This is the first time anyone in the United States has flown a reusable hypersonic rocket plane since the last flight of the ...

NASA and Boeing are putting the Sustainable Flight Demonstrator X-66 on hold to focus on thin-wing research after two years ...

Boeing Puts NASA X-66 Plan On Ice As Future X-Plane Fears Grow is available to both Aviation Week & Space Technology and AWIN subscribers. Subscribe now to read this content, plus receive critical ...

Its previous flight, which wrapped up in 2022, set a new endurance record for the space plane, logging 908 ... it was ...