attitude-heading reference system

attitude-heading reference system (AHRS)

A sensor-deriving aircraft attitude and heading information from various gyroscopes and accelerometers.
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The PFD uses a solid-state attitude-heading reference system (AHRS), which is much more resilient to unusual attitudes., in addition, the HSI shows you turning right, and the VSI shows a descent, which correlates to the attitude shown on the PFD.
In the design of the 3DM-GX3-25, MicroStrain's lightest and smallest attitude-heading reference system, the triaxial accelerometer, triaxial gyro, and triaxial magnetometer are combined with the temperature sensors and run through a sophisticated sensor fusion algorithm by the on-board processor.
The Perspective upgrades result in an airplane with: Dual AHRSs: No longer does everything hinge on a single-point failure of the attitude-heading reference system (AHRS, the "brains" behind glass-cockpit flight data displays).
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