An angle of attack indicator offers a visual indication of the amount of lift the wing is generating at a given airspeed or angle of bank. The AOA delivers critical information visually or through an aural tone to indicate the actual safety margin above an aerodynamic stall.
How It Works: Angle of Attack Indicator
Key Takeaways:
- An Angle of Attack (AOA) indicator provides pilots with a critical visual or aural indication of the wing's lift, communicating the safety margin above an aerodynamic stall.
- AOA systems are primarily offered as Lift Reserve Indicators (accurate in one configuration) or Normalized AOAs (accurate in all configurations), with the latter being the more advanced type used in modern jets like the Airbus A380 and Dassault Falcon.
- The system consists of a heated wing probe that measures differential pressure, an air-data computer to process this information, and a cockpit indicator that uses a color-coded bar display (green, yellow, red) to intuitively show the angle of attack and proximity to a stall.
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