reply to post by ipsedixit
Well, you have the basics correct, in the last post. Where you're going off is the notion of the airplane's weight and effect on the surrounding
air, sounds like you're thinking more in terms of a boat, on the two-dimensional surface of the water.
NOW, in addition to the 'textbook' description of the "lower' pressure on the upper lifting surfaces, that's merely part of it...look into
something called the "Coanda Effect".
BUT, back to vortices: Essentially, they are produced at the wingtips because of the pressure differential, and the air below DOES tend to roll up
unimpeded to above the wing, 'around' the end of the wing.
You may be having ideas of air displacement
as the airplane flies through it, but it doesn't do something like pushing a "bow wave" ahead of
it, or anything like that. The air, although it behaves as a "fluid", is of course so much less viscous than water, for instance, that although
there are comparisons, the air, having less mass and inertia, is easily cleaved by the airplane.
IN THIS discussion, though, we assert that the vortices, that some (including the OP are asking about) that seem to be missing, the question is in
fact moot, because the airplane had ALREADY PASSED the area, and any lingering vortex disturbance would be miniscule in comparison to the forces of
the explosive gases, and the dynamics of that energy, and movement.
BTW...I've flown airplanes for over 35 years, so I understand a thing or two about how they work....so, I will be able to understand your points.