Which control is used to adjust the engine's power?

The throttle is the primary control used to adjust the engine's power in an aircraft. It regulates the fuel flow to the engine, which in turn affects the engine's output and the aircraft's performance. When the throttle is pushed forward, more power is delivered to the engine, allowing for increased speed and climb rate. Conversely, pulling the throttle back decreases engine power, which can be useful for descending, slowing down, or reducing airspeed during approaches and landings.

In aviation, understanding the role of the throttle is crucial, as managing engine power effectively directly impacts flight dynamics, including climb rate, descent rate, and overall aircraft control. While other controls like the joystick, rudder pedals, and elevator are essential for maneuvering the aircraft, they do not directly influence engine power; instead, they assist in controlling the aircraft's direction and altitude once power has been set.