The Experimental NASA X-59 Aircraft
After a series of subsonic tests, NASA’s experimental X-59 aircraft is now ready for supersonic trials. Designed to tackle the issue of sonic booms that come with conventional supersonic flight, the X-59 made its maiden voyage in October 2025. Since March 2026, the team has completed 14 test flights. In the most recent evaluations, the aircraft reached Mach 0.95 (roughly 1,000 km/h) at an altitude of 13,000 meters.
Key Features and Upcoming Plans
According to the schedule, the X-59 is set to break the sound barrier at 13,000 meters, with a top speed of Mach 1.6 (nearly 1,960 km/h) expected during final tests at 18,300 meters. The aircraft boasts a unique design:
- The cockpit lacks a forward-facing windshield;
- Pilots navigate using the eXternal Vision System (XVS) camera array;
- The fuselage measures 30 meters in length;
- Its wingspan is 9 meters.
A standout feature of the X-59 is that instead of the deafening bang typically associated with supersonic flight, it produces a barely perceptible thud, referred to as a “quiet thump.” This innovation aims to reduce the negative impact of supersonic travel on people on the ground. The team continues to work toward reaching Mach 1.4 at an altitude of 16,700 meters, which will be the next milestone in the testing program.
The development of the X-59 marks a significant step in NASA’s efforts to minimize the environmental disruption caused by supersonic flight—a major hurdle for commercial supersonic aviation. If the tests succeed, this aircraft could lay the groundwork for new aviation standards, potentially reviving supersonic travel for civilian passengers in a way that is both more comfortable and less disruptive to communities below.