Leeham News has taken a deeper look at the airframe efficiency gains available for the next narrowbody, extending its earlier analysis of wing performance to the fuselage and the wider balance of design choices for a future single-aisle aircraft. The piece forms part of the industry’s broader work on next-generation narrowbody programmes, where manufacturers are studying how advanced wings, fuselage shaping and new engines could combine to improve fuel burn.
The article builds on Leeham’s previous discussion of wing efficiency and follows its examination of next-generation engines two weeks earlier. It focuses on how much of the total improvement in a future narrowbody can come from the airframe itself, rather than propulsion alone. That question remains central to long-range planning across the sector, with Airbus and Boeing both expected to define major elements of their next single-aisle strategies later this decade.
A recent aviation industry report put Airbus’s future single-aisle target at a 20% to 30% fuel-efficiency improvement and highlighted the Wing of Tomorrow effort as a key part of that work. Another recent item placed entry into service for the next Airbus narrowbody around 2038, underscoring that the design debate is aimed at the long term rather than any imminent launch.