What percentage of air enters the engine through the low-pressure and high-pressure compressors in the CFM56-7B engine?

In the CFM56-7B engine, the air entering the engine is divided between the low-pressure and high-pressure compressors as part of the overall airflow management. Typically, approximately 20% of the total air entering the engine is directed through the core, specifically involving the high-pressure compressor, while the remaining air bypasses the core through the fan, which is part of the low-pressure system.

This airflow structure allows the engine to optimize its performance, combining the bypass flow from the fan with the refined output from the compressors for efficient thrust generation. The division of airflow is critical for maintaining the balance between thrust and fuel efficiency, which are essential for commercial aviation operations.

Understanding this airflow distribution is vital for grasping the operational principles behind jet engine design and performance, as it directly affects efficiency and thrust characteristics, particularly in modern turbofan engines like the CFM56-7B.