Seattle-based Aviation Partners estimates that its blended winglets have saved commercial and business jet operators about 5 billion gal. of jet fuel and expects that amount to double by the end of 2019.

“We are proud to be the world leader in the field of fuel savings for commercial airlines and private aviation,” said Joe Clark, founder and CEO of API, and chairman of Aviation Partners Boeing (APB), a joint venture with the aerospace giant (Chalet 321, 324). “We look forward to adapting our new technology to both existing airplanes and new production designs in the near future.”

Blended winglets are demonstrating 60% more effectiveness over conventional ones, the company says. They reduce the draft created by wingtip vortices, the dual swirls of air formed by the pressure variances on the top surface of an airplane’s wing and on the lower surface. The change increases fuel efficiency and boosts range.

But it isn’t just new aircraft that can reduce the drag created by blended wingtip vortices. API can retrofit the technology onto existing aircraft. The blended winglets are already in service on Dassault’s Falcon 2000, 900 and 50 series aircraft, the Hawker 800 and the Gulfstream II aircraft. Through APB is a joint venture with Boeing, the winglets are riding on many 737 model aircraft, the 757-200 and -300 and the 767-300ER/F, in addition to all of the 737 NG-based business jets. The joint venture is studying airframe development programs for blended winglets and split scimitar winglets as well as other types of new winglet technologies.