The XB-1 supersonic jet from Boom Supersonic completed its 13th and final test flight on February 10, 2025, breaking the sound barrier for the last time.
American space agency NASA announced it has concluded the ground engine tests for the X-59 supersonic airplane, first flight coming later this year ...
NASA's X-59 quiet supersonic research aircraft has taken another successful step toward flight with the conclusion of a series of engine performance tests.