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Angle of attack indicator — Aviation Definition | Keynomen Aviation

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Angle of attack indicator

Plain English Meaning

A gauge that shows how steeply the wing is meeting the oncoming air, and warns the pilot when the wing is getting close to stalling.

Full Definition

A cockpit instrument that displays the angle between the wing's chord line and the relative wind, giving the pilot a direct indication of how close the wing is to its critical (stalling) angle of attack.

Context Anchor

Seen on aircraft equipped with angle of attack systems, especially during takeoff, approach, landing, and high-workload .

Angle of attack indicator

Derivation

The instrument is named for what it measures: the angle at which the wing 'attacks' (meets) the relative wind. The word 'attack' here comes from the French attaquer, meaning to engage or meet — not aggression, just contact between wing and air.

Why Pilots Care

It helps avoid stalls and maintain efficient wing performance by showing the wing's operating angle in real time.

Analogy

Hold your hand flat out of a car window and slowly tilt the front edge upward. The more you tilt it into the air, the greater the angle at which your hand meets the airflow. An angle of attack indicator shows that kind of meeting angle for the wing.

Intuition Check

Do not read “attack” as aggression or a sudden maneuver. Here it means the angle at which the wing meets the airflow.

Example Sentence 1

During the steep turn, the pilot scanned the angle of attack indicator to make sure the wing stayed well below its stalling angle.

Example Sentence 2

On short-field takeoff the angle of attack indicator helped confirm the best climb attitude after liftoff.