How is a compressor stall related to compressor surge?

How is a compressor stall related to compressor surge?

Compressor stall. A compressor stall is a local disruption of the airflow in a gas turbine or turbocharger compressor. It is related to compressor surge which is a complete disruption of the flow through the compressor.

What causes a compressor stall on a Sukhoi MiG-27?

Hot gases from gun firing which may produce inlet distortion; e.g., Mikoyan MiG-27. Sukhoi Su-57 prototype suffering a compressor stall at MAKS 2011. Compressor axially-symmetric stalls, or compressor surges, are immediately identifiable, because they produce one or more extremely loud bangs from the engine.

What causes engine to stall at low forward speed?

Turbulent or hot airflow into the engine intake, e.g., use of reverse thrust at low forward speed, resulting in re-ingestion of hot turbulent air or, for military aircraft, ingestion of hot exhaust gases from missile firing. Hot gases from gun firing which may produce inlet distortion; e.g., Mikoyan MiG-27.

What causes a compressor to stall in the airfoil?

A rotational stall may be momentary, resulting from an external disturbance, or may be steady as the compressor finds a working equilibrium between stalled and unstalled areas. Local stalls substantially reduce the efficiency of the compressor and increase the structural loads on the airfoils encountering stall cells in the region affected.

What are the symptoms of an engine stall?

Here are some of the most common symptoms of, a faulty mass airflow (MAF) sensor; The engine is very hard to start or turn over. Engine stalling shortly after starting. The engine hesitates or drags while under load or idle. Hesitation and jerking during acceleration.

Why does my car stall when I start the car?

Engine stalling problems can be caused by, almost anything but, are usually sensor related. A cold engine needs a fairly rich fuel mixture to start, and to idle smoothly while it warms up. What do you look for when the car starts to shake and sputter eventually causing engine stalling.

What causes an engine to stall in cold weather?

Engine stalling problems can be hard to find and are often sensor or temperature related. Engine stalling is more likely to occur during cold weather or when starting a cold engine. So, this kind of engine stalling problem often means the engine is not getting enough fuel and/or too much air.

What causes a car engine to start surging?

Vacuum Leaks. Vacuum leaks can cause surging on some engines, but it depends on the type of fuel injection system. The MAF (mass air flow) systems used on many cars measure the amount of air flowing through the engine’s throttle valve (throttle body) and use that information to determine how much fuel to inject.