Abstract: A winglet system for a wing of an aircraft is provided. The winglet system comprises an attachment end for attachment to a main wing of the aircraft, an upper winglet and a lower winglet. The upper and lower winglets are staggered and also overlap one another along the chord of the attachment end. A spanwise profile of the lower winglet has a midpoint where a slope of the spanwise profile at a point outboard of the midpoint is inclined more upwardly than a slope of the spanwise profile at the midpoint. The configuration of the winglet system may provide benefits such as a reduced bending moment and reduced negative interference between the winglets while also managing ground clearance.

Abstract: Wing to fuse junction shaping, and associated systems and methods are disclosed herein. An aircraft includes: a fuselage, a wing, and a fairing that covers a junction between the wing and the fuselage. The fairing is configured to receive an inboard section of the wing. An outer surface of the fairing includes an upstream bump proximate to a leading edge of the wing, a midsection sculpting, and a downstream bump proximate to a trailing edge of the wing.