excellent description. thank you. great discussion, folks. I really can not tell you how much I appreciate it.
tf > Thicker sections stall later, given the maximum thickness at the same > %chord. This is because the corner you are asking the flow to go around > is more gradual with a thicker section, so the flow can stay well > ordered. A thicker section not stalled has more drag than an equivalent > but thinner section not stalled. BTW, the flow stalling with AOA is not > a discrete event, but rather starts at some distance behind the nose of > the section on the "high side", and moves forward with increasing AOA. A > partially stalled foil still generates lift, but is very draggy, where a > fully stalled foil (like a dingy rudder hard over) really only works as > a brake, and doesn't generate much lift at all. > > Keith Sneddon
