. . "X-59" . . . "Lockheed Martin X-59 QueSST" . . . . . "X-59 QueSST" . "NASA X-59" . "X-59 Quiet SuperSonic Technology" . . . . . . "low-noise SST" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Lockheed Martin X-59 QueSST" . . . . .