angle of attack


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Related to angle of attack: angle of attack indicator, Critical angle of attack

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).
References in periodicals archive ?
The velocity of the angle of attack in the distal part of the fin in the upbeat and the downbeat.
The detection of the angle of attack is based upon a noise spectrum analysis in the wheel-rail contact and the use of GPRS and GPS technologies.
The experiment showed that the size of the area of uncertainty is not fixed and varies depending on the angle of attack of the aircraft wing (Fig.
Reporting in the June 14 SCIENCE, they confirmed that rapid changes in a dragonfly wing's speed and angle of attack do indeed generate vortices and unsteady flows.
Scraping blades imitate the action of a hand held knife, changing their angle of attack as the direction of rotation alters.
Giles remodelled his action at the end of the summer, straightening his run-up in an attempt to narrow his angle of attack, following a barren spell at the top level - in eight previous Tests this year he had taken only 10 wickets at 68 apiece.
They occur where the building encounters the site's maximum legal envelope--a limit that also dictated the steep angle of attack.
Angle of attack is the angle between the airflow far in front of the airfoil and the line connecting the leading edge of the airfoil to the training edge.
Laser sensors can also measure on slopes without loss of data or the necessity to reposition the angle of attack.
L] presented the maximum values at an angle of attack of 45[degrees] ([C.
These very high, random and incorrect values of the angle of attack led to the flight control computers commanding a nose-down aircraft movement, which resulted in the aircraft pitching down to a maximum of about 8.