Patent ID: 6067032
Filing Date: 2000-05-23
Classification: F04D

Abstract:
A method for determining when to activate an engine stall warning alarm, said method comprisingproviding a gas turbine engine having an engine control for operating said engine, a gas generator burner, an exhaust nozzle in spaced relation to said gas generator burner, a turbine section disposed between said gas generator burner and said exhaust nozzle, a pressure sensor that senses pressure in said gas generator burner and sends a first stream of data to said control, and an ultraviolet light detector that senses intensity of ultraviolet light at a location between said turbine section and said exhaust nozzle and sends a second stream of data to said control,monitoring said first stream of data and said second stream of data during engine operation,identifying if said first stream of data indicates that an engine stall has occurred,identifying if said second stream of data indicates that an engine stall has occurred,activating said stall warning alarm only if both said first and second streams of data indicate that an engine stall has occurred.