Robots can be amazing tools for search-and-rescue missions and environmental studies, but eventually they must return to a base to recharge their batteries and upload their data. That can be a challenge if your robot is an autonomous underwater vehicle (AUV) exploring deep ocean waters.
Now, a Purdue University team has created a mobile docking system for AUVs, enabling them to perform longer tasks without the need for human intervention.
The team also has published papers on ways to adapt this docking system for AUVs that will explore extraterrestrial lakes, such as those of Jupiter and Saturn’s moons.
“My research focuses on persistent operation of robots in challenging environments,” said Nina Mahmoudian, an associate professor of mechanical engineering. “And there’s no more challenging environment than underwater.”
Once a marine robot submerges in water, it loses the ability to transmit and receive radio signals, including GPS data. Some may use acoustic
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Sep 28, 2020 (The Expresswire) —
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NASA is developing new spacesuits for its planned missions to the moon.
Astronauts are testing the spacesuits in a giant pool: the Neutral Buoyancy Lab in Houston, Texas.
The pool mimics the feeling of microgravity and serves as a training ground for astronauts learning how to do spacewalks.
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NASA is racing to get astronauts back to the moon in 2024. But before that can happen, the agency needs to perfect its spacesuits.
NASA has already designed the new suits that astronauts will wear on its Artemis moon missions. Now it’s testing the suits to make sure people can actually walk in them and perform complex tasks, like handling tools and checking equipment.
Many of those tests happen underwater.
At NASA’s Neutral Buoyancy Lab in Houston, Texas, astronauts-in-training wear spacesuits in a giant pool to simulate what they’ll feel like in microgravity.
Marine biologists are astonished after a Cuvier’s beaked whale held its breath for nearly four hours during a deep dive. The unexpected observation shows there’s much to learn about these medium-sized whales.
Scientists from Duke University and the Cascadia Research Collective recorded the unbelievable dive during field observations off the coast of Cape Hatteras, North Carolina, in 2017. In the first of two epic dives, the Cuvier beaked whale, wearing tag ZcTag066, stayed underwater for nearly three hours. A week later, the whale outdid itself, holding its breath for a bewildering three hours and 42 minutes.
“We didn’t believe it at first, because these are mammals after all, and any mammal spending that long underwater just seemed incredible,” Nicola Quick, the lead author of the new study and a biologist at Duke University, said