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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA/Quincy Eggert Upside down can be right side up. That’s what NASA researchers determined for tests of an efficient wing concept that could be part of the agency’s answer to making future aircraft sustainable.
Research from NASA’s Advanced Air Transport Technology project involving a 10-foot model could help NASA engineers validate the concept of the Transonic Truss-Braced Wing (TTBW), an aircraft using long, thin wings stabilized by diagonal struts. The TTBW concept’s efficient wings add lift and could result in reduced fuel use and emissions for future commercial single-aisle aircraft. A team at the Flight Loads Laboratory at NASA’s Armstrong Flight Research Center in Edwards, California, are using the model, called the Mock Truss-Braced Wing, to verify the concept and their testing methods.
The model wing and the strut have instruments installed to measure strain, then attached to a rigid vertical test frame. Wire hanging from an overhead portion of the frame stabilizes the model wing for tests. For these tests, researchers chose to mount the 10-foot-long aluminum wing upside down, adding weights to apply stress. The upside-down orientation allows gravity to simulate the lift a wing would experience in flight.
Researchers test a 10-foot Mock Truss-Braced Wing at NASA’s Armstrong Flight Research Center in Edwards, California. A view from above shows the test structure, the wing, and the strut. The aircraft concept involves a wing braced on an aircraft using diagonal struts that also add lift and could result in significantly improved aerodynamics.NASA/Steve Freeman “A strut reduces the structure needed on the main wing, and the result is less structural weight, and a thinner wing,” said Frank Pena, NASA mock wing test director. “In this case, the test measured the reaction forces at the base of the main wing and at the base of the strut. There is a certain amount of load sharing between the wing and the strut, and we are trying to measure how much of the load stays in the main wing and how much is transferred to the strut.”
To collect those measurements, the team added weights one at a time to the wing and the truss. In another series of tests, engineers tapped the wing structure with an instrumented hammer in key locations, monitoring the results with sensors.
“The structure has natural frequencies it wants to vibrate at depending on its stiffness and mass,” said Ben Park, NASA mock wing ground vibration test director. “Understanding the wing’s frequencies, where they are and how they respond, are key to being able to predict how the wing will respond in flight.”
Researchers test a 10-foot Mock Truss-Braced Wing at NASA’s Armstrong Flight Research Center in Edwards, California. Charlie Eloff, left, and Lucas Oramas add weight to the test wing to apply stress used to determine its limits. The aircraft concept involves a wing braced on an aircraft using diagonal struts that also add lift and could result in significantly improved aerodynamics.NASA/Steve Freeman Adding weights to the wingtip, tapping the structure with a hammer, and collecting the vibration response is an unusual testing method because it adds complexity, Park said. The process is worth it, he said, if it provides the data engineers are seeking. The tests are also unique because NASA Armstrong designed, built, and assembled the wing, strut, and test fixture, and conducted the tests.
With the successful loads calibration and vibration tests nearly complete on the 10-foot wing, the NASA Armstrong Flight Loads Laboratory team is working on designing a system and hardware for testing a 15-foot model made from graphite-epoxy composite. The Advanced Air Transport Technology TTBW team at NASA’s Langley Research Center in Hampton, Virginia, is designing and constructing the model, which is called the Structural Wing Experiment Evaluating Truss-bracing.
The larger wing model will be built with a structural design that will more closely resembles what could potentially fly on a future commercial aircraft. The goals of these tests are to calibrate predictions with measured strain data and learn how to test novel aircraft structures such as the TTBW concept.
NASA’s Advanced Air Transport Technology project falls under NASA’s Advanced Air Vehicles Program, which evaluates and develops technologies for new aircraft systems and explores promising air travel concepts.
Researchers test a 10-foot Mock Truss-Braced Wing at NASA’s Armstrong Flight Research Center in Edwards, California. Frank Pena, test director, checks the mock wing. The aircraft concept involves a wing braced on an aircraft using diagonal struts that also add lift and could result in significantly improved aerodynamics.NASA/Steve Freeman Researchers test a 10-foot Mock Truss-Braced Wing at NASA’s Armstrong Flight Research Center in Edwards, California. Samson Truong, from left, and Ben Park, NASA mock wing ground vibration test director, prepare for a vibration test. The aircraft concept involves a wing braced on an aircraft using diagonal struts that also add lift and could result in significantly improved aerodynamics.NASA/Steve Freeman Researchers test a 10-foot Mock Truss-Braced Wing at NASA’s Armstrong Flight Research Center in Edwards, California. Ben Park, NASA mock wing ground vibration test director, taps the wing structure with an instrumented hammer in key locations and sensors monitor the results. The aircraft concept involves a wing braced on an aircraft using diagonal struts that also add lift and could result in significantly improved aerodynamics.NASA/Steve Freeman Share
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Last Updated Dec 04, 2024 EditorDede DiniusContactJay Levinejay.levine-1@nasa.govLocationArmstrong Flight Research Center Related Terms
Armstrong Flight Research Center Advanced Air Transport Technology Advanced Air Vehicles Program Aeronautics Aeronautics Research Mission Directorate Flight Innovation Green Aviation Tech Sustainable Aviation Explore More
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By NASA
Una luna gibosa creciente se eleva sobre el resplandor azul del horizonte terrestre mientras la Estación Espacial Internacional orbitaba a 264 millas sobre el Océano Índico el 13 de Noviembre de 2024.Crédito: NASA Read this release in English here.
El administrador de la NASA, Bill Nelson, y otros directivos darán una rueda de prensa el jueves 5 de diciembre a la 1 p.m. EST (hora del este de EE.UU.) en la sede de la agencia en Washington para proporcionar información sobre la campaña Artemis de la agencia.
El evento para los medios de comunicación estará disponible en NASA+. Aprende a transmitir contenidos de la NASA a través de diversas plataformas, incluidas las redes sociales.
Los participantes incluyen:
Bill Nelson, administrador de la NASA Pam Melroy, administradora adjunta de la NASA Jim Free, administrador asociado de la NASA Catherine Koerner, administradora asociada, Dirección de Misión de Desarrollo de Sistemas de Exploración, Sede de la NASA Amit Kshatriya, administrador asociado adjunto, Oficina del Programa de la Luna a Marte, Dirección de Misión de Desarrollo de Sistemas de Exploración Reid Wiseman, astronauta de la NASA y comandante del Artemis II Los medios de comunicación interesados en participar en persona o por teléfono deben confirmar su asistencia antes de las 11 a.m. EST del 5 de diciembre a: hq-media@mail.nasa.gov. La conferencia de prensa tendrá lugar en el Auditorio James E. Webb de la sede central de la NASA, en el edificio Mary W. Jackson, 300 E St. SW, Washington. La política de acreditación de medios de comunicación de la NASA está disponible en línea (en inglés).
A través de la campaña Artemis, la agencia establecerá una presencia a largo plazo en la Luna para la exploración científica conjuntamente con nuestros socios comerciales e internacionales, aprenderá a vivir y trabajar lejos de nuestro hogar y se preparará para la futura exploración humana de Marte. El cohete Sistema de Lanzamiento Espacial de la NASA, los sistemas terrestres de exploración y la nave espacial Orion, junto con el sistema de aterrizaje humano, los trajes espaciales de próxima generación, la estación espacial lunar, Gateway y los futuros vehículos exploradores son la base de la NASA para la exploración del espacio profundo.
Para más información sobre Artemis (en inglés), visita:
https://www.nasa.gov/artemis
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Meira Bernstein / Rachel Kraft / María José Viñas
Sede, Washington
202-358-1600
meira.b.bernstein@nasa.gov / rachel.h.kraft@nasa.gov / maria-jose.vinasgarcia@nasa.gov
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Last Updated Dec 04, 2024 LocationNASA Headquarters Related Terms
Missions Artemis Exploration Systems Development Mission Directorate NASA Headquarters View the full article
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By NASA
A waxing gibbous moon rises over the blue glow of Earth’s horizon as the International Space Station orbited 264 miles above the Indian Ocean on Nov. 13, 2024.Credit: NASA NASA Administrator Bill Nelson and leadership will hold a news conference at 1 p.m. EST, Thursday, Dec. 5, at the agency’s headquarters in Washington to provide a briefing about the agency’s Artemis campaign.
Watch the media event on NASA+. Learn how to stream NASA content through a variety of platforms, including social media.
Participants include:
NASA Administrator Bill Nelson NASA Deputy Administrator Pam Melroy NASA Associate Administrator Jim Free Catherine Koerner, associate administrator, Exploration Systems Development Mission Directorate, NASA Headquarters Amit Kshatriya, deputy associate administrator, Moon to Mars Program Office, Exploration Systems Development Mission Directorate Reid Wiseman, NASA astronaut and Artemis II commander Media interested in participating in-person or by phone must RSVP by 11 a.m. on Dec. 5 to: hq-media@mail.nasa.gov. The news conference will take place in the James E. Webb Auditorium at NASA Headquarters in the Mary W. Jackson building, 300 E St. SW, Washington. A copy of NASA’s media accreditation policy is online.
Through the Artemis campaign, the agency will establish a long-term presence at the Moon for scientific exploration with our commercial and international partners, learn how to live and work away from home, and prepare for future human exploration of Mars. NASA’s SLS (Space Launch System) rocket, exploration ground systems, and Orion spacecraft, along with the human landing systems, next-generation spacesuits, Gateway lunar space station, and future rovers are NASA’s foundation for deep space exploration.
For more information about Artemis, visit:
https://www.nasa.gov/artemis
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Meira Bernstein / Rachel Kraft
Headquarters, Washington
202-358-1600
meira.b.bernstein@nasa.gov / rachel.h.kraft@nasa.gov
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Last Updated Dec 04, 2024 LocationNASA Headquarters Related Terms
Missions Artemis Exploration Systems Development Mission Directorate NASA Headquarters View the full article
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By Space Force
With the application window for Space Force special duty assignments for calendar year 2025 now open, Guardians have the opportunity to expand the breadth and depth of their skills while gaining knowledge of another part of the Space Force enterprise outside their normal duties.
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