angle of attack


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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 ?
77 % more than the required length of the exchanger having inline rectangular wings at an angle of attack of 26[degrees].
L] changed with the thumb position at angles of attack of 0[degrees] and 45[degrees], although at an angle of attack of 90[degrees] the values of the different thumb positions were identical.
7% over the light WT rotor for the same angle of attack and guide angles.
opt] (15) /* Adjust the angle of attack */ (16) while [alpha] - [[alpha].
Since the separation of the HGV at the verge of a dense atmosphere, some scholars argue that the rocket should also meet the terminal angle of attack constraint [[alpha].
With increased angle of attack and an ice buildup on the leading edge, the flow separation on the underside of the tail, the lifting part, is worse, and the area of disturbed air, gets bigger and moves aft.
The visor that Angle Of Attack wore for the first time remains in place, and the vast majority of today's opposition can be discounted judging on recent form.
2006), show that squeal sound pressure amplitudes emitted by undamped wheels increase in direct proportion to the rolling speed and to the angle of attack, and curve squeal disappears when the wheel flange is in contact with the rail.
The angular acceleration, angular velocity of attack and the angle of attack for the distal part of the fin;
This designation allowed us to fly approximately nine hours and finish out the original project objectives in three flights,'' said Joe Flores, the squadron's Taiwan High Angle of Attack program manager.