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    $\begingroup$ For what it's worth, that picture is totally inaccurate. $\endgroup$
    – Tanner Swett
    Commented Jan 22, 2023 at 5:52
  • 6
    $\begingroup$ The closest thing to a "static lift" would be a balloon with a heated air raising due to buoyancy force. But you have said "no" to a balloons, so... $\endgroup$
    – Agnius Vasiliauskas
    Commented Jan 23, 2023 at 8:17
  • 5
    $\begingroup$ This section on the Wikipedia article about lift en.wikipedia.org/wiki/… explains why lift isn't generated the way you think it is. $\endgroup$
    – Vorbis
    Commented Jan 23, 2023 at 8:44
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    $\begingroup$ You don't understand it correctly. The shape of the wing doesn't generate "lift/thrust with the difference in pressure" (whatever that means). Difference in pressure is the result of difference in velocity across the wing. Difference in velocity is the result of air being viscous. Even if you don't have a wing, there is still difference in pressure across the air FLOW - the stagnant air doesn't flow, thus there is no pressure difference in it (neglecting hydrostatics). That all comes from the Navier-Stoke's. In order to understand all that, you have to take an advanced fluid mechanics course. $\endgroup$
    – Ivan Nepomnyashchikh
    Commented Jan 23, 2023 at 17:51
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    $\begingroup$ The high speed/low pressure vs. low speed / high pressure in the picture is correct. However, the distance is almost irrelevant and the flow cannot be parallel to the ground both before and after the airfoil. The streamlines are more like this - note the airfoil is symmetric. For pictures with wind coming horizontally from left, try hyperphysics.phy-astr.gsu.edu/hbase/Fluids/airfoil.html Note how it turns down after the airfoil. $\endgroup$
    – Vladimir F Героям слава
    Commented Jan 23, 2023 at 19:52