If you've ever wondered what the curved ends on the sides of a plane's wings are for, this is what they do.

(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 ...

API has certified its split scimitar winglet on all models of the Boeing 737NG, including the Boeing Business Jet variant. Credit: Aviation Partners, Inc. Anyone who occupies a window seat with a ...

The Boeing 737 was designed before winglets became prevalent throughout the aviation industry. As such, 737s were delivered without winglets for most of the 20th century until the 737 NG series. Even ...