Key facts
- NASA's X-59 quiet supersonic research aircraft completed its first supersonic flight on June 5, 2026.
- The X-59 is designed to reduce sonic booms to a quieter 'thump' or 'whoosh' sound.
- The aircraft features a long, tapered nose and an eXternal Vision System (XVS) for pilot visibility.
- NASA intends to tour the X-59 across the US to collect public feedback on the noise levels.
- US legislation is progressing to potentially allow overland supersonic flight, overturning a previous ban.
NASA's experimental X-59 aircraft successfully completed its first supersonic flight on June 5, 2026, marking a significant step towards potentially reviving overland supersonic travel. The aircraft, developed by Lockheed Martin in partnership with NASA, is engineered to transform the typically disruptive sonic boom into a much quieter 'thump' or 'whoosh' sound, comparable to a car door closing.
The X-59's unique design, featuring a long, tapered nose that constitutes nearly a third of its length, is crucial to this noise reduction. This aerodynamic shape is intended to manage and break up the shockwaves generated at supersonic speeds, preventing them from merging into a loud boom. Instead, the shockwaves are spaced out and weakened, resulting in a sound level closer to 75 perceived level in decibels (PldB), a stark contrast to the Concorde's approximately 105 PldB.
Piloting the X-59 presents unique challenges, notably the absence of a forward-facing window due to its elongated nose. Pilots rely on an advanced eXternal Vision System (XVS), which uses high-resolution cameras to display a forward view on a 4K monitor, augmented with flight data. Test pilots Jim Less and David Nils Larson underwent extensive simulator training, accumulating hundreds of hours and practicing numerous landings to adapt to this system.
NASA's ambitious plan includes taking the X-59 on a national tour across the United States. This tour aims to gather feedback from residents in various communities regarding the perceived noise of the quieter sonic thumps. This public input is vital as the US Congress is currently considering legislation that could lift the 1973 ban on overland supersonic flight, a ban that stemmed from public complaints during earlier military supersonic tests.
While the X-59 program demonstrates the technical feasibility of quieter supersonic flight, the revival of commercial supersonic air travel would still face significant financial hurdles, particularly concerning the high fuel consumption costs associated with such aircraft.