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Some cool designs

Home Forums Archive Structure Designs Some cool designs

This topic contains 4 replies, has 3 voices, and was last updated by Avatar of Carl-Pålsson Carl-Pålsson 4 years, 11 months ago.

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  • #1046
    Avatar of OCEANOPOLIS
    OCEANOPOLIS
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    #7472
    Avatar of Carl-Pålsson
    Carl-Pålsson
    Participant

    The last one apparently is a spar buoy, but shaped for low water resistance. This might be worth looking into. If you add a couple of plates outside of a cylinder you get a teardrop shape wich should give you a lot less drag and consequently cheaper transport and station keeping.

    Here are some more proposed “artificial islands”, in Russia this time: http://englishrussia.com/?p=4680

    #7474
    Avatar of OCEANOPOLIS
    OCEANOPOLIS
    Participant

    If only the Russians had money,….

    That “Orbiter” is a fine design,…something to consider in terms of “spar” based structure design.

    I like the “wing” profile which allows for good mobility, less resistance then a cylinder when cutting thru waves. The submerge “bulb” (or ballast) I would redesign as a hydrofoil shape and give it a bit of “rake” of 10-15 degrees (adjistable) from the horizontal plan, aft, so it can develop “lift” under power. And power it aft of the bulb, thus applying force exactlly (or close enough) to the center of gravity.Thus, under power the whole structure will ride with very little degree of heel.

    What is also remarkable is that the whole structure could be sailable. (save a lot on moving costs). The above the water structure can be rigged as a mast an fitted w/a main and jib (it looks like it has spreaders already,…). I will try to draw something based on what I said and post it.

    #7518
    Avatar of Jeff-Chan
    Jeff-Chan
    Participant

    Actually a true vertical wing, which Orbiter doesn’t appear to have, is a very efficient sail:

    http://en.wikipedia.org/wiki/Wingsail

    http://www.yachtsponsorship.com/2009/06/wings-versus-sails-americas-cup-tech-brought-to-market/

    One of the America’s Cup yachts in the Stars and Stripes name series had an experimental hard wing sail. Can’t find a reference handy.

    Wings both above and below water are probably a good idea.

    #7525
    Avatar of Carl-Pålsson
    Carl-Pålsson
    Participant

    A small wingsail (in relation to the size of your seastead) could probably be used for cheap and reliable automated station-keeping.

    It should be a pretty straightforward thing to build; a pipe with some plates attached and a couple of large bearings. Then a servo motor and a computer for control.

    http://en.wikipedia.org/wiki/Stars_%26_Stripes_%28yacht%29#Catamaran-hull_yachts

    Two Stars and Stripes cats were built, one with a conventional soft sail (Stars and Stripes S1), and the second with a hard sail (Stars and Stripes H3) built by Scaled. The hard sail proved faster, but the soft sail version was used in the defense because it was considered more than fast enough and had less chance of rigging failure.

    http://www.solarnavigator.net/catamarans.htm

    http://americascup.org/en/acclopaedia/boatdestiny/index.php?idIndex=0&idContent=5171

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