"Morgans" wrote
I don't think you could compare jet blast and tip vortices, could you?

Well, they have to compare somehow. The jet blast generates lift through the
mechanism of the wing. So total downwash should equal, approximate, or at
least be related to jet blast. Granted, jet blast is probably more
concentrated, while downwash is spread over a larger area.

More importantly... I just needed the slightest excuse to post that mpg big
grin

Eric