What is the primary purpose of aircraft engines?

The primary purpose of aircraft engines is to generate thrust, which is essential for movement and flight. Thrust is the force that propels an aircraft forward, overcoming drag and allowing it to ascend or maintain altitude. Aircraft engines achieve this by converting fuel into mechanical energy, which then drives propellers or jet turbines, depending on the type of engine used.

While navigational capabilities, management of onboard systems, and controlling external communications are important functions within an aircraft, they are not the primary roles of the engine. The engine's fundamental task is to provide the necessary propulsion that enables an aircraft to take off, fly, and land, making it a critical component of any aircraft's operation.