Civilian jet breaks sound barrier during historic test flight in U.S.
Civilian jet breaks sound barrier during historic test flight in U.S.https://talk103fm.com/wp-content/themes/movedo/images/empty/thumbnail.jpg150150adminadminhttps://secure.gravatar.com/avatar/6e775599c6cae59b48d21c1110feedc9?s=96&d=mm&r=g
The test flight of the XB-1 aircraft is a step in manufacturer Boom Supersonic’s goals of building a supersonic passenger jet. source
