Prandtl's Lift Equation

Prandtl's Lift Equation quantifies the lift generated by an airfoil (wing) by relating it to the circulation of air around the wing. It states that the lift depends on the air density, the free stream velocity (airflow speed), the wing's span, and the circulation—a measure of how much the airflow spins around the wing. Essentially, it explains that lift arises from the difference in pressure created by this airflow pattern, connecting physical airflow behavior to the force that keeps airplanes aloft in a precise, mathematical way.