Shopping for pilot headsets can quickly become confusing, especially for the new or less technologically inclined pilot. There are so many factors to consider: on-ear vs over-ear headset, plug type, and passive vs active noise reduction, to name a few.
The first airplane flap was developed in 1916, just over a decade after Kitty Hawk. Aircraft designers realized that wing flaps could be used to change the shape and therefore the aerodynamic performance of the wings during flight. Over the next century, multiple designs have been developed in the quest to achieve the perfect lift-to-drag ratio capabilities for all phases of flight from takeoff to landing.