How many instruments are controlled by gyroscopes?

Gyroscopes play a crucial role in aviation by providing stability and orientation for various instruments in an aircraft. The correct choice indicates that there are three primary instruments typically controlled by gyroscopes: the attitude indicator, the heading indicator, and the turn coordinator.

The attitude indicator displays the aircraft's orientation relative to the horizon, essential for maintaining level flight. The heading indicator provides the aircraft's current heading and relies on gyroscopic stability to maintain accuracy. Lastly, the turn coordinator indicates the rate of turn and coordination during maneuvers, utilizing gyroscopic precession to reflect the aircraft’s movements accurately.

Each of these instruments is vital for piloting and navigation, especially in conditions where visual references are compromised, such as in clouds or at night. Understanding the role of gyroscopes in these instruments highlights their importance in ensuring aircraft safety and effective navigation.