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    • By NASA
      5 Min Read NASA’s X-59 Moves Toward First Flight at Speed of Safety
      NASA’s X-59 quiet supersonic research aircraft is seen at dawn with firetrucks and safety personnel nearby during a hydrazine safety check at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. The operation highlights the extensive precautions built into the aircraft’s safety procedures for a system that serves as a critical safeguard, ensuring the engine can be restarted in flight as the X-59 prepares for its first flight. Credits: Lockheed Martin As NASA’s one-of-a-kind X-59 quiet supersonic research aircraft approaches first flight, its team is mapping every step from taxi and takeoff to cruising and landing – and their decision-making is guided by safety.
      First flight will be a lower-altitude loop at about 240 mph to check system integration, kicking off a phase of flight testing focused on verifying the aircraft’s airworthiness and safety. During subsequent test flights, the X-59 will go higher and faster, eventually exceeding the speed of sound. The aircraft is designed to fly supersonic while generating a quiet thump rather than a loud sonic boom.
      To help ensure that first flight – and every flight after that – will begin and end safely, engineers have layered protection into the aircraft.
      The X-59’s Flight Test Instrumentation System (FTIS) serves as one of its primary record keepers, collecting and transmitting audio, video, data from onboard sensors, and avionics information – all of which NASA will track across the life of the aircraft.
      “We record 60 different streams of data with over 20,000 parameters on board,” said Shedrick Bessent, NASA X-59 instrumentation engineer. “Before we even take off, it’s reassuring to know the system has already seen more than 200 days of work.”
      Through ground tests and system evaluations, the system has already generated more than 8,000 files over 237 days of recording. That record provides a detailed history that helps engineers verify the aircraft’s readiness for flight.
      Maintainers perform a hydrazine safety check on the agency’s quiet supersonic X-59 aircraft at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. Hydrazine is a highly toxic chemical, but it serves as a critical backup to restart the engine in flight, if necessary, and is one of several safety features being validated ahead of the aircraft’s first flight.Credits: Lockheed Martin “There’s just so much new technology on this aircraft, and if a system like FTIS can offer a bit of relief by showing us what’s working – with reliability and consistency – that reduces stress and uncertainty,” Bessent said. “I think that helps the project just as much as it helps our team.”
      The aircraft also uses a digital fly-by-wire system that will keep the aircraft stable and limit unsafe maneuvers. First developed in the 1970s at NASA’s Armstrong Flight Research Center in Edwards, California, digital fly-by-wire replaced how aircraft were flown, moving away from traditional cables and pulleys to computerized flight controls and actuators.
      On the X-59, the pilot’s inputs – such as movement of the stick or throttle – are translated into electronic signals and decoded by a computer. Those signals are then sent through fiber-optic wires to the aircraft’s surfaces, like its wings and tail.
      Additionally, the aircraft uses multiple computers that back each other up and keep the system operating. If one fails, another takes over. The same goes for electrical and hydraulic systems, which also have independent backup systems to ensure the aircraft can fly safely.
      Onboard batteries back up the X-59’s hydraulic and electrical systems, with thermal batteries driving the electric pump that powers hydraulics. Backing up the engine is an emergency restart system that uses hydrazine, a highly reactive liquid fuel. In the unlikely event of a loss of power, the hydrazine system would restart the engine in flight. The system would help restore power so the pilot could stabilize or recover the aircraft.
      Maintainers perform a hydrazine safety check on NASA’s quiet supersonic X-59 aircraft at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. Hydrazine is a highly toxic chemical, but it serves as a critical backup to restart the engine in flight, if necessary, which is one of several safety features being validated ahead of the aircraft’s first flight. Credits: Lockheed Martin Protective Measures
      Behind each of these systems is a team of engineers, technicians, safety and quality assurance experts, and others. The team includes a crew chief responsible for maintenance on the aircraft and ensuring the aircraft is ready for flight.
      “I try to always walk up and shake the crew chief’s hand,” said Nils Larson, NASA X-59 lead test pilot. “Because it’s not your airplane – it’s the crew chief’s airplane – and they’re trusting you with it. You’re just borrowing it for an hour or two, then bringing it back and handing it over.”
      Larson, set to serve as pilot for first flight, may only be borrowing the aircraft from the X-59’s crew chiefs – Matt Arnold from X-59 contractor Lockheed Martin and Juan Salazar from NASA – but plenty of the aircraft’s safety systems were designed specifically to protect the pilot in flight.
      The X-59’s life support system is designed to deliver oxygen through the pilot’s mask to compensate for the decreased atmospheric pressure at the aircraft’s cruising altitude of 55,000 feet – altitudes more than twice as high as that of a typical airliner. In order to withstand high-altitude flight, Larson will also wear a counter-pressure garment, or g-suit, similar to what fighter pilots wear.
      In the unlikely event it’s needed, the X-59 also features an ejection seat and canopy adapted from a U.S. Air Force T-38 trainer, which comes equipped with essentials like a first aid kit, radio, and water. Due to the design, build, and test rigor put into the X-59, the ejection seat is a safety measure.
      All these systems form a network of safety, adding confidence to the pilot and engineers as they approach to the next milestone – first flight.
      “There’s a lot of trust that goes into flying something new,” Larson said. “You’re trusting the engineers, the maintainers, the designers – everyone who has touched the aircraft. And if I’m not comfortable, I’m not getting in. But if they trust the aircraft, and they trust me in it, then I’m all in.”
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      Details
      Last Updated Sep 12, 2025 EditorDede DiniusContactNicolas Cholulanicolas.h.cholula@nasa.govLocationArmstrong Flight Research Center Related Terms
      Armstrong Flight Research Center Advanced Air Vehicles Program Aeronautics Aeronautics Research Mission Directorate Ames Research Center Glenn Research Center Langley Research Center Low Boom Flight Demonstrator Quesst (X-59) Supersonic Flight Explore More
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    • By Space Force
      The first Proliferated Warfighter Space Architecture Tranche 1 Transport Layer space vehicles successfully launched from Vandenberg Space Force Base.

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    • By NASA
      A child of the Space Shuttle Program, Jeni Morrison grew up walking the grounds of NASA’s Johnson Space Center in Houston with her parents and listening to family stories about human spaceflight. 
      Now, with more than 15 years at NASA, Morrison serves as one of Johnson’s Environmental Programs managers. She ensures the center complies with laws that protect its resources by overseeing regulatory compliance for cultural and natural resources, stormwater and drinking water programs, and the National Environmental Policy Act. She also safeguards Johnson’s historic legacy as Johnson’s Cultural Resources manager. 
      Jeni Morrison in the mall area at NASA’s Johnson Space Center in Houston, where employees often see local wildlife, including turtles, birds, deer, and the occasional alligator. “I make sure our actions comply with the National Historic Preservation act, since the center is considered a historic district with two National Historic Landmarks onsite,” Morrison said. “I make sure we respect and document Johnson’s heritage while paving the way for new efforts and mission objectives.” 
      Morrison takes pride in finding solutions that increase efficiency while protecting resources. One example was a project with Johnson’s Geographic Information System team to create an interactive material and chemical spill plan map. The new system helps responders quickly trace spill paths above and underground to deploy resources faster, reducing cleanup costs and minimizing environmental impacts. 
      “Every improvement we make not only saves time and resources, but strengthens our ability to support NASA’s mission,” she said.  
      By the very nature of our work, NASA makes history all the time. That history is important for all people, both to remember the sacrifices and accomplishments of so many, but also to ensure we don’t repeat mistakes as we strive for even bolder achievements.
      Jeni Morrison
      Environmental Program Manager
      Jeni Morrison presents an overview of environmental compliance and center initiatives to employees at NASA’s Johnson Space Center in 2014. NASA/Lauren Harnett For Morrison, success often comes down to teamwork. She has learned to adapt her style to colleagues’ needs to strengthen collaboration.  
      “By making the effort to accommodate others’ communication styles and learn from different perspectives, we create better, more efficient work,” she said. “Thankfully, so many people here at NASA are willing to teach and to share their experiences.”  
      Her message to the Artemis Generation is simple: Always keep learning! 
      “You never know when a side conversation could give you an answer to a problem you are facing down the line,” she said. “You must be willing to ask questions and learn something new to find those connections.” 
      Jeni Morrison (second from right) with the Biobased Coolant Project Team at NASA’s Johnson Space Center in 2018. The team tested biobased metalworking coolants and identified a product that outperformed petroleum-based options, meeting flight hardware specifications while reducing waste disposal costs and labor hours. Even as a young child visiting NASA Johnson, I could feel the sense of adventure, accomplishment, and the drive to reach new heights of human capability. I realize that those experiences gave me a fascination with learning and an inherent need to find ways to do things better.
      jENI mORRISON
      Environmental Program Manager
      Her passion for learning and discovery connects to a family tradition at NASA. Her grandfather contributed to multiple Apollo missions, including helping solve the oxygen tank malfunction on Apollo 13. Her mother worked at the center transcribing astronaut recordings and writing proposals, and her father flew experiments aboard the space shuttle and International Space Station. Morrison’s sister and extended family also worked at Johnson.  
      Now her son is growing up on the center grounds while attending the JSC Child Care Center. “As the fourth generation to be at Johnson, he is already talking about how he loves science and can’t wait to do his own experiments,” she said. 
      For Morrison, carrying that family legacy forward through environmental stewardship is a privilege. “Being able to contribute to NASA’s mission through environmental compliance feels like the best of both worlds for me,” Morrison said. “It combines my love of science and NASA with my drive to find more efficient ways to operate while protecting this incredible site and everything it represents.” 
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    • By Space Force
      U.S. Space Command hosted Joint Integrated Space Team leaders for the fifth annual JIST Summit here, August 26-27, 2025.

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    • By Space Force
      After a month-long series of exercises across the Indo-Pacific, The Department of the Air Force has concluded its Department-Level Exercises and looks to lessons learned.

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