![](../graphics/MCSpacerLeft.gif) |
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
|
![](../graphics/MCSpacerNearLeft.gif) |
Solar Sail Craft Need Laminated Mouse Brains
Navigation computers for spacecraft with solar sails will need to consider relativistic effects, according to a new paper published by Roman Ya. Kezerashvili and Justin F. Vazquez-Poritz.
Responding to an increasing demand for navigational accuracy, we consider a number of general relativistic effects on the escape trajectories of solar sails. For missions as far as 2,550 AU, these effects can deflect a solar sail by as much as one million kilometers. We also find that frame dragging due to the slow rotation of the sun can deflect a solar sail by more than one thousand kilometers.
For example, a solar sail deployed at 0.01 AU (astronomical units - about 93 million miles) can be deflected due to the curvature of spacetime near the sun, while the kinematic effects of special relativity contribute to a lesser degree. Lesser effects include redshifting of sunlight and the slowing down of the passage of time near the sun.
Obviously, we're going to need a very fast and competent computer to act as the pilot - and for that, we're going to need laminated mouse brains.
In his 1962 classic Think Blue, Count Two, Cordwainer Smith writes about special computing devices for solar sail craft on long voyages between the stars.
...Tiga-belax came in, very cheerful indeed... In his right hand there was a black plastic cube wih shimmering contact-points gleaming on its sides. The two technicians greeted him politely.
"I've got that beautiful child taken care of... I've used a mouse-brain."
"If it's frozen," said the first technician, "we won't be able to put in the computer..."
"This brain isn't frozen," said Tiga-belas indignantly. "It's been laminated. We stiffened it with celluprime and then we veneered it down, about seven thousand layers. Each one has plastic of at least two molecules thickness. This mouse can't spoil. As a matter of fact, this mouse is going to keep on thinking forever. He won't think much, unless we put the voltage on him, but he'll think. And he can't spoil..."
![](../graphics/content06/brain-chip.jpg)
(Rat brain cells form organized clusters - a brain chip)
As it turns out, scientists are hard at work creating brain chips with real brains; see Brain Chips With Uniform Self-Organized Neurons for more information.
From MITs Technology Review blog and the original paper Escape Trajectories of Solar Sails and General Relativity.
Scroll down for more stories in the same category. (Story submitted 8/21/2009)
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 ( 0 )
Related News Stories -
("
Space Tech
")
Lava Tubes On Moon And Mars
'...it never was built, or anything like that; it's just a big volcanic bubble.' - Robert Heinlein, 1957.
SpaceX EVA Spacesuit Tested By Polaris Dawn Crew
'Now, except for weight and heat, the same conditions prevail in this chamber as in space.' - Otto Willi Gail, 1929.
ESA To Build Moon Bases Brick By Printed LEGO Brick
'We made a crude , small cell and were delighted - and, I admit, somewhat surprised - to find it worked.' - John W. Campbell, 1950.
FLOAT Levitating Train On The Moon ala Clarke
'The low-slung monorail car, straddling its single track, bored through the shadows on a slowly rising course.' - Arthur C. Clarke, 1955.
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.
|
![](../graphics/MCSpacerNearRight.gif) |
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
Biohybrid Robots Made Of Living And Synthetic Materials
'If the biological robots were not living creatures, they were certainly very good imitations.'
Drug Induces Hibernation-Like State In Humans
'... drugged and chilled and stowed in sleep tanks.'
Poul Anderson's 'Brain Wave'
"Everybody and his dog, it seemed, wanted to live out in the country; transportation and communication were no longer isolating factors."
AI Note-Taking From Google Meet
'... the new typewriter that could be talked to, and which transposed the spoken sound into typed words.'
Qore IcePlates Are Personal Cooling Suits
'... underneath they consisted of networks of cooling tubes against the skin.'
P1 Just The Latest Robot To Take A Beating From Humans
'...we mere people come second.'
Waymo Cars Shout At Each Other, Autonomously
'My cars talk to one another. I have no doubt about it...'
Your Solar Electric Paint Is Ready, Larry Niven
'...you spray it on.'
How Long Till We Have These Tattoos?
Truth or fiction?
Seeing Faces On Grains Of Sand (AI Pareidolia)
'... the imprint of her image on the telephoto cell.'
Lunar Biorepository Proposed For Cryo-Preservation Of Earth Species
'...there was no one alive who had ever seen them. But they existed in the Life Bank.'
Tele-Driving Offers Jobs For Tele-Drivers, Not AIs
''...some bored drone pusher in a remote driving centre...'
Autonomous Robotic Dentist - Would You Say 'Ahhh'?
You might be surprised at how much more efficient this could be.
GM Scraps Cruise Origin Robotaxi With No Steering Wheel
'Ames tinkered around with something on the instrument board when he got in; and in a few moments we were off.'
Taza Aya Air-Curtain Tech Protects Turkey Workers
'I'm going to have to buy a filter-mask.'
Torobo Humanoid Robot Hammers A Nail
7-axis dual arms, 3-axis waist (pitch, pitch, yaw), 3-axis neck (yaw, pitch, roll), and 4-axis undercarriage!
More SF in the News Stories
More Beyond Technovelgy science news stories
|
![](../graphics/MCSpacerFarRight.gif) |