AHRSjärjestelmä

AHRSjärjestelmä, which stands for Attitude and Heading Reference System, is an electronic device used in aircraft to display their attitude and heading information to the pilot. It typically consists of sensors such as accelerometers, gyroscopes, and magnetometers. These sensors measure the aircraft's motion and orientation relative to the Earth's gravitational field and magnetic north. The data collected by these sensors is processed by a computer, which then provides outputs that can be displayed on various instruments, often including the primary flight display (PFD).

The AHRSjärjestelmä replaces older mechanical gyroscopic instruments, offering greater accuracy, reliability, and reduced maintenance requirements. It can provide continuous and stable attitude information, even during significant aircraft maneuvers. Modern AHRSjärjestelmäs are crucial components of glass cockpits, integrating with other avionics systems to present a comprehensive situational awareness picture to the flight crew. They are essential for safe flight operations, particularly in Instrument Meteorological Conditions (IMC) where visual references are absent. The system's ability to detect and correct for errors caused by aircraft movement is a key advantage over traditional mechanical gyros.