NASA's experimental X-59 supersonic jet returns to California for assembly

The X-59, unwrapped after transport back to Lockheed Martin’s Skunk Works facility in Palmdale, California, ahead of final integration.
The X-59, unwrapped after transport back to Lockheed Martin’s Skunk Works facility in Palmdale, California, ahead of final integration. (Image credit: NASA/Lauren Hughes)

Lockheed Martin engineers just unwrapped a plane-sized package in California.

NASA's new X-59 supersonic jet arrived this month at Lockheed Martin's Skunk Works facility in Palmdale for assembly, ahead of a flight test expected this year.

The airplane's last stop had been Fort Worth, Texas, where it was subject to stress tests since December to take advantage of specialized equipment available in the Lone Star State. (The alternative would have been a costly rebuild of the same equipment in Palmdale.)

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The X-59 is lowered to the ground at Lockheed Martin's Skunk Works facility in Palmdale, California after a crane operation removing it from the back of its transport. (Image credit: NASA/Lauren Hughes)

"With its return to California, the X-59 will undergo further ground tests as it approaches full completion of its development and continues to make progress on its way to first flight," NASA said in an April 18 statement, shortly after the aircraft's arrival.

The X-59 represents NASA's latest effort to reduce the sonic booms associated with supersonic planes. While such vehicles move swiftly in the air, the cost is vibrations and noise as the airplanes exceed the speed of sound. At worst, the sound waves may produce damage or shatter glass.

This meant that past supersonic flyers, like the iconic Concorde that retired in 2003 after a generation of service, needed to be very careful about where they flew. Its maximum sound reached 105 decibels, about as loud as a nearby thunderstrike

By contrast, the X-59, NASA has said previously, should be no more noisy than a car door slamming 20 feet (6 meters) away. 

The X-59 is wrapped for protection during a crane operation at Lockheed Martin's Skunk Works facility in Palmdale, California. (Image credit: NASA/Lauren Hughes)

Assuming the flight schedule goes to plan, NASA aims to try its X-59 over communities in the United States starting in 2024.

"NASA's goal is to collect and provide data to regulators that may finally solve the sonic boom challenge and open the future to commercial supersonic flight over land, reducing flight times drastically," the agency said in the same statement.

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Elizabeth Howell
Staff Writer, Spaceflight

Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for for 10 years before joining full-time. Elizabeth's reporting includes multiple exclusives with the White House and Office of the Vice-President of the United States, an exclusive conversation with aspiring space tourist (and NSYNC bassist) Lance Bass, speaking several times with the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, "Why Am I Taller?", is co-written with astronaut Dave Williams. Elizabeth holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, a Bachelor of Journalism from Canada's Carleton University and a Bachelor of History from Canada's Athabasca University. Elizabeth is also a post-secondary instructor in communications and science at several institutions since 2015; her experience includes developing and teaching an astronomy course at Canada's Algonquin College (with Indigenous content as well) to more than 1,000 students since 2020. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday. Mastodon: