(CNN) — What caught your eye the last time you looked out of your airplane window? It might have been the winglet, a now ubiquitous appendage at the end of each wing, often used by airlines to display ...

Throughout the history of aeronautics, people have experimented with various ways of ending wings. The most common tip treatment has been some variation on a simple rounded cap -- for a long time ...

The story of the Boeing 757 and its winglets isn’t about fixing a mistake. It’s about how a strong design adapted as the world changed. Boeing didn’t add blended winglets at first because, for its ...

A United Airlines Boeing 737-800 is equipped with a new, split scimitar winglet that adds a downward foil to the vertical one. Winglets cut drag and add to fuel savings. Boeing calls the odd-looking ...