Patent ID: 9587834
Date: 2017-03-07
CPC Classifications: F02C,F05D,F23D,F23N,F23R,G01M,G01N

Claim:
1. A combustor for a gas turbine engine, said combustor comprising: a fuel injection system for injecting fuel into the combustor; a combustion monitoring and control system for monitoring and controlling the injection of the fuel into the combustor; a combustion basket responsive to the fuel from the fuel injection system and air, said fuel and air being mixed and combusted in the combustion basket to generate a hot working gas; and a distributed sensing system including at least one fiber optic cable and an analyzer, the analyzer including a swept wavelength interferometer having an optical reference path of a known length, said analyzer providing an optical signal propagating down the fiber optic cable and receiving a Rayleigh backscattering spectrum therefrom, said analyzer providing temperature monitoring along the length of the fiber cable using the Rayleigh backscattering spectrum to determine whether a flame flashback condition is occurring in the combustor, and wherein the analyzer provides a control signal to the combustion monitoring and control system to control the injection of the fuel if the flame flashback condition is detected.