190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 30-40
AOA is the angle between the aircraft's wing and the oncoming airflow (see Figure 30-8). As AOA
increases, eventually it will reach a critical value (determined by the physical characteristics of the wing),
whereupon the airflow will separate, the wing will stop producing lift, and the aircraft will stall. The
critical value can vary with flap position, to compensate for this the AOA system can be calibrated twice,
once with the flaps fully retracted, and once with the flaps fully deployed. The primary purpose of an AOA
system is to monitor the wing's angle of attack and provide feedback to the pilot when the aircraft is
approaching the critical AOA.
Figure 30-8 Angle of Attack (AOA) Illustration
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