Recent Content by Billwrin

  1. Billwrin
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    Aerofoil underwater

    It took a minute to find it. Dr Walter Adey invented a system in the late '70s. The dump tank was an important part of a bigger system. It's no...
    Post by: Billwrin, Oct 25, 2012 in forum: Hydrodynamics and Aerodynamics
  2. Billwrin
    Post

    Aerofoil underwater

    Oh, I misunderstood or maybe read too much into a previous reply. You need a dump tank. I once made a device for simulating wave action without...
    Post by: Billwrin, Oct 23, 2012 in forum: Hydrodynamics and Aerodynamics
  3. Billwrin
    Post

    Rudder foil shapes

    I have a formula for you. r=1.1019c(t(squared)). R is the radius of the leading edge. C is the cord. T is the max thickness (expressed as a...
    Post by: Billwrin, Oct 22, 2012 in forum: Multihulls
  4. Billwrin
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    Aerofoil underwater

    I've spent some time working with fish keeping and these are very good solutions. No matter how much turbulence you have under water very little...
    Post by: Billwrin, Oct 22, 2012 in forum: Hydrodynamics and Aerodynamics