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
 |
30-Day Trip To Mars?
In his 1961 novel Stranger in a Strange Land, Robert Heinlein is clear about the real-world limitations of space travel to Mars with minimum energy paths:
After making the trip the old fashioned way, a new technology becomes available:
This week, University of Washington researchers and scientists announced their progress in building components of a fusion-powered rocket that could drop the long months required for such a trip to mere weeks.
At that time, only eight Terran years after the founding of the first human colony on Luna, any interplanetary trip made by humans necessarily had to be made in weary free-fail orbits, doubly tangent semi-ellipses--from Terra to Mars, two hundred fifty-eight days, the same for the return journey, plus four hundred fifty-five days waiting at Mars while the two planets crawled slowly back into relative positions which would permit shaping the doubly-tangent orbit-a total of almost three Earth years.
The Federation Ship Champion, manned by an all-male crew of eighteen experienced spacemen and carrying more than that number of male pioneers, made the crossing under Lyle Drive in only nineteen days. The Champion landed just south of Lacus Soli, as Captain van Tromp intended to search for the Envoy.
(A concept image of a spacecraft powered by a fusion-driven rocket)
"Using existing rocket fuels, it's nearly impossible for humans to explore much beyond Earth," said lead researcher John Slough, a UW research associate professor of aeronautics and astronautics. "We are hoping to give us a much more powerful source of energy in space that could eventually lead to making interplanetary travel commonplace."Slough and his team have published papers calculating the potential for 30- and 90-day expeditions to Mars using a rocket powered by fusion, which would make the trip more practical and less costly.
Slough and his colleagues at MSNW think so. They have demonstrated successful lab tests of all portions of the process. Now, the key will be combining each isolated test into a final experiment that produces fusion using this technology, Slough said.
(The Fusion Driven Rocket: Animation)
The Fusion Driven Rocket
Thin hoops of metal are driven at the proper angle and speed for convergence onto target plasmoid at thruster throat. A target Deuterium FRC plasmoid is created and injected into thruster chamber.
Target FRC is confined by axial magnetic field from shell driver coils as it translates through chamber eventually stagnating at the thruster throat.
Converging shell segments form fusion blanket compressing target FRC plasmoid to fusion conditions. The shell absorbs neutrons emitted during fusion.
Vaporized and ionized by fusion neutrons and alphas, the plasma blanket expands against the divergent magnetic field resulting directed flow of the metal plasma out of the magnetic nozzle.
Via Physorg.
Scroll down for more stories in the same category. (Story submitted 4/7/2013)
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 ")
ISS Plagued By Leak - Again!
'There were perhaps a dozen bladder-like objects in the tunnel...' - Robert Heinlein, 1948.
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.
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
Grok And The City Fathers From 'Cities In Flight' By James Blish
'Chris, the City Fathers are not interested in your welfare; I suppose you know that. They're interested in only one thing: the survival of the city.'
Why Not Move A Warehouse District?
'Did you never see a moving house before?'
Will An AI Found A New Religion?
'You must decide how you will worship Me.'
Terraformer Industries Make Methane
'Drake was the young spatial engineer he employed to terraform the little rock...'
I Need An Outdoor Spherical Display
'Usually a spherical display hovered in the centre...'
Worm Disrupts Physics Simulations Undetected For A Decade
'It diverts integers of the data, the fundamental message-units, so that they no longer agree.'
Muxcard Redditor's DIY Credit Card-Sized Computer
It's a computer, but just barely.
'Soft Assembly' Fashions That Fashion Themselves On The Wearer
'Clothes are no longer made from dead fibers of fixed color and texture that can approximate only crudely to the vagrant human figure...'
Orwell's Nightmare Of AI-Written Novels Comes To Pass
'Books were just a commodity that had to be produced, like jam or bootlaces.'
ISS Plagued By Leak - Again!
'There were perhaps a dozen bladder-like objects in the tunnel...'
Ridiculous 'Ghost Murmur' Tech Still Science Fiction
'...it rears and spreads its fan. It can pick one man out of a crowd.'
Outdoor Video Screens Can Be Arbitrarily Large
The Shape of Things To Come
Infrared Contact Lenses To See In The Dark
'I can see in the dark, Case.'
What'll You Have? Extinct Animals Returned, Or Synthetic Eggshells?
'...a new plastic with the characteristics of an avian eggshell.'
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.'
