Originally Posted by
bookworm
Nope, that's not what the
NASA site says.
There
is an increase in velocity above the aerofoil and the velocity differential between upper and lower surface
is related through Bernoulli's principle to the pressure difference. The pressure difference exactly accounts for the lift.
The piece of the "equal transit time" explanation that is incorrect is the association of the velocity differential with the difference in "path lengths" above and below the aerofoil. The velocity differential is much higher than would be anticipated from "equal transit times".
Yes, I stand corrected. Thanks for that bookworm. After doing those java simulation experiements, I found the pressure differential to be around 0.15 psi at 10 degrees AoA and thought it couldn't be enough to produce the 623 pounds of lift. Well, I guess I was wrong. The last paragrah on that page you quoted clears that up.
Cheers!