The high bypass gas turbine engine is the most common type of jet propulsion engine used in modern aircraft. It operates by using a series of rotating blades to compress and expand air, which is then mixed with fuel and ignited to create thrust. The main components of this type of engine are the fan, compressor, combustor, turbine, and exhaust nozzle. Each component has its own specific function that allows it to work together as an efficient system.

The fan is responsible for drawing in air from outside the aircraft and compressing it before sending it through the other components of the engine. This compressed air helps increase efficiency by increasing airflow throughout the entire system. Compression produces an increased pressure ratio which results in greater thrust power due to increased velocity at the exit end of the nozzle when compared to atmospheric pressure outside.