Air data inertial reference unit

Okay kiddo, an Air Data Inertial Reference Unit or ADIRU is like a computer inside an airplane that helps the pilots figure out where the plane is, how it's moving, and what direction it's going in.

To do this, the ADIRU has a bunch of sensors that constantly measure things like the plane's speed, altitude, and how it's turning.

These sensors are really sensitive and can tell the ADIRU exactly how the plane is moving even if it's really windy or there's turbulence.

The ADIRU then uses all this information to create a map of the plane's flight path and figure out how to get to its destination. It's kind of like a GPS for airplanes, but it also helps the pilots control the plane while they're up in the air.

So, the ADIRU is really important for keeping airplanes safe and on track during flights.