What part of an airfoil is located at the back?

The trailing edge is the part of an airfoil that is located at the back, farthest from the leading edge. This edge plays a crucial role in the aerodynamics of the airfoil, where airflow from the upper and lower surfaces reattaches after passing over the airfoil. Understanding the function of the trailing edge is essential in aerodynamics, especially in controlling airflow and managing lift and drag forces around the wing during flight.

The leading edge, in contrast, is at the front of the airfoil, where the airflow initially contacts the wing. The wingtip is the extremity of the wing, which influences aspects such as tip vortices and overall lift distribution. Flaps are movable surfaces found typically on the trailing edge itself that are used to increase lift during takeoff and landing, but they are not synonymous with the trailing edge. The distinction among these parts is vital for comprehending the overall functionality and performance of an airfoil.