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Old 01-15-2014, 11:02 PM  
listopencil listopencil is offline
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NYU Drone Flys Like A Swimming Jellyfish




Scientists create winged-jellyfish drone…and it's beautiful

Researchers from New York University recently unveiled a drone that "mimics the movements of swimming jellyfish." Designed by Leif Ristroph, an applied mathematician at NYU, the drone was presented at a fluid dynamics conference in Pittsburgh. It's tiny and adorable and I want one.
Ristroph wanted to design a drone based on insect wings. However, instead of having the wings sticking out of the side, he had them point downward. When they flapped back and forth it was enough to lift the robot into the air.
Insects have built-in sensors and feedback that help them stay upright, he explained. Drones based on insect wings need the same support. But motors, sensors, and batteries add weight, which becomes problematic for people looking to design smaller and smaller drones. "I wanted to design something that had stability without the stability-sensor needs."
"One of the important things to keep in mind is that whether it's an insect, a bird, a fish, or a jellyfish, they're all playing by essentially the same rules in physics," said Brad Gemmell, a University of Texas, Austin, ecologist who studies how animals move through the water. Moving through air is similar to moving through water. And regardless of an organism's shape, if it wants to propel itself along, it has to generate thrust...Jellyfish move in essentially two ways. For smaller species that are a few centimeters in size, they use jet propulsion, he said. The animal contracts its umbrella-shaped bell, squeezing out water behind it and creating a doughnut-shaped ring of water called a vortex. That vortex pushes the jellyfish forward, said Gemmell. Larger jellyfish add a movement called rowing to their jet-propulsion capabilities. Rowing is when the loose edge of their bell flaps around, creating additional vortices that help to generate thrust. Those loose edges almost push against the fluid like a rower pushes an oar against the water, Gemmell explained.
Ristroph is now focused on improving his drone and creating more creative designs for drones. "I'm personally interested in schemes that no one in nature or the engineering laboratory has thought of," Ristroph said. [National Geographic]


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Old 01-15-2014, 11:29 PM   #2
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High Tech is Sorcery and the people who are really powerful are literally telling people to commit crimes using the psychic interspace created by the WWW and Wireless. They are controlling peoples actions like drones . The two things are deeply intertwined. The more man's brain interfaces with machines the creepier it gets. They use brains separate from a human body in a supercomputer and you have The Image of the Beast. The military has been doing this since the 50s
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Old 01-16-2014, 12:02 AM   #3
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Old 01-16-2014, 12:12 AM   #4
Mr. Laz Mr. Laz is offline
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wouldn't a windy day just **** that shit up?
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Old 01-16-2014, 12:13 AM   #5
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Originally Posted by listopencil View Post
Scientists create winged-jellyfish drone…and it's beautiful
When the government assassinates me, this will make it much more enjoyable. It's like I'm almost looking forward to it now.
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Old 01-16-2014, 12:29 AM   #6
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When the government assassinates me, this will make it much more enjoyable. It's like I'm almost looking forward to it now.
We can all wish for a beautiful, poetic death.
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Old 01-16-2014, 04:01 AM   #7
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Originally Posted by Mr. Laz View Post
wouldn't a windy day just **** that shit up?
Yes. But picture this as a private citizen. See the movie with Tom Cruise called oblivion and those drones?

well drones are getting easier to fly and cheaper. Now add the sniper rifle from Texas that gives almost 100% accuracy. You could attach another similar rifle with less recoil and same computer tracking for a serious threat.
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Old 01-16-2014, 08:27 AM   #8
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Old 01-16-2014, 08:35 AM   #9
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Originally Posted by Mr. Laz View Post
wouldn't a windy day just **** that shit up?
So you're saying that those of us living in Kansas are safe from the drone invasion?
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Old 01-16-2014, 09:04 AM   #10
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So you're saying that those of us living in Kansas are safe from the drone invasion?
Not if Texas is the target.
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Old 01-16-2014, 09:08 AM   #11
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Not if Texas is the target.
Texas? Holy dog shit! Only steers and queers come from Texas. /Gunny Hartman
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Old 01-16-2014, 09:18 AM   #12
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This is our universities are doing? Producing prototype drones for indoor use only?
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Old 01-16-2014, 09:27 AM   #13
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I like these drones more.
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Old 01-16-2014, 10:14 AM   #14
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Texas? Holy dog shit! Only steers and queers come from Texas. /Gunny Hartman
South wind.
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Old 01-16-2014, 10:18 AM   #15
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