They have since created updated designs, including the “split scimitar,” designed for the 737, and the “spiroid” winglet, used on some business jets, which includes a loop. The designs are ...

Perhaps most interesting in the discussion was further insight into the group's spiroid winglet that looks like a loop at the end of the wing and that saves even more fuel above the split scimitar.

CEO Joe Clark said flight testing will begin soon Unlike the company's more extreme spiroid winglets, which Clark said reduce drag by 11%, the split winglets can be constructed using existing ...

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 ...