forces acting on airfoils in motion relative to the air (or other gaseous fluids)

(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid

(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid

(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid