On August 27, 1977, the Gates Learjet Model 28 prototype made its first flight and became the first jet to fly with winglets.Winglet theory and history, performance improvements of the Model 28/29 and the Model 50 Series configuration are discussed in this paper.
The Learjet “Longhorn” Series - The First Jets with Winglets
Sae Technical Papers
Business Aircraft Meeting and Exposition ; 1979
1979-02-01
Conference paper
English