NASA's Quiet Supersonic Jet Flies
NASA's X-59 Quiet Supersonic Aircraft has completed its first flight from Palmdale, kicking off a new era of low-boom supersonic research. The flight marks the start of experimental campaigns designed to gather aerodynamic and acoustic data. This real-world data will be crucial for validating CFD models and shaping the design of future civil supersonic planes.
The X-59 is the product of a $247.5 million contract awarded by NASA to Lockheed Martin's legendary Skunk Works division in 2018. The October 28, 2025, initial flight was a subsonic check-out, reaching an altitude of 12,000 feet and a speed of 230 mph, with test pilot Nils Larson at the controls. The aircraft's unique shape is the key to its quiet performance. An elongated 38-foot nose, making up almost a third of the plane's 99.7-foot length, is specifically designed to separate the shockwaves that typically merge to create a powerful sonic boom. This shaping aims to reduce Concorde's 105-decibel boom to a 75-decibel "thump," akin to the sound of a nearby car door closing. Propulsion comes from a single General Electric F414-GE-100 engine, a modified version of the powerplant used in the F/A-18 Super Hornet, producing 22,000 pounds of thrust. The engine is mounted on top of the fuselage to shield engine noise and shockwaves from reaching the ground, a critical element of the low-boom design. Because the long nose obstructs all forward vision, pilots rely on NASA's eXternal Vision System (XVS), which uses a 4K camera and display to create a virtual forward window. The X-59 also integrates proven components from other military aircraft, including the landing gear from an F-16 and the canopy from a T-38. This first flight kicks off Phase 1 of the Quesst mission. The next stage, Phase 2, will involve pushing the aircraft to its target speed of Mach 1.42 at 55,000 feet over a test range at Edwards Air Force Base to validate the acoustic models. A 30-mile-long array of 125 ground sensors will precisely measure the sonic "thump." The ultimate goal is Phase 3: flying the X-59 over several to-be-selected U.S. cities to gather data on how communities perceive the sound. This public response data will be delivered to the FAA and international regulators to help them replace the 1973 ban on commercial supersonic flight over land with a new standard based on acceptable noise levels.
