What is the aircraft engine surge
Aviation turbine engine performance to advanced, stable wide range of work, first of all need to surge margin to be large, the compressor operating point from the surge edge far.
The measure of engine surge performance is called "surge margin", that is, how much of the engine's inlet flow changes can cause a surge, which is generally required to reach 15% or more.
Surging is an abnormal working condition of the engine, which is caused by excessive air flow and compressor speed in the compressor.
Surge is a fatal failure of the engine, which can cause serious damage to the engine or even deadly engine.