Angle of Attack: Meaning, Synonyms, Antonyms and Use Cases

Angle of attack

Angle of attack / (noun) / (ˈæŋgəl, əˈtæk) /

  • Angle of attack is the angle at which the relative wind meets the wing’s chord line.
  • Angle of attack is also defined as the angle between the body’s reference line and the oncoming flow.

 

Angle of Attack In Aviation

We define the angle of attack of an aircraft as the angle at which relative wind meets an airfoil.

It is the angle formed by the Chord of the airfoil and the direction of the relative wind or the vector representing the relative motion between the aircraft and the atmosphere.

An increase in the angle of attack of an aircraft can bring an increase in both lifts and induce drag up to a particular point.

When the angle of attack and the airflow becomes too high, the upper surface of the airfoil becomes detached which will cause a loss of lift or stall.

 

Synonyms: incidence angle, angledozer, angle dug, angle of incidence, angle iron, angle of advance, angle of anomaly, angle of bank, angle of climb, angle of convergence, angle of depression, angle of deviation.

 

Antonyms: oblique angle, right angle, reentrant angle, disadvantage, deficit, increase, raise.

 

Translation

Latin – angulus impetus

Spanish – ángulo de ataque

French – angle d’attaque

Chiness – 攻角 (Gōng jiǎo)

Use cases

  • The pilot is to stay with the planeurs while they searched for the winds and `the right angle of attack.
  • James checked his airspeed, lineup, and angle of attack, and descended steadily toward the flight deck.
  • He also pointed out the existence of an effective angle of attack, despite the presence of the logarithmic singularity.
  • Another feature differing from figure 7 is the noticeably higher eddy pressure level as indicated by -uc, and its variation with the angle of attack for these two cases.

Frequently asked questions

What is angle of attack used for?

In aerodynamics, the angle of attack specifies the angle between the chord line of the wing of a fixed-wing aircraft and the vector representing the relative motion between the aircraft and the atmosphere.

What is the normal angle of attack?

Depending on the speed, flight altitude, and g-load of maneuver, an aircraft flies at an angle of attack range of about 2 – 5 degrees. But increases to about 10 -12 degrees when flight speed is near landing speed and take-off.

In aerodynamics, we see the angle of attack as the angle at which the wing of an aircraft meets the oncoming air, while Pitch is the angle of the plane toward the oncoming air. 

Summary

Angle of attack stands as one of the most fundamental concepts in aviation and aerodynamics. It is still the angle formed between the wing and the relative wind. At first glance, it would appear to be identical to the “deck angle” that airline pilots used to describe how high the airplane is pitched up.
The chord line is what we call an imaginary line that runs between the leading edge and the trailing edge of a wing. The relative wind is the airflow that moves equal to and opposite the airplane’s flight path.

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