|Quoting JeffM (Reply 9):|
It's absolutely rediculous that anyone would think that is dust.
To you or me, or anyone really interested in aviation, it might seem a bit on the "rediculous" side. On the other hand, for those who are not all that "into" it, and that might have come across the term (for example) crop-dusting, it might make perfect sense.
Now, to the issue...
If we are discussing the "anomaly" in the smoke coming from Swedish Air Force's Team60, I would say it's some kind of optical problem. Might be the glass or something stuck on the sensor, but most likely an editing problem. Looks like a small rectangular-shaped piece of the pic has been cut-out and displaced. I've never seen any aerodynamical disturbance like that before and I believe it to be highly unlikely that only 4 of 6 aircrafts in a tight formation experiences a shear, or vortice residue, creating a "hump" like that.
Anyway, Good night folks! I'm off to bed!
In thrust I trust.