Recent Content by mij

  1. mij
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    Outward facing J/foils on a cat

    Some more experiments along these lines: [MEDIA] [MEDIA] [MEDIA]
    Post by: mij, Aug 1, 2017 in forum: Hydrodynamics and Aerodynamics
  2. mij
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    Wing jib or sail jib?

    I can't answer your question, but I have made and sailed a model cat with a wing jib: EsOeRClLe44 And quite a few mast aft wings, which are a...
    Post by: mij, Dec 5, 2016 in forum: Hydrodynamics and Aerodynamics
  3. mij
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    A future sailboat ?

    Your rotating rib approach for the wing is ingenious.
    Post by: mij, Apr 18, 2016 in forum: Sailboats
  4. mij
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    Outward facing J/foils on a cat

    I'm impressed by the stability these foils provide. I cut down the width of the cat considerably, and it is still very stable: watch?v=qqsic9UPc4k
    Post by: mij, Apr 11, 2016 in forum: Hydrodynamics and Aerodynamics
  5. mij
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    Outward facing J/foils on a cat

    I think that this might be right. Doug L's point that this is something like the Quant Scowl arrangement is also interesting. It makes me...
    Post by: mij, Nov 29, 2015 in forum: Hydrodynamics and Aerodynamics
  6. mij
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    Outward facing J/foils on a cat

    Less windy conditions: NTSP1uKrijU
    Post by: mij, Nov 28, 2015 in forum: Hydrodynamics and Aerodynamics
  7. mij
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    Outward facing J/foils on a cat

    Doug, WRT RM, my comment was based on observation. The boat seemed to be much more upright than I would have expected with a more conventional...
    Post by: mij, Nov 28, 2015 in forum: Hydrodynamics and Aerodynamics
  8. mij
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    Outward facing J/foils on a cat

    rc cat with outward facing foils I have been looking at this type of foil on rc cats. As predicted by others, altitude control is an issue....
    Post by: mij, Nov 28, 2015 in forum: Hydrodynamics and Aerodynamics
  9. mij
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    Outward facing J/foils on a cat

    Very nice Gary. How did the performance in the two configurations compare?
    Post by: mij, Aug 29, 2015 in forum: Hydrodynamics and Aerodynamics
  10. mij
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    Outward facing J/foils on a cat

    ghMO7g4M8vI https://www.youtube.com/watch?v=ghMO7g4M8vI See from 13:30.
    Post by: mij, Aug 28, 2015 in forum: Hydrodynamics and Aerodynamics
  11. mij
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    Outward facing J/foils on a cat

    Thanks again for the detailed explanation. I like the two flap idea. It seems to me that there should be other ways to exploit the leeway other...
    Post by: mij, Aug 26, 2015 in forum: Hydrodynamics and Aerodynamics
  12. mij
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    Outward facing J/foils on a cat

    I may not have explained the flap position properly: [IMG]
    Post by: mij, Aug 26, 2015 in forum: Hydrodynamics and Aerodynamics
  13. mij
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    Outward facing J/foils on a cat

    Thanks for the explanations. In summary, would it be correct to say that if we ignore heave stability control, the outward facing foils should be...
    Post by: mij, Aug 25, 2015 in forum: Hydrodynamics and Aerodynamics
  14. mij
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    Outward facing J/foils on a cat

    I understand this, and it makes sense if only the leeward foil is deployed. But what if the foils cannot be retracted and the windward foil is...
    Post by: mij, Aug 25, 2015 in forum: Hydrodynamics and Aerodynamics
  15. mij
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    Outward facing J/foils on a cat

    I've seen some threads devoted to this question, but I'd like to raise it again. What is the problem with outward facing foils on a cat? In...
    Thread by: mij, Aug 25, 2015, 30 replies, in forum: Hydrodynamics and Aerodynamics