Where R the smart ones?
Lift has many factors, but one can't rule out the majority element from Bernoulli's principle (BP).
When a wing tip vortex is formed, a significant portion is due to BP.
Think of air of higher pressure that flow towards lower pressure (wind, for example).
The higher pressure air below the wing spills over the wing tip towards the lower pressure above. As viewed from behind, the left wing tip vortex is clockwise and the right wing's is counter clockwise.
There is an awful lot of bad information regarding lift on the internet - posted by aero dynamists and physicists. Some of them may be teaching in accredited institutions of higher learning.
It makes one pause when considering why NASA is going to use 50 year old technologies and calculations for the future moon launches.
Last edited by SmoothOnTop; 03-20-2008 at 05:15 PM.