value Fi including a representation of a compromise between the estimation of the maintenance time Ti related to the repair of the subset of networked elements Ei and the probability of failure Pi of the subsets of networked elements Ei, and sorting the designated sets of items of equipment Ei in order of decreasing second value Fi.