Though partially funded by NASA, it is still a private site. Therefore, before downloading any materials for use, you need to ask permission. With these two forces in opposition to each other, it is obvious that increased lift and decreased weight are objectives in both the designing and flying of aircraft. Induced lift can be increased, as has been mentioned before, by changing the camber, or curvature, of the airfoil.
Work continues in an effort to achieve the most efficient designs possible.
As indicated earlier, lift is increased as the angle of attack is increased because there is more relative wind striking the airfoil's bottom surface, creating higher pressure. There is also an increase in the induced lift, because at a higher angle of attack the air has to travel even farther over the top surface of the wing. This is called stall. The air can no longer flow smoothly over the wing's upper surface. Instead, the air burbles over the wing and lift is lost.