Supercruise sounds like marketing spin, but in aviation it describes a very specific and demanding trick: flying faster than sound for long stretches without lighting fuel‑guzzling afterburners.

NASA's experimental supersonic X-59 jet designed to travel faster than the speed of sound is preparing for its second flight from California.

The days of fighter jets outrunning ground defenses are long since past, and new aerial innovations are focused on stealth and sensor technology. But raw speed still has a place. Supersonic flight, ...