Foil series

Discussion in 'Boat Design' started by BigYeet, Mar 4, 2020.

  1. BigYeet
    Joined: Feb 2020
    Posts: 12
    Likes: 0, Points: 1
    Location: NZ

    BigYeet Big yeet

    Hey guys I am designing foils for a Moth and I am wondering what foil series would be best for the vertical and horizontal foils. If anyone knows the recommended chord,thickness,length etc please tell me.
  2. tspeer
    Joined: Feb 2002
    Posts: 2,319
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    Location: Port Gamble, Washington, USA

    tspeer Senior Member

    The more advanced Moth designs use sections that are specifically designed for the application, using tools like Xfoil. You can put off the choice of section until you've decided on the span, area, flap size, and planform shape. Once you know the range of lift coefficients and speeds, you can design section shapes to perform well over the operating range. It's likely you'll want to design different shapes along the span of the foil, due to differences in Reynolds number and spanwise load distribution.

    There are lots of papers out there on Moth design, such as this one. A velocity prediction program (VPP) is essential to estimating the foil operating conditions.
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