Boom Supersonic says its XB-1 aircraft achieved supersonic flight without an audible sonic boom on the ground below. CEO Blake Scholl hopes supersonic passenger flight will eventually be allowed in the U.

According to the US company, the most recent and final test flight of XB-1 on February 10 also achieved supersonic speeds without making a boom. Boom Supersonic plans to apply the lessons learned from the XB-1 test flights to its future commercial airliner,

A Colorado-based company said it broke the sound barrier three times without generating a sonic boom that reached the ground.