Method for detecting a failure of a first turbine engine of a twin-engine helicopter and for operating the second turbine engine, and corresponding device

摘要

The invention relates to a method for detecting a malfunction in a first turboshaft engine, referred to as an inoperative engine (4), of a twin-engine helicopter, and for controlling a second turboshaft engine, referred to as a healthy engine (5), each engine (4, 5) comprising protective stops regulated by a regulation device which define a maximum power regime, characterised in that it comprises: a step (10) of detecting an indication of failure of said inoperative engine (4); a step (11) of modifying said protective stops of said healthy engine (5) into protective stops which correspond to a maximum power single-engine regime, in the case of the detected indication of failure; a step (12) of confirming a failure of said inoperative engine (4); a step (13) of controlling an increase in the flow rate of fuel supply of said healthy engine (5), in the event of a confirmed failure.

主权项

1. A method for detecting a malfunction in a first turboshaft engine, referred to as an inoperative engine, of a twin-engine helicopter having a rotary wing, and for controlling a second turboshaft engine, referred to as a healthy engine, each engine comprising protective stops regulated by a regulation device which define a maximum power regime, comprising:
a step of detecting an indication of failure of said inoperative engine, a step of modifying said protective stops of said healthy engine into protective stops which correspond to a maximum power single-engine regime, in the case of the detected indication of failure, a step of confirming a failure of said inoperative engine, a step of controlling an immediate increase in the flow rate of fuel supply of said healthy engine, in the event of a confirmed failure, so as to allow an acceleration of the healthy engine without waiting for an automatic regulation of the healthy engine after a fall in speed of said rotary wing resulting from the failure of the inoperative engine.