What is the primary function of flaps during flight?

The primary function of flaps during flight is to increase lift at slower speeds. Flaps are aerodynamic surfaces on the wings that can be extended to change the wing's shape and increase its surface area, thereby enhancing the lift produced by the wing. This is particularly important during critical phases of flight such as takeoff and landing, where the aircraft needs to operate safely at lower speeds.

By extending the flaps, pilots can maintain controlled flight at slower airspeeds without risking a stall, allowing for safer landings that require shorter distances. Additionally, the increased lift enables the aircraft to take off more efficiently even from shorter runways. While flaps can indeed aid in managing drag and can contribute to stabilization in certain conditions, their primary design purpose is centered on lift enhancement, making them essential for safe operation during lower speed phases of flight.