Discussion and animated graphic of circulation he

http://www.avweb.com/news/airman/183261-1.html

--

Roger Long



"xerj" wrote in message
...
Every time I think I have it sort of worked out, I fall in a heap.
I've read through "See How It Flies", but it's still a bit beyond
me.

I can understand why a spinning ball would create a circular flow
around itself, but I can't really grasp why a wing would.

Does anyone have a lay explanation as to why?