NASA/Jim Ross
NASA's X-59 quiet supersonic research aircraft flies above NASA's Armstrong Flight Research Center in Edwards, California, on April 28, 2026, during testing focused on lower-speed and altitude flight conditions in support of NASA's Quesst mission.
The X-59 has completed initial test flights at high altitudes and near-supersonic speeds, opening the door for additional flights focused on its full operating range. These more recent, lower-altitude flights at lesser speeds are helping to confirm the X-plane's performance across a wide range of conditions, including flying with the landing gear both retracted and extended.
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