delta conic

Discussion in 'Boat Design' started by gtflash, Oct 20, 2006.

  1. gtflash
    Joined: Jun 2006
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    Location: uk

    gtflash Senior Member

    newbie here... be gentle.

    Im trying to establish what shape a delta conic planning hull actually is, in terms of bow and aft shape and its pros and cons when performing

    Thankyou

    Flash
     
    gtflash, Oct 20, 2006
    #1
  2. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    It is an obsolete Chris Craft design from the 50's. It only refers to the bottom up to the chines. They used it for about 20 years or so.
     
    gonzo, Oct 22, 2006
    #2
  3. Willallison
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    Willallison Senior Member

    Not sure what Gonzo's talking about there - Chris Craft may or may not have used it, I'm not sure.
    It was a hull shape developed by Harry Schoel. If you do a search of the US patents office you can download a description and some drawings. Basically the fwd sections are conical (developable) and the after sections are a monohedron (constant deadrise). The joint between the starts at the keel near the forefoot and ends at the chine some way aft - in a sort of vee-shape. Hence delta conic...
     
    Willallison, Oct 22, 2006
    #3
  4. gonzo
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    gonzo Senior Member

    It is the design of old Chris Craft hulls.
     
    gonzo, Oct 22, 2006
    #4
  5. gtflash
    Joined: Jun 2006
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    gtflash Senior Member

    i understand the aft section being a constant deadrise. so is the forward section shallower in the middle and developing deeper further outwards?
     
    gtflash, Oct 24, 2006
    #5
  6. Geronimo
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    Geronimo New Member

    Geronimo, Oct 24, 2006
    #6

  8. Willallison
    Joined: Oct 2001
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    Willallison Senior Member

    yes, the fwd sections are convex
     
    Willallison, Oct 24, 2006
    #7
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