Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Laser Thruster 'Tractor Beams' For Space Junk
The space near Earth is full of junk - if only we had some science-fictional tractor beams to pull that stuff out of the way!
As it turns out, space-flight engineer John Sinko of Nagoya University, Japan has a suggestion based on real science. A laser thruster could be used to fire laser pulses into a mass of solid propellant attached to an offending piece of space junk. The resulting force could push the object, altering its orbit and plunging it into the Earth's atmosphere, burning it up.
(Satellite laser thruster diagram)
[Sinko] has designed a series of laser thrusters that can be activated in this way. A spacecraft fitted with a laser would fire a low-power beam at a thruster fitted on another craft to attract, repel or steer it in another direction. Pushing a spacecraft away is a relatively simple matter, but more complex designs using mirrors are needed to use a beam to tug one towards the laser (see diagram above).Combining those designs could allow full control in any direction, says Sinko. He imagines spacecraft being fitted with remotely operated thrusters before launch, so that once they reach the end of their lives it is simple to alter their orbit or even
Science fiction writers have been trying desperately to point out this problem and provide solutions. For example, how about an interplanetary garbage scow? Take a look at the 1977 television series Quark. This comedy, created by legendary writer Buck Henry, described the activities of the United Galaxies Sanitation Patrol Cruiser.
(Richard Benjamin and the Barnstable twins)
Richard Benjamin played Adam Quark, who worked to clean up trash in space. He is ably assisted by the Bettys, played by the Doublemint twins (Cyb and Patricia Barnstable).
In his 1978 novel The Fountains of Paradise, Arthur C. Clarke uses Operation Cleanup to make sure that low earth orbit is clear of debris for the newly constructed space elevator.
Fans may also recall Planetes, an anime series published by Makoto Yakimura in Japan starting in 1999. The series follows a team of debris cleaners who clear space junk from flight paths.
Planetes cover art
Read New Scientist for more details on the laser thruster.
Scroll down for more stories in the same category. (Story submitted 5/3/2010)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 5 )
Related News Stories - (" Space Tech ")
Will Space Stations Have Large Interior Spaces Again?
'They filed clumsily into the battleroom, like children in a swimming pool for the first time, clinging to the handholds along the side.' - Orson Scott Card, 1985.
Reflect Orbital Offers 'Sunlight on Demand' And Light Pollution
'I don't have to tell you about the seven two-mile-diameter orbital mirrors...'
Chrysalis Generation Ship to Alpha Centauri
'This was their world, their planet —
this swift-traveling, yet seemingly moveless vessel.' - Nat Schachner, 1934
The First Space Warship For Space Force
'Each of the electrical ships carried about twenty men...' - Garrett P. Serviss, 1898.
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Natural Gait With Prosthetic Connected To Nervous System
'The leg was to function, in a way, as a servo-mechanism operated by Larry’s brain...'
Woman Marries Computer, Vonnegut's Dream Comes True
'Men are made of protoplasm... Lasts forever.'
Spidery 'Walk Me' Toyota Autonomous Wheel Chair Like Star Wars
Walk along with the emperor.
Dancing Robots Taught Dance Moves
'A clockwork figure would be the thing for you...'
Proof Of Robothood - Not A Person
'Who are you people? - Show 'em.'
Indonesian Clans Battle
'The observation vehicle was of that peculiar variety used in conveying a large number of people across rough terrain.'
The 'Last Mile' In China Crowded With Delivery Robots
Yes, it's a delivery robot. On wheels.
Tornyol Microdrone Kills Mosquitoes
'The real border was defended by... a swarm of quasi-independent aerostats.'
PLATO Spacecraft, Hunter Of Habitable Planets, Now Ready
'I ... set my automatic astronomical instruments to searching for a habitable planet.'
Factory Humanoid Robots Built By Humanoid Robots
'...haven't you a section of the factory where only robot labor is employed?'
iPhone Air Fulfils Jobs' Promise From 2007 - A Giant Screen!
'... oblongs were all over the floor and surfaces.'
ChatGPT Now Participates in Group Chats
'...the city was their laboratory in human psychology.'
iPhone Pocket All Sold Out!
'A long, strong, slender net...'
Did The Yautja Have These First?
What a marvel of ingenuity the little device was!
Jetson ONE Air Races Begin, Can Air Polo Be Far Behind?
'If you're one of those rarities who haven't attended a rocket-polo "carnage", let me tell you it's a colorful affair.'
Will Space Stations Have Large Interior Spaces Again?
'They filed clumsily into the battleroom, like children in a swimming pool for the first time, clinging to the handholds along the side.'
