 |
Superconducting Magnetic Bubble To Protect Astronauts From Radiation
Using fields of force to accomplish goals in space is a favorite device of
science fiction authors. In Larry Niven's award-winning 1970 novel Ringworld,
protection against the harsh environmental hazards of space is provided by
a hybrid system
consisting of a General
Products hull and
the Slaver stasis
field. The General Products
hull is an example of a "passive" or material shielding; the hull is transparent
to visible light and impervious to electromagnetic energy and matter in any
form.
The
Slaver
stasis
field creates
an area in which
time
does not pass; since time stands still, no damage can be done to the material
occupying the space protected by the field.
Former astronaut Jeffery Hoffman is proposing a different sort of hybrid system
to protect future astronauts; on long voyages through the solar system they
will
be exposed
to
lethal doses of radiation from cosmic rays. He
has recieved
funding from NASA through NIAC (NASA Institute for Advanced Concepts) to research
the idea of a superconducting magnetic radiation shielding system to supplement
(or replace) traditional passive shielding.
(From Magnetic Bubble)
The idea of using a magnetic field to shield a craft from radiation is not new; as Dr. Hoffman points out "the Earth has been doing it for billions of years!" Using magnetic shielding was proposed in the late 1960's, but not pursued after plans for further space exporation were scrapped.
Two types of radiation need to be addressed, according to William S. Higgins, an engineering physicist who works on radiation safety at Fermilab, the particle accelerator near Chicago, IL:
- Solar flare protons (which would come in bursts following a solar flare)
- Galactic cosmic rays (a continuous background radiation)
Hoffman believes that the best solution may be a hybrid system using both a magnetic field and some passive absorbtion shielding. “That’s the way the Earth does it,” Hoffman explained, “and there’s no reason we shouldn’t be able to do that in space.”
A related experiment, the Alpha Magnetic Spectrometer (AMS), is scheduled to be attached to the outside of the International Space Station and search for different types of cosmic rays. This experiment will be a practical test of maintaining the magnetic field strength and the near-absolute zero temperatures of this kind of system in space.
Phase I research studies the shielding efficiency of the baseline design, and would begin conceptual systems design. Phase II would provide a detailed comparison of magnetic shielding with traditional passive absorption technologies, and detail how to integrate the magnetic shield into a spacecraft.
If you are interested in another NASA proposal that was presaged in science fiction, see NASA's New Radiation Shielding First Proposed By John W. Campbell In 1936. Read more at Magnetic Bubble Could Protect Astronauts and Use of Superconducting Magnet Technology for Astronaut Radiation Protection (pdf).
Scroll down for more stories in the same category. (Story submitted 12/14/2004)
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 ( 2 )
Related News Stories - (" Space Tech ")
Moon Express Lunar Robot Mining: Shine On, Harvest Moon
'The bulldozer moved through the lunar strip mine... ' - Pournelle and Niven, 1981.
Asteroid Deflection With DART
'This obelisk is one huge deflector mechanism...' Gene Roddenberry, 1968.
Unrolling The Filmy Materials Of Space Tech
'When unfolded and unrolled... it became a tough, gleaming film.' - Jack Vance, 1962.
Bake in Space Bake-Off... In Space!
'A joyous condition commenced for the cook in the electric kitchen...' - Otto Willi Gail, 1929.
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.
Current News
Desktopography Makes Virtual Desktops Real
'Ender doodled on his desk, drawing contour maps of mountainous islands and then telling his desk to display them in three dimensions...'
LaWS Laser Can Take Out Rogue Drones
Looks like a weapon for the Runaway squad!
Moon Express Lunar Robot Mining: Shine On, Harvest Moon
'The bulldozer moved through the lunar strip mine... '
Liquid Body Armor For TALOS Exoskeleton
'... instantly became rigid all over when something struck it...'
Hyperloop One Video Shows It Works!
'Complete evacuation of the interior of the tubes [and] a wave that provides the new propulsive energy for the cars...'
Chairless Chair Exoskeleton By Sapetti
'Earth's scientists... devised rigid metallic clothing...'
Publishing Technologies In Science Fiction
Well, this should be enough references to start...
Russia Working On Military Exoskeletons
'Вы похожи на большую стальную гориллу...'
3D Printed Bionic Chinese Skin
Your skin is ready!
Flexup Tire Design Good For Tumblebugs
'Each spoke telescopes into five sections.'
3D Printed Graphene Aerogel - So Light!
'... light as cork and stronger than steel...'
Asteroid Deflection With DART
'This obelisk is one huge deflector mechanism...'
Translate One2One From IBM's Watson Your Communication Solution
'It then excretes into the mind of its carrier a telepathic matrix...'
News Now Philip K. Dick's Bailiwick
'A vast complex electronic organism... responsible to no one...'
Autonomous BADGER Robot Drilling Machine
'The compacted matter... makes a better tunnel lining than concrete, don't you think?'
TALOS Exoskeleton Development Proceeding
'Suited up, you look like a big steel gorilla...'
