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 -
RFID Chipped Employees Of Three Square Market
'About a third of the people in Manhattan have replaced their Freedom Card with a radio-frequency chip...' - John Twelve Hawks, 2015.
SkEye Amazing Israeli Gigapixel Drone
'An eye that could not only see, but fly...' - Manly Wade Wellman, 1938.
Cyborg DragonflEye At Your Command
'The dragonfly responded like a toy airplane, taking off and heading east...'
Bat Bot Robotic Flapping-Wing Drone
'The dark birdforms dotted the mountaintops like statues of prehistoric beasts, wings outspread...' - Roger Zelazny, 1980.
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.
Will A Steel Umbrella Stop Russia?
'Everyone was aware that the damned platform was wandering around in its own orbit...'
EVE Artificial Womb For Lambs (For Now)
'In the crimson darkness, stewing warm on their cushion of peritoneum and gorged with blood-surrogate and hormones...'
TIKAD Armed Drone Ready To Fight
'Each a television eye and a sonic stunner...'
Bees Royal Jelly Helps Wounds Heal Faster
'An alien drug... used by an insect race.'
NASA Wants To Make Oxygen On Mars
'They plop down on the Red and if the dust is deep enough ... they burrow in...'
Hackers Insert Malware Into DNA
'They tied the memory to the bloodline and that was their record!'
X2-VelociRoACH Cooperates To Launch Tiny Drones
Little robots cooperating can do big tasks. Eventually.
'Do Not Pay' Chatbots To Replace Law Firm Associates?
'I want my lawyer program.'
MULTI Model Of Star Trek Turbolift
Cool prototype video!
A Look Into The Future Of Spacecraft!
Ever wonder how you look when you enter a new part of a spacecraft?
An 'Ethical Black Box' For Robots?
Explored by science fiction authors.
Dadbot Digital Immortality
'A hardwired ROM cassette replicating a dead man's skills...'
Should We Permit Computers To Create Their Own Language?
'Talk Between Robots radio...'
Breakthrough Starshot Sprites Yearn For Alpha Centauri
'Whoever launched it fired a laser cannon...'
Kino Project Roaming Personal Fashion Robots
'Most of the crew have the tiny imp ride on their shoulder...'
Astronaut Exercise Video, Predicted By SF Writers
'Joe got out the gravity-simulator harnesses.'
More SF in the News Stories
More Beyond Technovelgy science news stories