Future Spacecrafts

Discussion in 'Defence & Strategic Issues' started by ashicjose, Apr 26, 2012.

  1. ashicjose

    ashicjose Regular Member

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    Dear friends, for some time there is a wild thinking in my mind and I want to share it with you guys ,is this possible using centrifugal energy by nuclear reactor to push the spacecraft to move forward.By creating something like legs and helical gears in spacecrafts to control the direction.:confused:
     
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  3. shubhamsaikia

    shubhamsaikia Regular Member

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  4. Dovah

    Dovah Untermensch Senior Member

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    A reactor on a space craft would have to be large. It would be costly. The risks would be high(radiation). Fusion and anti-matter are being considered though we are a long time away from actually seeing them.

    Space=Vacuum, so I doubt legs would be of any use (3rd law of motion), gaseous propulsion would be more apt.
     
  5. bengalraider

    bengalraider DFI Technocrat Stars and Ambassadors

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    Well as far as nuclear powered spacecraft are concerned they have been in operation for quite sometime now , most of these spacecraft have used RTG(radioisotopic thermoelectric generators) to convert the heat of nuclear reactions directly into electrical energy. These devices do not propel the craft which is mainly done by utilizing gravity slingshots however the RTG produces electrical energy for the spacecrafts systems.in fact i think they celebrated the 50th yr of nuclear powered spaceflight recently anyhoo i'll just post links and you can go read up as much as you guys want

    50 Years of Nuclear-Powered Spacecraft | Space Nuclear Power & Planetary Probes | Transit 4A & Space Nuclear Age | Space.com
    Russians to ride a nuclear-powered spacecraft to Mars - CSMonitor.com
    Nuclear propulsion - Wikipedia, the free encyclopedia
    Project Orion (nuclear propulsion) - Wikipedia, the free encyclopedia
    Orion the last link was a different beast altogether i'll let the video below talk for me

    HowStuffWorks Videos "Nuclear-Powered Spacecraft"
     
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  6. pmaitra

    pmaitra Moderator Moderator

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    Parhaps we can have electricity activating solenoid installed in the spacecraft. these solenoids would then use the earth's magnetic field to propel itself. It won't be a race car, but it can definitely correct its course and make changes to its orbital radius or velocity.
     
  7. Dovah

    Dovah Untermensch Senior Member

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    Would make sense for smaller ranges an but once out of the magnetic field we'd have to switch to secondary fuel.
     
  8. pmaitra

    pmaitra Moderator Moderator

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    Correct. I was talking for orbital spacecraft that will be close enough to the earth.

    For interplanetary travel, it probably won't work.
     
  9. bengalraider

    bengalraider DFI Technocrat Stars and Ambassadors

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    There have been conceptual nuclear powered ION drive spacecraft designed where the electricity from the RTG is utilized to push a stream of charged ions out of a nozzle in the craft providing thrust!
     
  10. ashicjose

    ashicjose Regular Member

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    my idea is not to have leg to walk but to create centrifugal force ( to do this i think we need legs big as same as the ship itself ) and gears like automatic vehicles ( with this you can control the torque of each leg ) to stop the rotating motion of the legs and generating a force to move the spaceship.
     
  11. ashicjose

    ashicjose Regular Member

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    with nuclear reactors having almost unlimited power supply we will be able to travel for many decades.
     
  12. bengalraider

    bengalraider DFI Technocrat Stars and Ambassadors

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    That was the base for project Daedalus
    [video=youtube_share;RfsKxnPK6ls]http://youtu.be/RfsKxnPK6ls[/video]
    Project Daedalus - Wikipedia, the free encyclopedia
    Nuclear pulse propulsion - Wikipedia, the free encyclopedia
    Starship Daedalus - Introduction
     
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  13. Dovah

    Dovah Untermensch Senior Member

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    Hmm...I'm not sure what you are talking of. Gear motion 'inside' or 'on the 'surface' or in anyway connected to the ship can't propel it in space. Maybe, you're talking of gravity slingshots talked of in Post # 4, if so then you're right.
     
  14. Dovah

    Dovah Untermensch Senior Member

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  15. bengalraider

    bengalraider DFI Technocrat Stars and Ambassadors

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    Real future space propulsion concepts in development presently

    Lightcraft
    A lightcraft is a space- or air-vehicle driven by laser propulsion. Laser propulsion is currently in early stages of development. Lightcraft use an external source of laser or maser energy to provide power for producing thrust. The laser/maser energy is focused to a high intensity in order to create a plasma. The plasma expands, producing thrust.
    [video=youtube_share;KtH-SxqdtaA]http://youtu.be/KtH-SxqdtaA[/video]

    Solar Sails
    Solar sails (also called light sails or photon sails) are a form of spacecraft propulsion using the radiation pressure of light from a star or laser to push enormous ultra-thin mirrors to high speeds.
    Japan's JAXA successfully tested IKAROS in 2010. The goal was to deploy and control the sail and for the first time determining the minute orbit perturbations caused by light pressure. Orbit determination was done by the nearby AKATSUKI probe from which IKAROS detached after both had been brought into a transfer orbit to Venus. The total effect over the six month' flight was 100 m/s.
    [​IMG]
    [​IMG]
    [video=youtube_share;YKjZ2I_gSXM]http://youtu.be/YKjZ2I_gSXM[/video]
     
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  16. bengalraider

    bengalraider DFI Technocrat Stars and Ambassadors

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  17. pmaitra

    pmaitra Moderator Moderator

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    Interesting lunar rover concept:

     
    Last edited by a moderator: May 10, 2015
  18. Godless-Kafir

    Godless-Kafir DFI Buddha Senior Member

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    How much gravity in Moon compared to earth?
     
  19. pmaitra

    pmaitra Moderator Moderator

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    One-sixth.

    As usual, F = Gm[SUB]1[/SUB]m[SUB]2[/SUB]/r[SUP]2[/SUP].
     
  20. Godless-Kafir

    Godless-Kafir DFI Buddha Senior Member

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    Its not a new idea, one of our own space crafts technology is looking into nuclear power. Dont remember the name of the project.
     

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