Keywords: Airfoils - pressure diagrams.svg four airfoils 1 symmetric profile zero lift angle of attack 2 asymmetric profile zero lift angle of attack 3 symmetric profile positive lift angle of attack 4 asymmetric profile positive lift angle of attack quattro profili alari 1 profilo simmetrico ad incidenza di portanza nulla 2 profilo asimmetrico ad incidenza di portanza nulla 3 profilo simmetrico ad incidenza di portanza positiva 4 profilo asimmetrico ad incidenza di portanza positiva Own 2007-11-03 F l a n k e r F l a n k e r Diagrams of forces applying on airfoils |