Patent attributes
An airplane including a wing and a wing tip attached to an end of the wing. The wing has a wing leading edge and a wing trailing edge in a wing chord plane. The wing tip includes a winglet and a ventral fin. The winglet has a winglet leading edge continuously transitioning from the wing leading edge, and a winglet trailing edge continuously transitioning from the wing trailing edge. The winglet leading edge may be swept rearward. The winglet includes an adapter section attached to the end of the wing, a transition section attached to the adapter section, a blade section attached to the transition section, the blade section extending above the wing chord plane, and a first tip section attached to the blade section. The ventral fin may be coupled to the winglet at an attachment location adjacent the transition section, and extends below the wing chord plane.