Hull series data

Discussion in 'Boat Design' started by anuprdk, May 13, 2018.

  1. anuprdk
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    anuprdk Junior Member

    Hi

    Does any one know where I can get section data of planing hull series 62?

    thanks
    anup
     
  2. TANSL
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    TANSL Senior Member

  3. anuprdk
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    anuprdk Junior Member

    Sir,
    Thank you for the data. But what does Bp/ Bpa mean? And what about sectional areas? If I use a scale and measure the body plan, for fairing it i will still need station areas.
     
  4. TANSL
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    TANSL Senior Member

    Bp = beam or breadth over chines, excluding external spray strips.
    Bpa = mean breadth over chines, Ap/Lp
    Ap = projected planing bottom area, excluding area of external spray strips
    Lp = projected chine length

    What I would do is, using these pictures, draw the body lines plan with any CAD/drawing program and calculate with it all the values you need.
     
  5. anuprdk
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    anuprdk Junior Member

    Bp/ Bpa is around 80% and 120% at stations 0 and 60? what does this actually mean? I am kind of confused as to what Bp and Bpa actually stand for.
     
  6. TANSL
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    TANSL Senior Member

    Sorry if I'm a bit direct but :
    What exactly do you need?
    Do you know what a chine is?
    Do you know what is projected planing bottom area?
    Do you know what is the projected chine length?
     
  7. anuprdk
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    anuprdk Junior Member

    Sir
    I am knew to planing hull but I do know what a chine is. I just dont understand the concept of projecting the planing bottom area, chine. What purpose does it serve? And where does Bp, Bpa fit?
     
  8. TANSL
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    TANSL Senior Member

    I thought that, when you asked about "planing hull series 62" you already knew what a planing hull is and you would have a slight idea of how its shapes are and how its dimensions are measured. If not, I recommend that you start studying from the beginning.
     
  9. anuprdk
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    anuprdk Junior Member

    Yes Sir. Any suggestions on what books i should refer?
     
  10. TANSL
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    TANSL Senior Member

    There are many books that you should read but it depends, fundamentally, of what your current knowledge is. An interesting, easy-to-read book is "The Nature of Boats" by Dave Gerr.
     
  11. DCockey
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    DCockey Senior Member

  12. TANSL
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    TANSL Senior Member

    No, thats not corrct.
     
  13. Angélique
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    Angélique aka Angel (only by name)

    TANSL, please point out what you think to be not correct, and please post what you think the correct info there should be.
     
  14. DCockey
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    DCockey Senior Member

    From Performance By Design, Donald L Blount, p 311:
    "Ap projected area of hull bottom bounded by chines and transom"​
    Performance By Design also has a discussion of Ap 0n pp 57-59. Donald Blount was one of the two authors of Resistance Tests of a Systematic Series of Planing Hull Forms which was the original published report on Series 62. It is the source of the Series 62 lines which TANSL provided above.

    (Name of paper corrected)
     

  15. DCockey
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    DCockey Senior Member

    Another definition of Ap which is equivalent to Blount's quoted above and the one I provided above:
    Ap Projected area on the free surface from the hull, below and including the chine.
    Source: Resistance Tests of a Systematic Series of U.S. Coast Guard Planing Hulls NSWCCD-50-TR-2005/063 December 2005
     
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