Proiectul Orion

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    The Ultimate 1950s Space Technology, which almost made it to Saturn

    Obviously, "almost" is a key word here, but apparently NASA still has "small secretcontingency plan division" which is dedicated to preserving "Orion" nuclear propulsiontechnology - and reviving it in case of a killer asteroid threat.

    (image credit:Adrian Mann)

    So what exactly is this "Project Orion" - the most radical propulsion technology for kick-ass space missions? No, it's not the NASA's future space capsule ("Apollo-on-steroids",some may say) - but a proposed colossal nuclear-bomb-powered rocket from 1958:

    http://www.bisbos.com/http://www.bisbos.com/http://en.wikipedia.org/wiki/Project_Orion_(nuclear_propulsion)http://www.bisbos.com/http://www.bisbos.com/http://en.wikipedia.org/wiki/Project_Orion_(nuclear_propulsion)
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    (images by Rhys Taylor, see the full animation of "Orion" launchhere)

    Nuclear Propulsion: Getting More Miles Per Gallon

    ... or rather, giving you maximum payload per launch:

    http://www.nuclearspace.com/movie_projectORION.aspxhttp://www.nuclearspace.com/movie_projectORION.aspxhttp://www.youtube.com/watch?v=V1vKMTYa40Ahttp://www.youtube.com/watch?v=V1vKMTYa40Ahttp://www.youtube.com/watch?v=V1vKMTYa40Ahttp://www.nuclearspace.com/movie_projectORION.aspxhttp://www.nuclearspace.com/movie_projectORION.aspxhttp://www.youtube.com/watch?v=V1vKMTYa40A
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    (image credit:NASA)

    The ultimate BIG technology, conceived in the 1950s to go to Saturn, Jupiter, and

    beyond... was powered by a row upon row of controlled, directed nuclear blasts....

    http://commons.wikimedia.org/wiki/Image:NASA-project-orion-artist.jpghttp://commons.wikimedia.org/wiki/Image:NASA-project-orion-artist.jpghttp://lh6.ggpht.com/abramsv/SO_90Cx69ZI/AAAAAAAAhAc/WYruqbRDUpk/s1600-h/345yerhfgjgh.jpghttp://commons.wikimedia.org/wiki/Image:NASA-project-orion-artist.jpghttp://commons.wikimedia.org/wiki/Image:NASA-project-orion-artist.jpg
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    (Collection of George Dyson)

    Here is a hugely entertaining talk video by George Dyson about the development andthe current state of Project Orion:

    http://www.ted.com/index.php/talks/george_dyson_on_project_orion.htmlhttp://lh5.ggpht.com/abramsv/SO_9yzeqWdI/AAAAAAAAg_4/7pBwYCQt7es/s1600-h/3456e5ytfrgjghkhj.jpghttp://www.ted.com/index.php/talks/george_dyson_on_project_orion.html
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    Maybe somebody is already building it, in the remote Canadian Rockies

    With a mass of 1000-2000 metric tons and 1000 nuclear bombs for propulsion themedium version alone would have been a terrifying monster. The "super" Orion design

    at 8 million tons could easily be the size of a small city. Here is a size comparison ofsome of the proposed versions:

    (image credit:Selden)

    As a side note, we should also mention project "Aldebaran" (1962) - immense nuclear-pulse sea-launch vehicle:

    http://www.lepp.cornell.edu/~seb/celestia/orion/index.htmlhttp://www.lepp.cornell.edu/~seb/celestia/orion/index.htmlhttp://lh6.ggpht.com/abramsv/SO_91YtdF3I/AAAAAAAAhA0/UT-3eMzyKf8/s1600-h/600px-ProjectOrionConfiguration.jpghttp://www.lepp.cornell.edu/~seb/celestia/orion/index.htmlhttp://www.lepp.cornell.edu/~seb/celestia/orion/index.html
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    (image credit:astronautix)

    Another US Air Force project from the 1960s - Project Pluto - nuclear powered cruisemissiles (SLAM):

    http://www.astronautix.com/lvs/aldbaran.htmhttp://www.astronautix.com/lvs/aldbaran.htmhttp://www.astronautix.com/lvs/aldbaran.htmhttp://en.wikipedia.org/wiki/Project_Plutohttp://lh5.ggpht.com/abramsv/SO_94oHnsjI/AAAAAAAAhC4/SNDSYYCd-LI/s1600-h/927b53979e295f1faf.jpghttp://www.astronautix.com/lvs/aldbaran.htmhttp://www.astronautix.com/lvs/aldbaran.htmhttp://en.wikipedia.org/wiki/Project_Pluto
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    To the stars - one nuke at a time!

    Various mission profiles for "Orion" were considered, including an ambitious interstellarversion (asteroid defense and mining were among other ideas). This called for a 40-million-ton spacecraft to be powered by the sequential release of ten million bombs,each designed to explode roughly 60 m to the vehicle's rear.

    Here are some visualizations:

    http://lh4.ggpht.com/abramsv/SO_94IdYr5I/AAAAAAAAhCs/-daKTZPJsVo/s1600-h/4367u46jh%2Cmn.jpg
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    http://lh4.ggpht.com/abramsv/SO_93xXdysI/AAAAAAAAhCg/c2UoMQCiKNM/s1600-h/345yetrjhgjmh.jpg
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    (top image byRhys Taylor)

    http://www.nuclearspace.com/movie_projectORION.aspxhttp://www.nuclearspace.com/movie_projectORION.aspxhttp://www.nuclearspace.com/movie_projectORION.aspxhttp://lh4.ggpht.com/abramsv/SO_92PgE2wI/AAAAAAAAhBY/ux1XjqNDttI/s1600-h/we5tryedfhgfnvb.jpghttp://lh3.ggpht.com/abramsv/SO_93k-RwcI/AAAAAAAAhCU/uEEgBqXdD1M/s1600-h/467itykhjkhj%2Cljk.jpghttp://www.nuclearspace.com/movie_projectORION.aspx
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    The Partial Test Ban Treaty of 1963 effectively killed the project, after $11 million hadbeen spent on its development over nearly seven years. These are the screenshotsfrom top secret video, showing the tests:

    (Collection of George Dyson)

    What!? You wanna put 1000 nuclear explosions behind my back?

    http://en.wikipedia.org/wiki/Partial_Test_Ban_Treatyhttp://lh6.ggpht.com/abramsv/SO_9zQ11oDI/AAAAAAAAhAE/gPMRRICPrYo/s1600-h/345y63e5hyfghjg.jpghttp://en.wikipedia.org/wiki/Partial_Test_Ban_Treaty
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    So, why it's not exactly the safest way to travel? Among other obvious things:

    - the ship could explode on the launch pad, or before reaching orbit, endangering wholeareas on Earth.- the radiation levels for the space pilots were pretty significant.

    - the people in Miami looking up and seeing this ship taking off could get eye burns(which gives you an idea how bright it might be)

    http://lh4.ggpht.com/abramsv/SO_92oqGZJI/AAAAAAAAhBw/KhchqrpkLdc/s1600-h/sdfgwrgdbgffg.jpg
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    (imagevia)

    Classified... declassified... and RE-classified!

    Parts of this project still seem to be classified today. George Dyson recollects: "NASAhad no interest, they tried to kill the project. The people who supported it were the AirForce, so they made it top secret..." It is still very dangerous and touchy subject, mostlybecause of the heart of the project - controlled ways to get directed energy explosions,and directing nuclear explosions at the ship.

    http://www.orbithangar.com/http://www.orbithangar.com/http://lh6.ggpht.com/abramsv/SO_913JPbSI/AAAAAAAAhBM/Duqy4uLJdBw/s1600-h/3546e5yhfjghmb.jpghttp://www.orbithangar.com/
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    Unpublished documents - a set on Flickr. Tech historian George Dyson collected thesepapers, written a book "Project Orion", which chronicles the project and the lives of thescientists behind it - including his father, Freeman Dyson (remember the Dyson'Sphere?).

    Arabic printing of the book, which says "Declassified" on the cover:

    http://www.flickr.com/photos/xeni/sets/72157594329917915/http://www.space.com/spacelibrary/books/library_projectorion_020709.htmlhttp://en.wikipedia.org/wiki/Freeman_Dysonhttp://lh5.ggpht.com/abramsv/SO_92ZQYtGI/AAAAAAAAhBk/ih4EnxF5_-0/s1600-h/3457eyrhgfnjgh.jpghttp://lh3.ggpht.com/abramsv/SO_95r_RdUI/AAAAAAAAhDc/1VSp0okD8Yo/s1600-h/3456urjygmhj.jpghttp://www.flickr.com/photos/xeni/sets/72157594329917915/http://www.space.com/spacelibrary/books/library_projectorion_020709.htmlhttp://en.wikipedia.org/wiki/Freeman_Dyson
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    (Collection of George Dyson, imagevia, more info)

    Orion's Possible Rebirth

    The leading scientists of this project were actually planning to go into space on thismonster, taking their kids with them. On the surface, this project appears to be killed(although parts of it live on in a strange ways)...

    "But hey, it does make more sense than the space shuttle, so things are looking up",says George Dyson.

    http://www.flickr.com/photos/xeni/270626963/in/set-72157594329917915/http://www.flickr.com/photos/xeni/270626963/in/set-72157594329917915/http://www.flickr.com/photos/xeni/270626963/in/set-72157594329917915/http://www.boingboing.net/2006/10/17/project_orion_more_c.htmlhttp://www.thespacereview.com/article/695/1http://www.flickr.com/photos/xeni/270611730/in/set-72157594329917915/http://www.flickr.com/photos/xeni/270626963/in/set-72157594329917915/http://www.boingboing.net/2006/10/17/project_orion_more_c.htmlhttp://www.thespacereview.com/article/695/1
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    (Orion Nebula - image byNASA)

    http://antwrp.gsfc.nasa.gov/apod/ap060119.htmlhttp://antwrp.gsfc.nasa.gov/apod/ap060119.htmlhttp://antwrp.gsfc.nasa.gov/apod/ap060119.htmlhttp://antwrp.gsfc.nasa.gov/apod/ap060119.htmlhttp://antwrp.gsfc.nasa.gov/apod/ap060119.html