Making history ✈️ On Oct. 28, 2025, our X-59 quiet supersonic research aircraft took off for the first time. Though this initial flight was subsonic - that is, slower than the speed of sound - the X-59 is designed to fly at supersonic speeds and reduce the sound of loud sonic booms to quieter sonic thumps. For this first flight, NASA test pilot Nils Larson flew the X-59 up to an altitude of about 12,000 feet and an approximate top speed of 230 mph (370 kph), precisely as planned. These conditions allowed the team to conduct in-flight system and performance checks. Next up for @NASAAero and the X-59? We’re prepping for a series of test flights where the plane will operate at higher altitudes and supersonic speeds. This phase will ensure the X-59 meets performance and safety expectations. Image description: The X-59 quiet supersonic research aircraft lifts off from Palmdale, California. The white and silver plane has a distinctive shape with a long, sharply pointed nose. The words "NASA" and "X-59" are on the body of the aircraft. There are hazy mountains in the distance. Credit: NASA/Carla Thomas #NASA #Aeronautics #Aviation #Supersonic #Quiet #Flying
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