Abstract: A system including a module for collecting vibration signals, a module for filtering the signals, a module for verifying whether the signals preserved by the filtering module correspond to signals representative of a set of flight conditions of the aircraft that are listed in a reference database, a module for identifying sources of vibration, a module for requesting a maneuver to be carried out by a pilot depending on the identified sources of vibration, a module for deciding, using a predefined decision tree, whether the preceding modules should be implemented again, and a module for transmitting a vibration report to a user device. The system allows assistance to be given, to the pilot, with the generation of a vibration report, and assistance to be given with maintenance of the aircraft.

Abstract: A system including a module for collecting vibration signals, a module for filtering the signals, a module for verifying whether the signals preserved by the filtering module correspond to signals representative of a set of flight conditions of the aircraft that are listed in a reference database, a module for identifying sources of vibration, a module for requesting a maneuver to be carried out by a pilot depending on the identified sources of vibration, a module for deciding, using a predefined decision tree, whether the preceding modules should be implemented again, and a module for transmitting a vibration report to a user device. The system allows assistance to be given, to the pilot, with the generation of a vibration report, and assistance to be given with maintenance of the aircraft.

Abstract: A method for predicting dynamic behavior of an aircraft structure, the aircraft including at least one rotary device including at least one rotor guided in rotation by at least one fixed-bracket bearing containing a shock-absorbing fluid film. The method includes using a global digital model of the aircraft structure including a basic digital model of each rotary device, generating a non-linear digital model of each shock-absorbing film (for example by developing a cavitation-free model and a model with cavitation), integrating the model of each shock-absorbing film with the global model, applying interference to at least one rotor of a rotary device, and calculating the vibration frequency of at least one rotor of each rotary device and the corresponding frequency of the vibrations generated in a critical portion of the aircraft structure.