Experimental jet achieves supersonic flight, minus boom

The world of experimental self-built aircraft is full ... Built to copy some of the 1950’s era innovations in delta-style jet aircraft, the plane is essentially a flying wing that seats four.
Not every experimental jet fighter made by the U.S. military would go on to reach production, for any number of reasons.
Boom Supersonic’s XB-1 has broken the sound barrier, paving the way for faster commercial flights if future tests succeed.
They are the closest thing we've ever built to X-wings from "Star Wars," and in fact, experimental ... Where once fighter jets were a separate breed of aircraft from bombers, many modern ...
According to the US company, the most recent and final test flight of XB-1 on February 10 also achieved supersonic speeds ...