Thanks for the great post! There’s even old NACA (yes, NACA) footage of aircraft of all kinds coming in for landings through red smoke creating just the sort of vortices your graph shows.
335 posted on 12/14/2010 10:38:04 AM PST by BradyLS
(DO NOT FEED THE BEARS!)
You're welcome. BTW, this magnified image from the CBS video that TXnMA posted in #235, looks a lot like what's supposed to happen when a jet aircraft's wingtip vorticies interact with it's engines' contrail.