NASA’s X-59 "frankenjet" supersonic flight test without sonic boom
More than two decades since the Concorde supersonic plane last took off, NASA has been flying an experimental plane designed to replace loud sonic booms
FAA Proposal: Supersonic Planes Can Fly Over US Cities If They’re Quiet
A long-standing ban on commercial supersonic flights over the United States would be overturned by a new rule proposed by the US Federal Aviation Administration.