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
 |
Jack Vance's Incredibly Thin Solar Sail
Alliant Techsystems and NASA have tested the functional deployment and attitude control of an ultra-lightweight solar sail propulsion system. The 20-meter solar sail and boom system was fully deployed during testing at NASA Glenn Research Center's Plum Brook facility in Sandusky, Ohio.
The lightweight sail material is supported by a series of coilable booms, which are extended via remote control from a central stowage container about the size of a suitcase. The Plum Brook's Space Power Facility is the world's largest space environment simulation chamber, measuring 100-feet in diameter and 122-feet high.
(From Solar Sail Photos)
The coilable mast technology makes possible the gentle tensioning of reflective films on the sail that are just 1/30 the width of a human hair. Additional hardware includes payload fairing interfaces, in-space structural validation elements, an instrument extension boom, propellantless attitude control mechanization, and solar power panels.
When I read about this, I thought immediately about the very early references to solar sails made by Jack Vance in his excellent 1962 short story Sail 25:
Necessarily, the sail must be extremely large and extremely light. We use a fluro-siliconic film a tenth of a mil in gauge, fogged with lithium to the state of opacity. Such a foil weighs about four tons to the square mile. It is fitted to a hoop of thin-walled tubing...
(Read more about Jack Vance's light sail)
When I read this story in the early 1970's, I thought this would be impossible. One-tenth of a mil is just one-ten-thousandth of an inch. If you figure that a human hair is about 3 mils thick, and the ATK solar sail material is 1/30th as thick as a human hair - you get one-tenth of a mil. Pretty close for science fiction - and note the use of a "hoop" to spread it out with.
Read more at NASA tests solar sail technology and 20 meter solar sail and boom system.
Scroll down for more stories in the same category. (Story submitted 5/21/2005)
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 ")
Sunbird Pulsar Fusion Like Leinster's Space Tug
'It was a pushpot, which could not possibly be called a jet plane because it could not possibly fly. Only it did.' - Murray Leinster, 1953.
Crystalline Structures In Space, You Say?
A massive space borne lifeform from ST:TNG.
Amazing Photonic Crystal Light Sail
'That sail will be twenty thousand miles at the wide part.' - Cordwainer Smith, 1960.
The New Habitable Zones Include Asimov's Ribbon Worlds
'...there's a narrow belt where the climate is moderate.' - Harl Vincent, 1931.
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
Sunbird Pulsar Fusion Like Leinster's Space Tug
'It was a pushpot, which could not possibly be called a jet plane because it could not possibly fly. Only it did.'
RentAHuman App Lets AI Agents Hire Humans
'She wouldn't stop until Antar had told her everything he knew about whatever it was that she was playing with on her screen.'
Unitree CEO Wang Xingxing Runs With His G1 Robot Army
'Does thinking you're the last sane man on the face of the Earth make you crazy?'
AIs Turn Marxist Under Bad Management
'It was a general strike of the robots...'
Moscow Attacked By Hundreds Of Drones
'It hurtled on down with inconceivable speed until it was visible as thousands of tiny robot planes...'
Nifty Folding Electric Bicycles!
'Separate paths were provided for them...'
FTC: Says Ring Employees Illegally Surveilled Customers
'Then she looked up with a smile and moved closer to the camera.'
Switzerland May Cap Population At Ten Million
'The population of Castle Hagedorn was fixed...'
Project Silica Offers 'Long-Term' Digital Storage
'... folios and tapes and playable discs of platinum alloy.'
Can 'Tactical Umbrellas' Shield One From Drones
'... another corner of his mind began to think about the shields.'
Crystalline Structures In Space, You Say?
A massive space borne lifeform from ST:TNG.
Garçon! A Menu For Artemis II, S'il Vous Plaît
'Michel Ardan, as a Frenchman, was declared chief cook, an important function, which raised no rival.'
Amazing Photonic Crystal Light Sail
'That sail will be twenty thousand miles at the wide part.'
Blue Collar AI Goes To Work To Mine Its Own Crypto
Blue collar bot.
Rogue AI Replicated Itself
'Sapiro’s computer just kept dialing at random, hanging up on humans, until it got a fellow computer of the same type as itself.'
HandelBot Helps Two-Handed Robots Learn Piano
'I request that you feed the correlation between those dots and the levers of the panel into my memory banks.'
