Untethered Drone Gets Wireless Power
Wireless power is the only thing keeping this drone up in the air, thanks to the efforts of Imperial College boffins.
(Imperial College drone, flying without a battery or tether)
The researchers also built a separate transmitting platform that uses a circuit board, power source and copper coil of its own to produce a magnetic field. When placed near that platform, the drone's coil acts as a receiving antenna for that magnetic field, inducing an alternating electrical current. The quadcopter's rejigged electronics then convert that alternating current to direct current, which is used to power its flight.
Known as inductive coupling, the technique has been around since the time of Nicola Tesla. According to Imperial College, however, this is the first time that it has been used to power a flying vehicle. While it currently only works if the drone is within 10 cm (3.9 in) of the transmitter, it is hoped that the range can be greatly increased.
The first use of radiant power, or the wireless transmission of power, was arranged by the matchless inventor Nikola Tesla. The largest Tesla Coil ever built (the 'Magnifying Transmitter') could generate up to 300,000 watts of power, and produce a bolt of lightning 130 feet long. Tesla actually managed to successfully transmit about 30 to 50 thousand watts of power without wires using the coil.
However, it was left to Robert Heinlein writing in his classic 1942 novella Waldo to really set imagination free and imagine what you could do if you didn't need to carry some sort of stored power in your flying vehicle.
"...We'll use my 'broomstick'".
Grimes let his eyes run over his friend's fusiformed little speedster. Its body was as nearly invisible as the plastic industry could achieve. A surface layer, two molecules thick, gave it a refractive index sensibly identical with that of air. When perfectly clean it was very difficult to see.
At the moment it had picked up enough casual dust and water vapour to be faintly seen - a ghost of a soap bubble of a ship.
Running down the middle, clearly visible through the walls, was the only metal part of the ship - the shaft, or, more properly, the axis core, and the spreading sheaf of deKalb receptors at its terminus. The appearance was enough like a giant witch's broom to justify the nickname. Since the saddles, of transparent plastic, were mounted tandem oven the shaft so that the metal rod passed between the legs of the pilot and passengers, the nickname was doubly apt.
(Read more about Heinlein's broomstick speeder)
Scroll down for more stories in the same category. (Story submitted 10/15/2016)
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 ( 0 )
Related News Stories -
ODYSSEUS Solar-Powered Stratospheric Plane Flies Forever
'The planes flew continuously, twenty-four hours a day...' - EB White, 1950.
Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.
Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.
Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.' - Larry Niven, 1970.
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.
Wound Healing With Wearable Nanogenerators
'... forcing the energy transfer which allowed him to ... erase the other internal-external damage.'
Flying Dragon Robot Transforms In Mid-Air
Terrific prototype video.
Negative Matter Fluid Theorized In New Paper
'Of course, being negative matter, when you push it, it comes toward you..'
Grow Structures Upon Planetfall - Myco-Architecture
'They'll also start pulling in gases and liquids from the local atmosphere...'
MXene Hydrogel Skin For Robots Flexes And Senses
'The plastex swam and whirled like boiling toothpaste...'
EXPLORER, The First Total-Body Scanner
'The object is built up of an infinite series of plane layers, at the focus of the ray...'
UK Police AI To Stop Criminals Before They Strike
'... the computing mechanisms that studied and restructured the incoming material.'
Sonitus Audio Interface Positioned Beyond The Noise
'... an instrument having relatively small bit pieces adapted to be gripped between the teeth.'
Volvo's Self-Driving Mining Trucks
'A procession of automatic ore carts was racing over the bleak slag'
Audi Pop.Up Autonomous Electric Flying Car
'The cab was an egg-shaped bubble of light metals and plastics...'
Music Not Impossible (MNI) Vibrotactile Wearable Experience
Don't you want to experience the 'feely' effects?
Chinese Face Recognition Mistakes Bus Ad For Jaywalker
'... the imprint of her image on the telephoto cell.'
A Look Back At Apollo's Emergency Escape Vehicle
'A simple mechanism... it drove the iron ball through space like a ship.'
InMotion Glide 3 Electric Unicycle For The Last Mile
'...gyro-stabilized on a single wheel.'
China's Social Credit System - A Facebook-1984 Mashup
'Prestige, face, mana, repute, glory: the Sirenese word is strakh.'
Musk Declares Tesla Supercharger Capacity Will Double By Next Year
'Recharge the batteries... in almost every town and village...'
More SF in the News Stories
More Beyond Technovelgy science news stories