Hobienick,

I'm actually a mechanical engineer myself and I told did my share of fluid mechanic courses. You won't loose me any time soon with vector diagrams and math or whatever. In addition and as a hobby I continued getting educated on these subjects because of my interest in sailing.

My question still stands though, you say that the 3rd law of newton explains the larger portion of lift created by an airplane wing than how exactly is this downwash set into existance and how does it excerts its force on the wing if not by a pressure difference over the same wing section ?

I wish to underline ones more that I'm familiar with the different theories of creation of lift. I should rather say models of creating lift. You can condens your explanations without loosing me.

Wouter