AHRS used in airliner

MEMS Mini Attitude and Heading Reference System

Attitude director is used to display the airliner pitch Angle and roll Angle attitude attitude of electronic display instrument. Airliner flight instrument integrated display system mainly including attitude director, electronic channel compass, navigator and apparent JingYi etc modular instrumentation equipment, including electronic attitude director display information including attitude guide information, height information, speed information and working state information, etc. Its main task is to dynamic graphics and character in the form of real-time display flight parameters, so that the pilot accurate get what they need information, and timely safety control. Attitude director area filling operation is aimed at internal day the earth area, in order to intermediate boundary is the border of the horizon, upper blue area representative sky, lower brown area representative land, the horizon the position and Angle decided to two area shape, in every picture when set to have to generate graphics, above superposition character and line segment will follow the horizon rotated. The placement of the horizon and the Angle is made up of two flight parameters decision: pitching Angle and roll Angle. Pitching Angle θ decided to horizon from graphics center vertical distance h, roll Angle α decide the tilt Angle.

For the pitching Angle and roll Angle measurement usually adopt a twin-shaft Angle sensor to achieve, usually Angle sensor installed in hardness very good aircraft wing, when the aircraft in the take-off, Angle sensor can real-time the jet current take off the pitch angular measurement out, and may through digital or analog signal transmission to airliner flight instrument comprehensive display system. In the passenger normal flight, Angle sensor can real-time the jet current flight pitch Angle and roll Angle measurement out, and the Angle signal transmission to display system, make the captain or co-pilot can real-time understanding jet current flight attitude, greatly improving the airliner flight safety.