Avionics method and device for monitoring a turbomachine at startup

摘要

A method of characterizing a turbine engine, the method comprising:
steps of using measurements from an accelerometer monitoring a particular turbine engine while it is starting to detect the energy released by any contact during said starting between the rotor and the stator of the turbine engine, and of associating any such detection of contact with thermodynamic data measured on the particular turbine engine; and thena recognition training step, based on the associations, to enable a thermal context of the turbine engine to be used to recognize the presence of a rotor thermal unbalance to be taken into account in order to avoid contacts between the rotor and the stator on starting.

主权项

1. A method of characterizing a turbine engine, the method comprising:
measuring, using an accelerometer monitoring the turbine engine during starting, data to detect energy detected by any contact during said starting between a rotor and a stator of the turbine engine; measuring, using sensors, thermodynamic data on the turbine engine; creating a database associating detection of contact with the measured thermodynamic data; determining a thermal unbalance value based on the measured vibrations; and determining, based on a model and the database, a presence of a rotor thermal unbalance by associating the thermal unbalance value with the thermodynamic data, in order to avoid contacts between the rotor and the stator on starting.