What is an impellar and diffuser in a jet engine?

Answer 1

In a jet engine, an impeller is a rotating component that increases the pressure and velocity of the air entering the engine, typically found in turbojet and turbofan designs. The diffuser, located downstream of the impeller, slows down the high-velocity air and converts kinetic energy into pressure, preparing the airflow for the combustion process. Together, these components enhance the efficiency of airflow through the engine, contributing to improved thrust and performance.