The rear and front spinner cones play multiple roles in aircraft engines.
On the one hand, they ensure that the airflow enters the air duct at a suitable angle, on the other hand, they have a protective function during operation. Spinner cones act as a shield against foreign objects and debris to protect the more sensitive internal modules of the engine, preventing damage during flight.
As a result of the parts facing thousands of small and large impacts hitting during operation, maximum quality control and perfect cleaning are essential for these parts.