METHOD FOR PROTECTING A GAS TURBINE ENGINE FROM MULTIPLE COMPRESSOR SURGINGS Russian patent published in 2018 - IPC F04D27/02 

FIELD: motors and pumps.

SUBSTANCE: invention relates to the field of ensuring the safety of a flight of an aircraft with a gas turbine engine (GTE) by stopping multiple compressor surging, characterized by strong low-frequency oscillations of flow parameters in the flow part and vibrations of engine elements. In this method, the maximum permissible number of surging N^threshold is also set for a predetermined time interval Δτ, determine the number of generated signals "Surge" N for a predetermined time interval Δτ, in this case, if the number of generated “Surge” signals N exceeds N^threshold, produce automatic cessation of fuel supply to the engine. In addition, the numerical value of the parameter N^threshold is additionally used, equal to at least 3, and the duration of a predetermined time interval Δτ=5…10.

EFFECT: technical result of the invention increase flight safety due to automatic shutdown of the engine with multiple compressor surges for a predetermined time interval Δτ.

1 cl, 1 dwg