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US Air Force Advances Blended-Wing Body Aircraft Prototype for Next-Generation Tankers and Airlifters.
The U.S. Air Force is advancing the development of a blended-wing body (BWB) aircraft, a design that integrates the fuselage and wings into a unified aerodynamic structure. This concept aims to enhance military and commercial aviation capabilities by improving fuel efficiency, extending range, and increasing payload capacity. Currently, a subscale prototype, referred to as "Pathfinder," is undergoing testing to refine control systems and finalize the design of the full-scale model, with the first flight scheduled for 2027.
Although the BWB program is not directly linked to the Next-Generation Air Refueling System (NGAS), its technological advances may influence future decisions regarding tankers and transporters (Picture source: USAF)
In August 2023, the Air Force selected the startup JetZero, in partnership with Northrop Grumman, to develop this demonstrator. The subscale model, with a wingspan of 23 feet—approximately one-eighth of the full-scale aircraft—has validated the core design principles. Preliminary tests have demonstrated a 30% reduction in aerodynamic drag, along with enhanced lift and energy efficiency. The project is overseen by the Air Force's Assistant Secretary for Energy, Installations, and Environment.
The BWB concept harmonizes the fuselage and wings, offering strategic advantages. It can reduce fuel consumption by up to 50% compared to conventional aircraft, minimize noise levels by as much as 15 decibels according to NASA simulations, and occupy a smaller footprint, improving storage and operational availability. These features make it well-suited for strategic transport, freight, and aerial refueling missions over long distances.
Testing of the Pathfinder, approved by the Federal Aviation Administration in 2024, is being conducted at Crow’s Landing, California. The trials have validated computational fluid dynamics models and flight control laws, which will be critical for the full-scale model. Simultaneously, Scaled Composites, a division of Northrop Grumman, has started manufacturing initial components, including a prototype wing, and is employing an integrated testing facility to mitigate risks before production begins.
Although the BWB program is not directly linked to the Next-Generation Air Refueling System (NGAS), its technological advances may influence future decisions regarding tankers and transporters. Designed to address the challenges of the coming decades, the BWB is particularly relevant for operations in the Indo-Pacific region, where vast distances require aircraft with maximum range and energy efficiency. The concept aligns with the Agile Combat Employment (ACE) strategy, which emphasizes dispersed air operations supported by efficient and timely logistics.
Funded through a cost-sharing arrangement, the project combines $230 million from the Air Force with equivalent commitments from private investors. By integrating energy efficiency, operational flexibility, and a response to evolving strategic needs, the BWB concept represents a forward-looking approach to redefining the future of aviation.