NASA Boeing X-66 experimental plane project paused
NASA and Boeing have effectively cancelled the X-66 Transonic Truss-Braced Wing (TTBW) concept demonstrator aircraft. Officially described as a “pause,” development of the thin-wing airplane is being halted in favor of ground-based testing. NASA had high hopes for its X66 single-aisle research plane. Based on a modified McDonnell Douglas MD-90, it was designed to explore…