Robo-Bat Has Shape Memory Alloy Joints
A robo-bat with shape memory alloy jointed limbs and smart material alloy muscles is being built by North Carolina State University researchers.
Gheorghe Bunget, a doctoral student in mechanical engineering at NC State, and his advisor Dr. Stefan Seelecke looked to nature [for inspiration]. "We are trying to mimic nature as closely as possible," Seelecke says, "because it is very efficient. And, at the MAV scale, nature tells us that flapping flight – like that of the bat – is the most effective."
According to the NC State press release, the fully assembled robotic 'bat' skeleton rests easily in the palm of your hand and, at less than 6 grams, feels as light as a feather.
(Robo-bat with shape memory alloy joints)
The research team is using a special shape memory alloy that is super-elastic for the joints of the robo-bat. The material offers a full range of motion, but always returns to its original gliding position. Smart materials are also being used for the 'muscles' on the robotic bat. Seelecke explains:
"We're using an alloy that responds to the heat from an electric current. That heat actuates micro-scale wires the size of a human hair, making them contract like 'metal muscles.' During the contraction, the powerful muscle wires also change their electric resistance, which can be easily measured, thus providing simultaneous action and sensory input. This dual functionality will help cut down on the robo-bat's weight, and allow the robot to respond quickly to changing conditions – such as a gust of wind – as perfectly as a real bat."
It's interesting that science fiction writers also chose to mimic nature in the earliest descriptions of robotic micro air vehicles - MAVs. I was thinking in particular about the extraordinary Scarab flying insect robot from Raymond Z. Gallun's The Scarab, published in Astounding Stories magazine in 1936.
The Scarab rubbed its hind legs together, as flies will do when at rest. Then, apparently satisfied that it was in condition, it unfolded the coleoptera-like plates over its wings. With a buzz that any uninformed person would have mistaken for that of a beetle, it started out on its journey.
(Read more about the scarab flying insect robot)
For a different take on the idea of a robotic bat by a different research team, take a look at the COM-BAT Robotic 'Bat' On Order From UM . The development process for this tiny MAV emphasizes the senses of a robotic bat.
Update: 21-Oct-2016: The first time I read about the idea of a shape memory alloy was in Samuel R. Delany's 1966 novel Babel-17; see the entry for tensile memory polarized matter. End update.
From Robo-Bats With Metal Muscles May Be Next Generation of Remote Control Flyers (press release) via Physorg.
Scroll down for more stories in the same category. (Story submitted 7/8/2009)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 1 )
Related News Stories -
IJOP Integrated Joint Operations Platform China's Minority Report?
'All day long the idiots babbled, imprisoned in their special high-backed chairs...'
Kuri Robot Roams Your Home, Taking Pictures
'Small devices with cameras and sound equipment which could move freely...'
Nuclear Drones Could Fly For Years
'I sent my eyes on their rounds and tended my gallery of one hundred-thirty changing pictures...' - Roger Zelazny, 1966.
China's Drone Fleet Flies In Formation
'Programmed to hang... in a hexagonal grid pattern.' - Neal Stephenson, 1995.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Ontario Starts Guaranteed Minimum Income
'Earned by just being born.'
Is There Life In Outer Space? Will We Recognize It?
'The antennae of the Life Detector atop the OP swept back and forth...'
Space Traumapod For Surgery In Spacecraft
' It was a ... coffin, form-fitted to Nessus himself...'
Tesla Augmented Reality Hypercard
'The hypercard is an avatar of sorts.'
A Space Ship On My Back
''Darn clever, these suits,' he murmured.'
Biomind AI Doctor Mops Floor With Human Doctors
'My aim was just not to lose by too much.' - Human Physician participant.
Fuli Bad Dog Robot Is 'Auspicious Raccoon Dog' Bot
Bad dog, Fuli. Bad dog.
Las Vegas Humans Ready To Strike Over Robots
'A worker replaced by a nubot... had to be compensated.'
You'll Regrow That Limb, One Day
'... forcing the energy transfer which allowed him to regrow his lost fingers.'
Elon Musk Seeks To Create 1941 Heinlein Speedster
'The car surged and lifted, clearing its top by a negligible margin.'
Somnox Sleep Robot - Your Sleepytime Cuddlebot
Science fiction authors are serious about sleep, too.
Real-Life Macau or Ghost In The Shell
Art imitates life imitates art.
Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.'
First 3D Printed Human Corneas From Stem Cells
Just what we need! Lots of spare parts.
VirtualHome: Teaching Robots To Do Chores Around The House
'Just what did I want Flexible Frank to do? - any work a human being does around a house.'
Messaging Extraterrestrial Intelligence (METI) Workshop
SF writers have thought about this since the 19th century.
More SF in the News Stories
More Beyond Technovelgy science news stories