Active Electrostatic Radiation Shielding For Space Craft
NASA is actively soliciting proposals for developing and validating active electrostatic radiation shielding to be used for protecting astronauts and space habitats in long duration human space missions.
The idea of using an electrostatic radiation shield has been around since at least the 1950's; an artist's conception of an electrostatic shield created from inflatable, conductive spheres about 5 meters across for a lunar base is shown below.
(Artistís concept of an electrostatic radiation shield
Image courtesy ASRC Aerospace.
Rejecting passive shielding as too costly due to weight, NASA is looking carefully at active shielding this time.
Primary candidates for active shielding include but are not limited to: confined and unconfined magnetic fields requiring super-conducting magnets, plasma shields, and electrostatic shields. Recently, a journal publication (Adv. Space Res. 42 (2008) 1043) made a critical analysis and demonstrated why previous approaches of using electrostatic and magnetic radiation shielding were not feasible. Further it clearly established the feasibility proof-of-concept of electrostatic active shielding using the novel approach of quadruple configuration. The biggest advantage of active electrostatic radiation shielding is that by preventing ions from hitting the spacecraft, the unknown harmful biological effects of continuous long duration exposure to space radiation is significantly reduced (~ 70 %) for galactic cosmic rays (GCR) and for solar particle events (SPE), of great concern for radiation exposure, it is practically eliminated. It is believed that the best strategy for radiation protection and shielding for long duration human missions is to use electrostatic active radiation shielding while, in concert, taking the full advantage of the state-of-the-art evolutionary passive (material) shielding technologies for the much reduced and weaken radiation that may escape and hit the spacecraft.
SF fans have been treated to a variety of ideas relating to both active and passive shields on space craft. See the
shield from Doc Smith's 1930 novel Skylark Three, the radiation shield from John W. Campbell's 1936 novel The Ultimate Weapon and the
Langston Field from Niven and Pournelle's 1974 novel The Mote in God's Eye.
From spaceref via @nyrath.
Scroll down for more stories in the same category. (Story submitted 3/19/2011)
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 -
Is 'The Pulsar Positioning System' Evidence For SETI?
'For a hyperspace jump, you need at least four beacons for an accurate fix.' - Harry Harrison, 1959.
Are Observed Radio Bursts An Alien Propulsion Technology?
'These cones were driven through space by light pressure, the possibilities of which force they had long utilized.' - Edmond Hamilton, 1929.
Caltech's ET Laboratory Looks For New Earths
'...set my automatic astronomical instruments to searching for a habitable planet.'- Edmond Hamilton, 1936.
Shh! USAF's Secret X-37B Space Plane Breaks Record
'More airplane than spaceship...' - Robert Heinlein, 1951.
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.
Cattle Avoidance Feature In Indian Autonomous Cars
'The driver went about the business of gently slipping the teflon-coated metal scoop beneath the first animal...'
Project KOVR Fashion Protection From Infosphere
'... the entire shroudlike membrane took on whatever physical characteristics were projected at any nanosecond.'
Twist Bioscience High Density Digital Data On DNA
'They tied the memory to the bloodline and that was their record!'
'We're Not Creating A Terminator' Say Russians About Gun-Wielding Robot Fedor
Nobody is thinking about the Terminator. Westworld, maybe.
Vantablack Now IMMEASURABLY Black
'a black coating now thatís ninety-nine percent absorptive...'
Mercedes-Benz Autonomous Taxi Fleet In 3 Years
'... the taxi utilized sophisticated electronic sensors to perceive its surroundings.'
Is 'The Pulsar Positioning System' Evidence For SETI?
'For a hyperspace jump, you need at least four beacons for an accurate fix.'
Someday, You Might Like VR Enough To Move In
'That barrier was going to melt away someday soon. The transhumanists had promised...'
Humans Use Mental Power For Turtle Slavery
Now we need to start looking for animals with fingers...
Solar-Powered Moisture Vaporator
'The atmosphere yielded its moisture with reluctance.'
DxtER! Tricorder Prize Won By Final Frontier Medical Devices
We've been waiting a long time for this, Star Trek fans.
President Trump's Wall As Otra Nation Hyperloop
'...an hollow tube must be constructed the whole distance... as to admit a four wheeled carriage...'
Pickup Lines From Artificial Intelligences
'They hate us, you know... The humans. They'll stop at nothing.'
Pooper Scooper Drone Robot Watchdog 1
'Robots pick up the garbage and junk...'
Cassie Robot Brings AT-ST Walker To Life
There's even a log test!
Hundreds Of Robot Lawnmowers Invade Texas Town
'The mower reached the edge of the lawn, clucked to itself...'
More SF in the News Stories
More Beyond Technovelgy science news stories