FAA Powerplant Written Practice Test

What is the primary purpose of compressor field cleaning on turbine engines?

1. To improve aesthetic appearance

2. To prevent fuel contamination

3. To prevent engine performance degradation

4. To enhance engine noise levels

The correct answer is: To prevent engine performance degradation

Compressor field cleaning is essential for maintaining the efficiency and performance of turbine engines. Over time, contaminants such as dirt, dust, and debris accumulate on the compressor blades. This buildup can disrupt the smooth airflow, leading to a phenomenon known as compressor degradation. When the efficiency of the compressor decreases, it can result in reduced thrust, increased fuel consumption, and overall diminished engine performance. By regularly performing compressor field cleaning, the engine's performance can be restored, ensuring optimal airflow and combustion processes. This maintenance practice is crucial for sustaining the engine's reliability and operational efficiency, which can have significant implications for safety and cost-effectiveness in aviation. While factors like aesthetic appearance, fuel contamination, or noise levels might be considerations in broader maintenance practices, they are not the primary objectives of compressor field cleaning. The focus is on preserving and enhancing engine performance, making the correct answer to this question the one highlighting performance degradation.