Air data inertial reference unit

<p>An Air Data Inertial Reference Unit (ADIRU) is a key component of the integrated Air Data Inertial Reference System (ADIRS), which supplies air data (<a href="/facts/Airspeed/BbJIjqSs">airspeed</a>, <a href="/facts/Angle_of_attack/v5NkMgqu">angle of attack</a> and <a href="/facts/Altitude/B5eNVurK">altitude</a>) and <a href="/facts/Inertial_navigation_system/UzUTMhK2">inertial reference</a> (position and altitude) information to the pilots' <a href="/facts/Electronic_flight_instrument_system/aBeQzXtN">electronic flight instrument system</a> displays as well as other systems on the aircraft such as the engines, <a href="/facts/Autopilot/cypCha01">autopilot</a>, <a href="/facts/Aircraft_flight_control_system/4uBmYcHf">aircraft flight control system</a> and landing gear systems. An ADIRU acts as a single, <a href="/facts/Fault-tolerant_design/rasrYlJk">fault tolerant</a> source of navigational data for both pilots of an aircraft. It may be complemented by a secondary attitude air data reference unit (SAARU), as in the <a href="/facts/Boeing_777/kpFr085L">Boeing 777</a> design.
</p><p>This device is used on various <a href="/facts/Military_aircraft/hG80LP2F">military aircraft</a> as well as civilian <a href="/facts/Airliner/mhhg0xRy">airliners</a> starting with the <a href="/facts/Airbus_A320/tT68Vwuq">Airbus A320</a> and <a href="/facts/Boeing_777/kpFr085L">Boeing 777</a>.
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Air data inertial reference unit open-in-new

Air data inertial reference unit