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Wingtip vortices are circular patterns of rotating air left behind a wing as it generates lift. [1]: 5.14 The name is a misnomer because the cores of the vortices are slightly inboard of the wing tips. [2]: 369 Wingtip vortices are sometimes named trailing or lift-induced vortices because they also occur at points other than at the wing tips.
A three-to-five-knot (3–6 mph; 6–9 km/h) crosswind will tend to keep the upwind side of the wake in the runway area and may cause the downwind side to drift toward another runway. Since the wingtip vortices exist at the outer edge of an airplane's wake, this can be dangerous. [7]: 10
In aerodynamics, the Crow instability, or V.C.I. vortex crow instability, is an inviscid line-vortex instability, named after its discoverer S. C. Crow. The effect of the Crow instability can often be observed in the skies behind large aircraft, when the wingtip vortices interact with contrails from the engines, producing visible distortions in ...
Lift-induced drag, induced drag, vortex drag, or sometimes drag due to lift, in aerodynamics, is an aerodynamic drag force that occurs whenever a moving object redirects the airflow coming at it. This drag force occurs in airplanes due to wings or a lifting body redirecting air to cause lift and also in cars with airfoil wings that redirect air ...
This is caused primarily by the ground or water obstructing the creation of wingtip vortices and interrupting downwash behind the wing. [6] [7] A wing generates lift by deflecting the oncoming airmass (relative wind) downward. [8] The deflected or "turned" flow of air creates a resultant force on the wing in the opposite direction (Newton's 3rd ...
“Disease X,” according to the World Health Organization, “represents the knowledge that a serious international epidemic could be caused by a pathogen currently unknown to cause human ...
Dynamic stall is a non-linear unsteady aerodynamic effect that occurs when airfoils rapidly change the angle of attack. The rapid change can cause a strong vortex to be shed from the leading edge of the aerofoil, and travel backwards above the wing. [38] [39] The vortex, containing high-velocity airflows, briefly increases the lift produced by ...
Rachel Lindsay received a major wakeup call from her therapist about the type men that she dates. On the June 3 episode of Scott Evans’ YouTube series, Lindsay said her therapist told her that ...