What is a compressor stall?

A compressor stall occurs when there is an imbalance between the airflow supply and the demand within a jet engine's compressor. This imbalance can lead to a situation where the airflow through the compressor is disrupted or becomes insufficient to sustain the engine's operation at a given power setting. Typically, this phenomenon is characterized by a loss of efficiency and performance, as the airflow necessary for combustion and efficient turbine function is not met.

In more technical terms, when the angle of attack of the air approaching the compressor blades exceeds a critical point, the airflow can separate from the blades, causing a stall. This situation may result in fluctuating engine parameters, such as decreased thrust, strange noises, or vibrations, which could potentially lead to more serious engine issues if not addressed. Understanding compressor stalls is crucial for aviation safety, performance management, and troubleshooting in jet engine operations.