X‑66A Design Supports Net‑Zero Aviation Goals

The X‑66A is the first NASA X‑plane created to help the United States reach the net‑zero greenhouse‑gas emissions target for aviation set in the 2024 White House Climate Action Plan. The demonstrator tests a Transonic Truss‑Braced Wing configuration that could lower fuel use by up to 30 % and cut emissions compared with today’s best‑in‑class single‑aisle aircraft. (Primary source)

Boeing will work with NASA to convert an MD‑90 airframe. The conversion shortens the fuselage, replaces the original wings and engines, and mounts new engines beneath long, thin wings supported by aerodynamic trusses. These structural changes form the core of the Transonic Truss‑Braced Wing design and are intended to inform a future generation of more sustainable single‑aisle airliners. (Primary source)

Single‑aisle aircraft generate nearly half of global aviation emissions. By demonstrating a more efficient version of this aircraft type, the X‑66A could play a significant role in decarbonizing the sector. (Primary source)