Apparatus and method of operating a gas turbine engine

摘要

A gas turbine engine and an apparatus for operating the gas turbine engine includes at least one microphone to detect the sound of impacts of particles, a recorder to record the sound of the impacts, an analyzer to analyze the sound of the impacts of the particles, and a store of sounds of impacts, the stored sounds of impacts correspond to unfavorable weather conditions. A comparator compares the sound of the impacts of particles with one or more sounds of impacts stored in the store 68 sounds of impacts and if the comparator determines that the sound of the impacts of particles matches one or more stored sounds of impacts, a signal is sent to a control system for the gas turbine engine to adjust the operation of the gas turbine engine such that it operates in a safe mode of operation.

主权项

1. A method of operating a gas turbine engine, the gas turbine engine having a combustor, a control system, variable compressor vanes, at least one compressor bleed valve, a shaft and an anti-icing device, the method comprising:
detecting impacts of particles on a surface of the gas turbine engine or a surface of an associated aircraft; recording the impacts; comparing the impacts of the particles with one or more stored impacts; wherein the one or more stored impacts correspond to unfavorable weather conditions; and the one or more stored impacts correspond to one or more impacts of rain drops, hail stones, ice particles or ice crystals; determining if the impacts of the particles matches the one or more stored impacts; and sending a signal to the control system for the gas turbine engine to adjust at least one of a position of the variable compressor vanes, a position of the at least one compressor bleed valve, a speed of rotation of the shaft, or to provide anti-icing, in order to provide sufficient surge margin for a compressor, to prevent combustor flame out, to prevent damage to compressor rotor blades, or to prevent damage to compressor stator vanes, respectively, such that the gas turbine engine operates in a safe mode of operation when it is determined that the impacts of the particles matches the one or more stored impacts.