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View Full Version : Positron Drive: Fill 'er Up For Pluto



Fraser
2005-Sep-06, 09:28 PM
SUMMARY: This year NASA's Institute for Advanced Concepts (NIAC) has selected a dozen new-fangled ideas that could lead to revolutionary changes in the way we explore the near and far solar system. Among these advanced concepts was a proposal headed up by Dr. Gerald A. Smith, of Positronics Research LLC, Santa Fe, N.M. whose "Positron-propelled and Powered Space Transport Vehicle for Planetary Missions" could lead to the kind of high-efficiency propulsion systems needed to get there and back without having to cart vast quantities of chemically-based fuel and oxidizer along for the ride.

View full article (http://www.universetoday.com/am/publish/positron_drive_pluto.html)
What do you think about this story? post your comments below.

publiusr
2005-Sep-07, 07:24 PM
Don't count heavy lift out yet.

Sneemaster
2005-Sep-30, 05:04 PM
How about beaming high energy electromagnetic energy (UV, gamma rays or Xrays) at that same tungsten (or whatever) to create the electron-positron pair? I think it takes 1.5 MeV of energy to create an electron-positron pair. Then use a magnetic field to separate the anti-particles. The next question would be efficient storage of large quantities of anti-matter. I have no idea how to store large quantities without a good magnetic storage.
I am amazed other scientists dismiss positron-electron antimatter usage because they think gamma-rays are "useless" energy, thanks for showing that there is good potential for this method.

01101001
2006-Apr-14, 10:01 PM
NASA Feature: New and Improved Antimatter Spaceship for Mars Missions (http://www.nasa.gov/mission_pages/exploration/mmb/antimatter_spaceship.html)


Another significant advantage is speed. The Reference Mission spacecraft would take astronauts to Mars in about 180 days. "Our advanced designs, like the gas core and the ablative engine concepts, could take astronauts to Mars in half that time, and perhaps even in as little as 45 days," said Kirby Meyer, an engineer with Positronics Research on the study.

Spacemad
2006-Apr-15, 11:54 AM
All this is very interesting & would be fantastic if ...

As always we get stuck on this "if ..." issue! (As well as lack of funding!)

It would be great to get a spacecraft to Mars in less time than with conventional, chemical fuel. I would love to see it take place in my lifetime as well!

GOURDHEAD
2006-Apr-15, 01:31 PM
Why not go to Mars in less than a week? See: http://home.comcast.net/~mbmcneill7/