__Creating Lift__Now we are going to combine some of the concepts discussed earlier and explain how they relate to the overall force of lift and how lift is being created. First we must have air flow of sufficient speed above and below the airfoil to begin the process of creating lift.

Recall that the flat wing, although inefficient at creating lift, is a good way to visualize the chord line of an airfoil. Also remember that the decrease in static pressure above the wing will result in a lift force in an upward direction.

Recall that the flat wing, although inefficient at creating lift, is a good way to visualize the chord line of an airfoil. Also remember that the decrease in static pressure above the wing will result in a lift force in an upward direction.

As the flat wing in our picture at left is pointed slightly upward, some of the air flow will actually strike the lower surface of the flat wing and push it further upward. When we combine this reactionary force with the pressure differential force discussed earlier, the result is

There are two theories based in physics that provide the mathematical reasoning behind this concept: Bernoulli's Principle and Newton's Third Law of motion.

Bernoulli's Principle defines that the static pressure of a fluid will decrease as it's velocity increases, while Newton's Third Law of Motion states for every action there is an equal and opposite reaction.

**total lift**.There are two theories based in physics that provide the mathematical reasoning behind this concept: Bernoulli's Principle and Newton's Third Law of motion.

Bernoulli's Principle defines that the static pressure of a fluid will decrease as it's velocity increases, while Newton's Third Law of Motion states for every action there is an equal and opposite reaction.

Remember that as lift is created, there is also a corresponding amount of drag also developed, and the location where both of these forces originate is called the

As the wing is pitched up farther, the lift being created by account of Newton's Third Law of Motion will increase while the amount of drag will also increase as the total aerodynamic force begins to lean to the right.

**center of pressure**. As we learned a few lessons ago, the total reaction of these forces will result in an aerodynamic force that is directed as shown in the picture below and to the left.As the wing is pitched up farther, the lift being created by account of Newton's Third Law of Motion will increase while the amount of drag will also increase as the total aerodynamic force begins to lean to the right.