Boeing and NASA say they’ll collaborate with Seattle-based Alaska Airlines and four other major airlines on the Sustainable Flight Demonstrator project, which aims to put Boeing’s innovative X-66 braced-wing aircraft design through flight tests in the 2028-2029 time frame.
The X-66A makes use of a concept known as the Transonic Truss-Braced Wing, or TTBW, which features ultra-long, ultra-thin, drag-reducing wings that are stabilized by diagonal struts.
The demonstrator aircraft will also incorporate parallel advancements in propulsion systems, materials and system architecture. When all those factors are combined, the single-aisle X-66A should reduce fuel requirements and carbon emissions by up to 30% relative to today’s domestic airplane fleet.
