Joined-wing Aircraft in the Twenty-First Century

摘要

The concept of joined-wing aircraft goes as far back as 1976, when Wolkovitch introduced it for the first time. A joined-wing aircraft has an extra wing (aft wing) that connects any point of the main wing (front wing) to the fuselage. The extra aft wing will cost some extra weight. However, it also adds some geometric stiffness to the aircraft. Therefore, it allows lighter wing design and a higher aspect ratio. This concept was revisited in the 21st century. The field has gotten to a mature point, where a literature review is valuable to future researchers. This paper studies many articles published since 2000 in areas related to numerical studies of joined-wing aircraft and suggests areas related to this concept for further research in the future.