This arrangement did not hold the correct airfoil shape at high speeds according to tests conducted.

You might get a better idea of what happens by moving an airfoil shape through water.

Transformation from other circles make a wide range of airfoil shapes.

The airfoil shapes allow air to pass with minimum resistance, resulting in lower drag.

The stock is given an airfoil shape by completely covering it with galvanised steel plates.

The construction of the wing starts with the rib which defines the airfoil shape.

If the forestay is allowed to slack, the sail will lose its airfoil shape and not perform as well.

The downstrokes provide lift and the airfoil shape of the wings provides forward thrust.

The only way this could be avoided is if the car had an airfoil shape, so that the air pushes up on it.

If the speed is high enough air flowing over the car's overall airfoil shape will create sufficient lift to force the car to become airborne.