ADI EFIS

Use

ADI EFIS shows pitch, bank (roll) and yaw (magnetic heading) using an EFIS style ADI. In addition, the app shows "CHECK ATITUDE" whenever the pitch exceeds approximately 30 degrees from the horizon or 45 degrees of bank. The app is intended to be used as an educational tools for pilots.

If the compass heading or attitude appears incorrect, moving the device in a figure-8 pattern will help reestablish correct orientation.

Design

The app uses nine sensors to determine orientation of the device. The sensors are magnetometers, accelerometers and gyros, all aligned in the x, y and z direction. The sensor data is mathematically fused to calculate orientation. The orientation (measured as a quaternion) is flipped 90 degrees along the x-axis so the top of the device in a portrait mode is considered straight up. The resulting quaternion is converted to Euler angles to drive the EFIS display. But, that's probably more than you wanted to know.

Important!

Pilots, the app was not designed for use as an aircraft instrument. The data fusion algorithm was not designed or tested for use in an aircraft. During extended turns, rapid changes in g-loading or turbulence, the app might fail to provide reliable attitude information. Do not use this as source of attitude information onboard an aircraft. It will not save your life should you rely on it to fly with no outside visual references.

Privacy Policy

Here is a simple, easy to understand privacy policy. This app nevers collects or transmits any user data. Your privacy is important.