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

 

Nano-Particle Field Extraction Thruster

A NanoFET - a nano-particle field extraction thruster uses nanoparticles as propellant. The "engine" is etched onto wafer-thin silicon; with fuel, it is about one centimeter thick. Tens of thousands of accelerators fit onto the area of a postage stamp. NanoFETs work like miniaturized versions of particle accelerators.

NanoFET is essentially a "stick-on" thruster that could power small spacecraft or devices over large distances for long space missions.


(NanoFET)

NanoFET systems can deliver up to ten times the thrust of an ion engine; they offer high efficiency, lower thruster specific mass and longer operational lifetimes. Since the nanoparticles are charged electrostatically rather than ionized as in ion or Hall thrusters, greater reliability and efficiency can be achieved. Without the need to ionize propellant, nanoFET does not experience charge exchange (CEX) collisions between high energy charged and slow moving neutral particles.

NanoFETs offer a wide span of thrust-to-power ratios at very high efficiency in a single package. This provides mission designers with a great deal of flexibility.

Once within the planetary body’s gravity well, nanoFET could switch to a low-Isp, high thrust-to-power mode to provide greater thrust capability. This flexibility also provides a wider margin for both robotic and crewed missions to accommodate offnominal and abort scenarios, adjust the flight time, and perform dynamic retasking to take advantage of in-flight opportunities. To achieve comparable capabilities with other EP systems across the entire Isp range, multiple engine types would have to be used, which tends to increase the mass of the propulsion system while complicating spacecraft integration and design

From the conceptual standpoint, NanoFETs are miniaturized versions of sf writer Murray Leinster's pushpots, small rocket motors that could be attached to objects and push them into space. Bigger object? Attach more pushpots.

They seemed to land by hundreds, but their number was actually in dozens. It was not until the last one was down that Joe could make himself heard. The pushpots were jet motors in frames and metal skin, with built-in jato rocket tubes besides their engines. On the ground they were quite helpless. In the air they were unbelievably clumsy. They were actually balanced and steered by vanes in the blasts of their jets, and they combined the absolute maximum of sheer thrust with the irreducible minimum of flyability.

... A gigantic crane-truck came in through the wide doorway. It dangled a pushpot. It rolled over to the launching cage in which the spaceship lay and set the unwieldy metal object against that cage. There was a clank as the pushpot caught hold of the magnetic grapples. The crane went out again, passing a second crane carrying a second pushpot. The second beetle-like thing was presented to the cage. It stuck fast. The crane went out for more. (Read more about pushpots)

Read more at Next Big Future.

Scroll down for more stories in the same category. (Story submitted 7/10/2009)

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 ( 2 )

Related News Stories - (" Space Tech ")

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.

SpaceX Intros Extravehicular Activity Suit
'Provision had been made to meet the terrific cold which we knew would be encountered the moment we had passed beyond the atmosphere.' - Garrett P. Serviss, 1898.

SpaceX Wants A Moonbase Alpha
'And he had been sent with troops, supplies and bombs to command Russia's most trusted post, the Moonbase.' - L. Ron Hubbard, 1948.

NASA Wants Self-Driving Or Remote-Controlled Vehicles For Lunar Astronauts
'THE autobus turned silently down the wide street of Hydropole. Robot-guided, insulated from noise and cold...'

 

Google
  Web TechNovelgy.com   

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

SliceIt! Why Not Teach Robots To Use Knives?
'One building now gushed forth smoke and another stench that was unmistakable.'

NYC/Dublin Portal Fails To Meet 'Guardian Of Forever' Standards
I am the Guardian of Forever.

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.'

Singapore Writers Push Back On LLM Training
'...we've promised him a generous pension from the royalties.'

SpaceX Intros Extravehicular Activity Suit
'Provision had been made to meet the terrific cold which we knew would be encountered the moment we had passed beyond the atmosphere.'

Athena Smart Security Guard Robot With Face Recognition
'You are who we say you are, Dr. Dakin,' Turner said.'

The FLUTE Project - A Huge Liquid Mirror In Space
'It's area, and its consequent light-gathering capacity, was many times greater than any rigid mirror...'

Robot Preachers Found To Undermine Religious Commitment
'Tell me your torments,' the Padre said, in an elderly voice marked with compassion.

CyberCab - Tesla Renames The Robotaxi
'A cybercab dogged their heels...'

SpaceHopper Microgravity Robot Lands On Its Feet
'...a slender-legged tripod surmounted by a spherical body no larger than a football.'

Brin's 1990 Novel Earth Still Full Of Predictions
'... making the point that their likenesses, every move they made, were being transmitted.'

'Whisper Mode' ala Blue Thunder Researched At Bristol
'Forest Lawn.'

Gaia - Why Stop With Just The Earth?
'But the stars are only atoms in larger space, and in that larger space the star-atoms could combine to form living matter, thinking matter, couldn't they?'

Microsoft VASA-1 Creates Personal Video From A Photo
'...to build up a video picture would require, say, ten million decisions every second. Mike, you're so fast I can't even think about it. But you aren't that fast.'

Splendid View Of Eclipse From Orbit Visualized And Repurposed By Arthur C. Clarke
'The area affected was five hundred kilometres across, and perfectly circular.'

Bespoke Environment Music From AIs
'Call 'em Winter Mute," said the other, making it two words.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.