Magnetometers

In the context of aviation, magnetometers are devices used to measure the strength and direction of the magnetic field in the vicinity of the aircraft. They are an integral part of the aircraft's navigation system, specifically the Attitude and Heading Reference System (AHRS). The magnetometer provides data about the Earth's magnetic field which is then used to calculate the aircraft's heading relative to magnetic north. This is crucial for navigation and control of the aircraft, especially in conditions where visual references are not available, such as in clouds or at night. The magnetometer is typically located in a part of the aircraft that is free from magnetic interference, often in the wingtip or tail. It is important to note that magnetometers in aviation are sensitive to magnetic anomalies and interference, which can come from various sources such as the aircraft's electrical systems, metal structures, or even geological formations on the ground. Therefore, regular calibration and checks are necessary to ensure accurate readings.