critical angle of attack


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critical angle of attack

[′krid·ə·kəl ¦aŋ·gəl əv ə′tak]
(aerospace engineering)
The angle of attack of an airfoil at which the flow of air about the airfoil changes abruptly so that lift is sharply reduced and drag is sharply increased. Also known as stalling angle of attack.
References in periodicals archive ?
Changes to the airplane's aerodynamics usually will include lowering its critical angle of attack, beyond which a stall results.
If you feel shaking through the seat of your pants, the problem is probably the wing--as redesigned by ice--ap-proaching its critical angle of attack.
There is also an audible "Geiger counter" clicking heard through the headset that increases in speed the closer the SCx shows to the critical angle of attack.
cr] is a critical angle of attack that is characterised by sharp changes in the pressure profile on the blade back, [i.
The degree of stability of the lift curve near the critical angle of attack (lift-curve peak form) is known to be the function of the leading edge radius as discussed in the reference [18].
In high performance aircraft with angle of attack/lift sensors like the King Air 200, Garmin ESP offers low airspeed or stall protection that reduces the probability of stalling the aircraft by providing a gentle pitch-down control force through the control yoke when the aircraft's wing approaches its critical angle of attack.
Did the pilot exceed the airplane's critical angle of attack, stall and lose control?
Bottom line is that if there's ice on the wing, you're flying with an airfoil where no one knows the stall speed or, more correctly, the critical angle of attack.
In high-performance aircraft with angle of attack/lift sensors, Garmin ESP offers low airspeed or stall protection that reduces the probability of stalling the aircraft by providing a gentle pitch-down control force through the control yoke when the aircraft's wing approaches its critical angle of attack.
As the wing approaches its critical angle of attack, the point where laminar flow separates from turbulent flow moves forward along with the center of pressure (the focal point of lift).
The NTSB determined the probable cause(s) of this accident to include: "The pilot's failure to maintain adequate airspeed following a partial loss of engine power during initial climb, which led to the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall.
In extreme cases, deflection can take the wing right through its critical angle of attack, cause a stall and then a spin.

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