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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The Swept Wing Flow Test model, known as SWiFT, with pressure sensitive paint applied, sports a pink glow under ultraviolet lights while tested during 2023 in a NASA wind tunnel at Langley Research Center in Virginia.NASA / Dave Bowman Many of us grew up using paint-by-number sets to create beautiful color pictures.
For years now, NASA engineers studying aircraft and rocket designs in wind tunnels have flipped that childhood pastime, using computers to generate images from “numbers-by-paint” – pressure sensitive paint (PSP), that is.
Now, advances in the use of high-speed cameras, supercomputers, and even more sensitive PSP have made this numbers-by-paint process 10,000 times faster while creating engineering visuals with 1,000 times higher resolution.
So, what’s the big difference exactly between the “old” capability in use at NASA for more than a decade and the “new?”
“The key is found by adding a single word in front of PSP, namely ‘unsteady’ pressure sensitive paint, or uPSP,” said E. Lara Lash, an aerospace engineer from NASA’s Ames Research Center in California’s Silicon Valley.
With PSP, NASA researchers study the large-scale effects of relatively smooth air flowing over the wings and body of aircraft. Now with uPSP, they are able to see in finer detail what happens when more turbulent air is present – faster and better than ever before.
In some cases with the new capability, researchers can get their hands on the wind tunnel data they’re looking for within 20 minutes. That’s quick enough to allow engineers to adjust their testing in real time.
Usually, researchers record wind tunnel data and then take it back to their labs to decipher days or weeks later. If they find they need more data, it can take additional weeks or even months to wait in line for another turn in the wind tunnel.
“The result of these improvements provides a data product that is immediately useful to aerodynamic engineers, structural engineers, or engineers from other disciplines,” Lash said.
Robert Pearce, NASA’s associate administrator for aeronautics, who recently saw a demonstration of uPSP-generated data displayed at Ames, hailed the new tool as a national asset that will be available to researchers all over the country.
“It’s a unique NASA innovation that isn’t offered anywhere else,” Pearce said. “It will help us maintain NASA’s world leadership in wind tunnel capabilities.”
A technician sprays unsteady pressure sensitive paint onto the surface of a small model of the Space Launch System in preparation for testing in a NASA wind tunnel.NASA / Dave Bowman How it Works
With both PSP and uPSP, a unique paint is applied to scale models of aircraft or rockets, which are mounted in wind tunnels equipped with specific types of lights and cameras.
When illuminated during tests, the paint’s color brightness changes depending on the levels of pressure the model experiences as currents of air rush by. Darker shades mean higher pressure; lighter shades mean lower pressure.
Cameras capture the brightness intensity and a supercomputer turns that information into a set of numbers representing pressure values, which are made available to engineers to study and glean what truths they can about the vehicle design’s structural integrity.
“Aerodynamic forces can vibrate different parts of the vehicle to different degrees,” Lash said. “Vibrations could damage what the vehicle is carrying or can even lead to the vehicle tearing itself apart. The data we get through this process can help us prevent that.”
Traditionally, pressure readings are taken using sensors connected to little plastic tubes strung through a model’s interior and poking up through small holes in key places, such as along the surface of a wing or the fuselage.
Each point provides a single pressure reading. Engineers must use mathematical models to estimate the pressure values between the individual sensors.
With PSP, there is no need to estimate the numbers. Because the paint covers the entire model, its brightness as seen by the cameras reveals the pressure values over the whole surface.
A four-percent scale model of the Space Launch System rocket is tested in 2017 using unsteady Pressure Sensitive Paint inside the 11-foot by 11-foot Unitary Plan Wind Tunnel at NASA’s Ames Research Center in California.NASA / Dominic Hart Making it Better
The introduction, testing, and availability of uPSP is the result of a successful five-year-long effort, begun in 2019, in which researchers challenged themselves to significantly improve the PSP’s capability with its associated cameras and computers.
The NASA team’s desire was to develop and demonstrate a better process of acquiring, processing, and visualizing data using a properly equipped wind tunnel and supercomputer, then make the tool available at NASA wind tunnels across the country.
The focus during a capability challenge was on NASA’s Unitary Plan Facility’s 11-foot transonic wind tunnel, which the team connected to the nearby NASA Advanced Supercomputing Facility, both located at Ames.
Inside the wind tunnel, a scale model of NASA’s Space Launch System rocket served as the primary test subject during the challenge period.
Now that the agency has completed its Artemis I uncrewed lunar flight test mission, researchers can match the flight-recorded data with the wind tunnel data to see how well reality and predictions compare.
With the capability challenge officially completed at the end of 2024, the uPSP team is planning to deploy it to other wind tunnels and engage with potential users with interests in aeronautics or spaceflight.
“This is a NASA capability that we have, not only for use within the agency, but one that we can offer industry, academia, and other government agencies to come in and do research using these new tools,” Lash said.
NASA’s Aerosciences Evaluation and Test Capabilities portfolio office, an organization managed under the agency’s Aeronautics Research Mission Directorate, oversaw the development of the uPSP capability.
Watch this uPSP Video
About the Author
Jim Banke
Managing Editor/Senior WriterJim Banke is a veteran aviation and aerospace communicator with more than 40 years of experience as a writer, producer, consultant, and project manager based at Cape Canaveral, Florida. He is part of NASA Aeronautics' Strategic Communications Team and is Managing Editor for the Aeronautics topic on the NASA website.
Facebook logo @NASA@NASAaero@NASA_es @NASA@NASAaero@NASA_es Instagram logo @NASA@NASAaero@NASA_es Linkedin logo @NASA Explore More
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Last Updated Jul 03, 2025 EditorJim BankeContactJim Bankejim.banke@nasa.gov Related Terms
Aeronautics Aeronautics Research Mission Directorate Aerosciences Evaluation Test Capabilities Ames Research Center Flight Innovation Glenn Research Center Langley Research Center Transformational Tools Technologies
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By Space Force
A nationwide reading program was created to encourage kindergarten through eighth-grade students to read 12 books during the summer break.
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By NASA
Explore This Section Science Artemis Mission Accomplished! Artemis… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 5 min read
Mission Accomplished! Artemis ROADS III National Challenge Competitors Celebrate their Achievements
The NASA Science Activation program’s Northwest Earth and Space Sciences Pathways (NESSP) team has successfully concluded the 2024–2025 Artemis ROADS III National Challenge, an educational competition that brought real NASA mission objectives to student teams (and reached more than 1,500 learners) across the country. From December 2024 through May 2025, over 300 teams of upper elementary, middle, and high school students from 22 states participated, applying STEM (Science, Technology, Engineering, and Mathematics) skills in exciting and creative ways.
Participants tackled eight Mission Objectives inspired by NASA’s Artemis missions, which aim to return humans to the Moon. Students explored challenges such as:
Designing a water purification system for the Moon inspired by local water cycles Developing a Moon-based agricultural plan based on experimental results Programming a rover to autonomously navigate lunar tunnels Engineering and refining a human-rated water bottle rocket capable of safely returning a “chip-stronaut” to Earth Envisioning their future careers through creative projects like graphic novels or video interviews Exploring NASA’s Artemis program through a new Artemis-themed Lotería game In-person hub events were hosted by Northern Arizona University, Central Washington University, and Montana State University, where teams from Washington, Montana, and Idaho gathered to present their work, collaborate with peers, and experience life on a college campus. Students also had the chance to connect virtually with NASA scientists and engineers through NESSP’s NASA Expert Talks series.
“Artemis ROADS III is NESSP’s eighth ROADS challenge, and I have to say, I think it’s the best one yet. It’s always inspiring to see so many students across the country engage in a truly meaningful STEM experience. I heard from several students and educators that participating in the challenge completely changed their perspective on science and engineering. I believe that’s because this program is designed to let students experience the joy of discovery and invention—driven by both teamwork and personal creativity—that real scientists and engineers love about their work. We also show students the broad range of STEM expertise NASA relies on to plan and carry out a mission like Artemis. Most importantly, it gives them a chance to feel like they are part of the NASA mission, which can be truly transformative.”
– Dr. Darci Snowden, Director, NESSP
NESSP proudly recognizes the following teams for completing all eight Mission Objectives and the Final Challenge:
Space Pringles, 3rd-5th Grade, San Antonio, TX Space Axolotls, 3rd-5th Grade, Roberts, MT TEAM Wild, 6th-8th Grade, Eagle Mountain, UT Pessimistic Penguins, 6th-8th Grade, Eagle Mountain, UT Dwarf Planets, 6th-8th Grade, Eagle Mountain, UT Astronomical Rovers, 6th-8th Grade, Eagle Mountain, UT Cosmic Honeybuns, 6th-8th Grade, Eagle Mountain, UT Houston we have a Problem, 6th-8th Grade, Eagle Mountain, UT FBI Wanted List, 6th-8th Grade, Eagle Mountain, UT Lunar Legion, 6th-8th Grade, San Antonio, TX Artemis Tax-Free Space Stallions, 6th-8th Grade, Egg Harbor, NJ Aquila, 6th-8th Grade, Gooding, ID Space Warriors, 6th-8th Grade, Wapato, WA Team Cygnus, 6th-8th Grade, Red Lodge, MT Maple RocketMen, 6th-8th Grade, Northbrook, IL RGB Hawks, 6th-8th Grade, Sagle, ID The Blue Moon Bigfoots, 6th-8th Grade, Medford, OR W.E.P.Y.C.K., 6th-8th Grade, Roberts, MT Lunar Dawgz, 6th-8th Grade, Safford, AZ ROSEBUD ROCKETEERS, 6th-8th Grade, Rosebud, MT The Cosmic Titans, 6th-8th Grade, Thomson Falls, MT The Chunky Space Monkeys, 6th-8th Grade, Naches, WA ROSEBUD RED ANGUS, 9th-12th Grade, Rosebud, MT Bulky Bisons, 9th-12th Grade, Council Grove, KS The Falling Stars, 9th-12th Grade, Thomson Falls, MT The Roadkillers, 9th-12th Grade, Thomson Falls, MT The Goshawks, 9th-12th Grade, Thomson Falls, MT Sequim Cosmic Catalysts, 9th-12th Grade, Sequim, WA Spuddie Buddies, 9th-12th Grade, Moses Lake, WA Astrocoquí 2, 9th-12th Grade, Mayaguez, PR Big Sky Celestials, 9th-12th Grade, Billings, MT TRYOUTS, 9th-12th Grade, Columbus, MT Cosmonaughts, 9th-12th Grade, Columbus, MT TCCS 114, 9th-12th Grade, Tillamook, OR Marvin’s Mighty Martians, 9th-12th Grade, Simms, TX You can see highlights of these teams’ work in the Virtual Recognition Ceremony video on the NESSP YouTube channel. The presentation also features the teams selected to travel to Kennedy Space Center in August of 2025, the ultimate prize for these future space explorers!
In addition to student engagement, the ROADS program provided professional development workshops and NGSS-aligned classroom resources to support K–12 educators. Teachers are invited to explore these materials and register for the next round of workshops, beginning in August 2025: https://nwessp.org/professional-development-registration.
For more information about NESSP, its programs, partners, and the ROADS National Challenge, visit www.nwessp.org or contact info@nwessp.org.
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NASA’s Northwest Earth and Space Science Pathways’ (NESSP) project is supported by NASA cooperative agreement award number 80NSSC22M0006 and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/
A water bottle rocket launches into the air carrying its precious chip-stronaut cargo. Share
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Last Updated Jun 23, 2025 Editor NASA Science Editorial Team Related Terms
Artemis Biological & Physical Sciences Planetary Science Science Activation Explore More
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By NASA
The book cover for the 2025 edition of the Microgravity Materials Research Researcher’s Guide June 2025 Edition
Most materials are formed from a partially or totally fluid sample, and the transport of heat and mass from the fluid into the solid during solidification inherently influences the formation of the material and its resultant properties. The ISS provides a long-duration microgravity environment for conducting experiments that enables researchers to examine the effects of heat and mass transport on materials processes in the near-absence of gravity-driven forces. The microgravity environment greatly reduces buoyancy-driven convection, hydrostatic pressure, and sedimentation. It can also be advantageous for designing experiments with reduced container interactions. The reduction in these gravity-related sources of heat and mass transport may be taken advantage of to determine how material processes and microstructure formation are affected by gravity-driven and gravity independent sources of heat and mass transfer.
Materials science experiments on the ISS have yielded broad and significant scientific advancements, including contributing to the development of improved mathematical models for predicting material properties during processing on Earth and enabling a better understanding of microstructure formation during solidification towards controlling the material properties of various alloys.
This researcher’s guide provides information on the acceleration environment of the space station and describes facilities available for materials research. Examples of previous microgravity materials research and descriptions of planned research are also provided.
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By European Space Agency
Today, the European Space Agency’s Proba-3 mission unveils its first images of the Sun’s outer atmosphere – the solar corona. The mission’s two satellites, able to fly as a single spacecraft thanks to a suite of onboard positioning technologies, have succeeded in creating their first ‘artificial total solar eclipse’ in orbit. The resulting coronal images demonstrate the potential of formation flying technologies, while delivering invaluable scientific data that will improve our understanding of the Sun and its enigmatic atmosphere.
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