save you the time, they talk a lot without answering the "why" question. Delta uses "Split scimitar winglets" ... "to produce up to 5.5% fuel savings per airc

save you the time, they talk a lot without answering the "why" question. Delta uses "Split scimitar winglets" ... "to produce up to 5.5% fuel savings per aircraft, an improvement on the 3.3% savings provided by blended winglets."