초록 ▼

Surge conditions in the compressor of a gas turbine aeroengine can be automatically controlled by a surge control system in which compressor outlet pressure is monitored and a signal P corresponding to it is processed in a surge detector to determine the ratio P/P and to compare the value of the rat

Surge conditions in the compressor of a gas turbine aeroengine can be automatically controlled by a surge control system in which compressor outlet pressure is monitored and a signal P corresponding to it is processed in a surge detector to determine the ratio P/P and to compare the value of the ratio with a predetermined reference value, surge correction control signals being outputted whenever a surge is detected. Surge is controlled as these signals actuate various units linked with the surge detector, these units achieving bleeding off of air from the compressor, reduction of the mass flow of fuel to the aeroengine, and maintenance of fuel ignition for a predetermined period.

대표청구항 ▼

A method for automatically controlling compressor surge conditions in a gas turbine aeroengine, comprising in automatic sequence the steps of: (a) continuously monitoring the valve of the pressure at a predetermined location in the compressor; (b) detecting the onset of compressor surge conditions b

A method for automatically controlling compressor surge conditions in a gas turbine aeroengine, comprising in automatic sequence the steps of: (a) continuously monitoring the valve of the pressure at a predetermined location in the compressor; (b) detecting the onset of compressor surge conditions by detecting occasions when the ratio of the first derivative with respect to time of the monitored pressure to the monitored pressure itself is less than a predetermined reference value; and (c) initiating action to control the surge whenever the onset of surge conditions is detected.