Method and device for aiding the monitoring of a turbine engine of an aircraft

摘要

A method and device for aiding the monitoring of a turbine engine of an aircraft, which displays on one and the same indicator of a of a display indication elements illustrating as a percentage the engine start progression or the current sub-idle state of the turbine engine, a margin to a limit temperature of the turbine engine, a margin to a maximum temperature of the turbine engine and a margin to a possible failure of the start that is generated by a too low speed increase of the turbine engine.

主权项

1. A method for aiding the monitoring of a turbine engine of an aircraft while said turbine engine is in a sub-idle operating phase, according to which method the following operations are carried out automatically and repeatedly in real-time:
a) receiving current values for a rotational speed (N2) of a high-pressure module of the turbine engine and for a gas outlet temperature (EGT) from the turbine engine; b) calculating a first parameter indicating as a percentage a state of completion of a start or a current state of the sub-idle operating phase, wherein the calculation is based on at least the current value for the rotational speed (N2) of the high-pressure module of the turbine engine; c) calculating at least one second parameter indicating a margin to a temperature limit for the turbine engine, wherein the calculation is based on at least the current value for the gas outlet temperature (EGT) from the turbine engine; d) calculating at least one third parameter indicating a margin to a start failure due to an insufficiently quick acceleration, wherein the calculation is based on at least a time derivative of the current value for the rotational speed (N2) of the high-pressure module of the turbine engine; e) determining a correlation between said first and second parameters, and between said first and third parameters; and f) displaying a first indicating element, at least one second indicating element and at least one third indicating element on a same gauge of a display device, wherein the first indicating element represents the first parameter, the at least one second indicating element represents the second parameter, and the at least one third indicating element represents the third parameter, and adhere, among themselves, to the correlations determined in step e).