Originally Posted by
Stanwell
Sorry, Tourist.
I, too, must call you on your point #2.
Which bit?
The fact that the biggest vortices come off the outside edge of the flap, or that they are biggest when slow and heavy?
https://www.youtube.com/watch?v=dfY5ZQDzC5s
Watch this video for the landing aircraft with flaps deployed, and tell me where you think the vortices are....