angle of attack

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Related to Alpha limiter: Critical angle of attack, effective angle of attack, angle of attack indicator, Relative wind

angle of attack

[′aŋ·gəl əv ə′tak]
(aerospace engineering)
The angle between a reference line which is fixed with respect to an airframe (usually the longitudinal axis) and the direction of movement of the body.
(mining engineering)
The angle in a mine fan made by the direction of air approach and the chord of the aerofoil section.

Angle of Attack

 

the angle between the direction of trans-lational motion of a body and some characteristic direction on the body. The characteristic direction may be, for example, a chord of an airplane wing or the axis of symmetry of a projectile or a rocket.

angle of attack

angle of attackclick for a larger image
Angle of attack is the angle between the wing chord plane and the relative air flow.
The acute angle between the chord line and the relative airflow. Often referred to as an angle of incidence—which it is not. The angle of attack should not be confused with the pitch angle or attitude of aircraft, which are angles relative to the horizontal while the angle of attack is in respect to the relative airflow. It is referred to also as alpha (α).