NON-OPTICAL FLAME DETECTOR AND METHOD

A method of detecting flame state of a combustor of a turbine engine includes determining at least one of a first derivative and a second derivative of a compressor discharge pressure (40) of a compressor of the turbine engine; determining at least one of a first derivative and a second derivative of a gas turbine exhaust gas temperature (30) of the exhaust gases (70) output by the turbine engine; determining at least one of a first derivative and a second derivative of a gas turbine shaft/rotor speed of the turbine engine; determining at least one of a first derivative and a second derivative of combustor dynamic pressure monitoring; and determining a flame state of a combustor of the turbine engine based on the combustor dynamic pressure monitoring, the determined derivatives of the combustion dynamics, compressor discharge pressure (40), gas turbine shaft/rotor speed, and gas turbine exhaust gas temperature (30) of the exhaust gases (70).