What is the function of the throttle in an aircraft?

The throttle in an aircraft is crucial for controlling the engine's power output, which directly affects the aircraft's performance. When the pilot adjusts the throttle, they are increasing or decreasing the amount of fuel and air that enters the engine, thereby adjusting the thrust produced. This process is essential for various phases of flight, including takeoff, climbing, cruising, and descending.

While managing fuel consumption is a related aspect of throttle use, it is more accurate to say that the primary function of the throttle is to control engine power output. In other areas, such as altitude adjustment and navigation, other systems and controls come into play that are not directly related to the throttle's main function.