D shape or semi oval advances wing systems shape for double mainsail

Discussion in 'Multihulls' started by Boy Griffioen, Jan 24, 2022.

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D or Oval

  1. D

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  2. Oval

    0 vote(s)
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  1. Boy Griffioen
    Joined: Sep 2017
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    Location: NL

    Boy Griffioen Junior Member

    Maybe it works better with a short mast i will have to try this out. But to keep heeling force as low as possible i start with in essence no steady mast section and just some ropes to tack and keep the wing above water level.

    force vector 2.jpg
     
  2. Gary Baigent
    Joined: Jul 2005
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    Location: auckland nz

    Gary Baigent Senior Member

    If I remember correctly OTIP worked fine until ... the media copter flew very close, way too close and also upwind to get the special image; anyone who has sailed with accompaning chopper realize the astonishing power of the downdraft.
     
  3. Boy Griffioen
    Joined: Sep 2017
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    Location: NL

    Boy Griffioen Junior Member

    It could an should sail fine for a cat race. But unlike a normal sail rig the geometry gives the wing more heeling power when it heels more. But i want it for long distance racing and i want to rest once in a while and set the sails in a save mode. I think my proposed canting mast gives less heeling power and all weight of the boat helps to keep the wing in place. Worst case scenario would be the wind power pushing the sail under water and lifting the boat out of the water to a certain degree but no capsizing. Just retrieving te rig. Probably reef a bit and sail on.
     

  4. Erwan
    Joined: Oct 2005
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    Location: France

    Erwan Senior Member


    Yes I think you remember correctly, I had forgotten the helicopter fan
     
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