Crow instability

The Crow instability is responsible for the shape of this contrail
The Crow instability is also responsible for this different shape of contrail

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 Crow instability is most commonly observed in the skies behind large aircraft such as the Boeing 747. It occurs when the wingtip vortices interact with contrails from the engines, producing visible distortions in the shape of the contrail.

Instability development

The Crow Instability is a vortex pair instability, and typically goes through several stages:

References

External links


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