What could indicate a compressor stall condition in a turbine engine?

What could indicate a compressor stall condition in a turbine engine?

• A. Increased RPM and lower temperature readings
• B. Vibrations at a constant speed
• C. Lower torque and explosive sounds
• D. Steady engine performance

Answer: (C)

A compressor stall condition in a turbine engine is often characterized by specific signs that indicate a disruption in airflow through the engine's compressor section. One of the key indicators is lower torque accompanied by unusual sounds, which could be described as explosive or popping noises. These sounds typically result from intermittent or disrupted combustion, often seen when the airflow is insufficient to maintain stable combustion, leading to a stall. The presence of lower torque suggests that the engine is not producing the expected power output, which aligns with the condition of a compressor stall. Such stalls can happen due to various factors, including abrupt throttle movements, sudden altitude changes, or obstructions in airflow, which ultimately affect engine performance. Other options, while they may appear to describe engine behavior, do not accurately reflect the symptoms of a compressor stall. Increased RPM and lower temperature readings could imply a healthy engine performing well, while vibrations at a constant speed may result from issues, but they do not specifically indicate a stall. Steady engine performance would suggest that the engine is functioning correctly without any signs of dying or stalling. Therefore, the correlation of lower torque and explosive sounds provides a clear indication of a compressor stall condition in a turbine engine.

A compressor stall condition in a turbine engine is often characterized by specific signs that indicate a disruption in airflow through the engine's compressor section. One of the key indicators is lower torque accompanied by unusual sounds, which could be described as explosive or popping noises. These sounds typically result from intermittent or disrupted combustion, often seen when the airflow is insufficient to maintain stable combustion, leading to a stall.

The presence of lower torque suggests that the engine is not producing the expected power output, which aligns with the condition of a compressor stall. Such stalls can happen due to various factors, including abrupt throttle movements, sudden altitude changes, or obstructions in airflow, which ultimately affect engine performance.

Other options, while they may appear to describe engine behavior, do not accurately reflect the symptoms of a compressor stall. Increased RPM and lower temperature readings could imply a healthy engine performing well, while vibrations at a constant speed may result from issues, but they do not specifically indicate a stall. Steady engine performance would suggest that the engine is functioning correctly without any signs of dying or stalling. Therefore, the correlation of lower torque and explosive sounds provides a clear indication of a compressor stall condition in a turbine engine.