Une équipe japonaise a-t-elle trouvé la clé des voyages interstellaires ? Un alliage à mémoire de forme performant à -170 °C pourrait transformer l'exploration spatiale.
https://www.greenworks.lu/auto-moto/la-percee-japonaise-qui-revolutionne-lexploration-spatiale-une-nouvelle-technologie-pour-atteindre-les-confins-de-lunivers/599085/
#Space #Innovation #AerospaceEngineering #ShapeMemoryAlloy #JAXA #CryogenicMaterials #QuantumPropulsion
La percée japonaise qui révolutionne l’exploration spatiale : une nouvelle technologie pour atteindr ...

L'exploration spatiale est en pleine effervescence et les avancées technologiques s'accélèrent. Alors que l'humanité rêve de conquérir de nouveaux horizons, une découverte japonaise pourrait bien redéfinir les voyages interstellaires. Comment cette innovation pourrait-elle transformer notre compréhension de l'univers et ouvrir la voie à des missions audacieuses vers d'autres planètes ? Depuis des siècles, l'homme s'interroge

GreenWorks

Washington State University researchers have created the world's smallest, lightest, and fastest micro-robots, resembling a mini-bug and a water strider. Weighing eight and 55 milligrams, these micro-robots move at approximately six millimeters per second.

They feature tiny, less than a milligram actuators made of shape memory alloy (SMA) for movement without traditional motors. SMA technology allows efficient and energy-saving operation, requiring minimal electricity or heat.

The robots demonstrate remarkable agility and efficiency, with potential applications in artificial pollination, search and rescue, environmental monitoring, and robotic-assisted surgery. Future enhancements may include studying natural insect movements for optimization.

#MicroRobots #Robotics #TechInnovation #WSUResearch #ShapeMemoryAlloy #Miniaturization #ArtificialPollination #SurgicalRobotics #EnvironmentalMonitoring #BioinspiredTech

Nitinol Is A Material We Need To Be Playing With More

Another Kickstarter, another opportunity for people to get mad at delayed and poorly functioning (if delivered at all) gadgets. But the real star of the show here is NiTinol, a shape metal alloy co…

Hackaday
@georgetakei We can thank the Alien's for bringing technology that allows us to make glasses frames that snap back into shape #nitinol #shapememoryalloy #sma https://www.bookpassage.com/book/9780994282637
Roswell Revealed: The New Scientific Breakthrough into the Controversial UFO Crash of 1947 (U.S. English / Update 2016) (Paperback)

Did you know that a dark-grey nickel-titanium (NiTi) shape-memory alloy known as nitinol was an integral part of the secret USAF work into understanding the Roswell foil in July 1947?

Book Passage

Quiet Wings, with Shape Memory Alloy

It's a fact of operating an aircraft, that the make noise. If you're an aviator you might want to quiet your craft to avoid annoying people nearby, or you might even want to operate in stealth mode. It turns out that there are different sources of noise on a plane depending upon the phase of flight. A NASA study found that when landing, a gap between the wing and leading edge slats causes air to cavitate causing unnecessary noise. Blocking that hole would allow for quieter landings, but there was no material suitable for both normal flight and the landing. That is, until Texas A&M researchers devised a way to use a shape memory alloy to do it.

In addition to two different shape memory alloy configurations, the study looks at a more conventional fiberglass composite, although this would only work for a limited number of wing configurations.

Quite a bit of the paper is pretty high-octane math simulations, but if you are serious about quieting down your next winged drone design it might be worth wading through.

We don't see many shape memory projects, but the technology is accessible. We recently saw a clever use of leading-edge slats in a scrappy experimental aircraft.

#dronehacks #aircraft #shapememoryalloy #wing

Quiet Wings, With Shape Memory Alloy

It’s a fact of operating an aircraft, that the make noise. If you’re an aviator you might want to quiet your craft to avoid annoying people nearby, or you might even want to operate in …

Hackaday