FAA Powerplant Written Practice Test

What is the primary reason for cleaning the compressor field on turbine engines?

1. To enhance aesthetic appearance

2. To prevent engine performance degradation

3. To comply with regulatory standards

4. To reduce engine noise

The correct answer is: To prevent engine performance degradation

The primary reason for cleaning the compressor field on turbine engines is to prevent engine performance degradation. Over time, contaminants such as dirt, dust, and debris can accumulate on the compressor blades, which negatively affects their ability to efficiently compress air. When the compressor's performance is compromised due to these deposits, it can lead to a range of issues, including decreased engine efficiency, reduced thrust, and higher specific fuel consumption. By regularly cleaning the compressor, the engine can maintain optimal airflow and performance levels, ensuring that it operates effectively and within its design parameters. This maintenance practice ultimately contributes to the overall reliability and longevity of the engine, making it crucial for safe and efficient operation.