multi sail smaller sails for lower c/g thrust sweetspot

Discussion in 'All Things Boats & Boating' started by skeatesy, May 19, 2012.

  1. skeatesy
    Joined: Nov 2010
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    Location: new jerusalum canberra australia

    skeatesy skeatesy

    multi sail smaller sails for lower c/g thrust sweetspot... especialiy on land yatchs and wind bikes and water cattatmarangs ect . skeatesy ..:cool:[​IMG]
    http://skeatez.freeforums.org/electric-bike-with-belt-sander-and-generator-range-extender-t26.html
    <a href="http://www.freeimagehosting.net/k4tlb"><img src="http://www.freeimagehosting.net/newuploads/k4tlb.jpg"></a>
    <a href="http://www.freeimagehosting.net/k4tlb"><img src="http://www.freeimagehosting.net/newuploads/k4tlb.jpg"></a>
    who needs to be effcient when easier made multi sails do the job ...
     

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  2. skeatesy
    Joined: Nov 2010
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    Location: new jerusalum canberra australia

    skeatesy skeatesy

    even a multi sail hull boat easier to managre and build ..

    even a multi sail hull boat easier to managre and build ..:rolleyes:
     

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  3. Stumble
    Joined: Oct 2008
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    Stumble Senior Member

    I seriously doubt that these configurations would work. Other than the upwind sail all of the rest will be blanketed by the others, causing huge drops in efficiency, as you add more and more they probably add more drag that they do propulsion.

    There are some cats that are using twin side by side rigs, but 1)they are still pretty experimental, 2) are only found on boats where the masts are separated by a significant portion of their height 3) often remove one or more sails from the system 4) do no offer twice the performance of a single rig the same size.
     
  4. skeatesy
    Joined: Nov 2010
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    Location: new jerusalum canberra australia

    skeatesy skeatesy

    flying land yatch potential

    flying land yatch potential ..may be a thrill for the moment but a reality further down the track ..:p
     

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  5. Stumble
    Joined: Oct 2008
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    Location: New Orleans

    Stumble Senior Member

  6. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    Someone needs to do some more theory research . . .
     

  7. CT249
    Joined: May 2003
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    CT249 Senior Member

    Wow, I never realised that NASA, NACA, all the world's aerodynamicists, all the physicists, all the yacht and dinghy and cat designers, all the sailmakers. hang-glider manufacturers and everyone else were doing it wrong! :) Even the guys who designed the TT bike in the pics are doing it wrong, too!
     
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