How does the autothrottle system work during cruise?

The autothrottle system during cruise is designed specifically to maintain constant throttle settings to ensure optimal performance and fuel efficiency. By utilizing the autothrottle, the aircraft can automatically adjust engine thrust to maintain a desired airspeed, taking into account factors such as aircraft weight, altitude, and atmospheric conditions. This makes it easier for pilots to focus on other aspects of flight management while ensuring that the aircraft remains in its intended flight envelope.

In cruise, the autothrottle continuously monitors airspeed and makes adjustments as necessary to keep the aircraft flying efficiently. This is particularly important as air density changes with altitude, as well as in varying wind conditions. The system's ability to adjust thrust automatically helps maintain a steady speed, which is crucial for efficient fuel consumption and overall flight stability.