MICHLET for yacht with separate keel

Discussion in 'Software' started by Remmlinger, Mar 26, 2011.

  1. Remmlinger
    Joined: Jan 2011
    Posts: 242
    Likes: 20, Points: 18, Legacy Rep: 172
    Location: Germany

    Remmlinger engineer

    Has anybody used the software MICHLET to calculate the wave resistance of yachts with a fin keel and a spade rudder? Is it possible to identify the additional wave resistance due to the presence of keel and rudder compared to the wave resistance of the canoe body alone? To define the appendages in MICHLET I see only the possibility to include them into the hull offsets, does that work?

    Can anybody share his experience?
    Thanks
    Uli
     
  2. Leo Lazauskas
    Joined: Jan 2002
    Posts: 2,696
    Likes: 146, Points: 63, Legacy Rep: 2229
    Location: Adelaide, South Australia

    Leo Lazauskas Senior Member

    It is not possible to separate out the wave resistance due to thickness effects of the rudder and keel. The only way would be to run the code with canoe alone, and then with canoe+keel.

    Also, Michlet does not calculate the wave resistance of a lifting keel or rudder.

    Finally, Michlet is NOT suitable for most yachts because they have a L/B ratio that is too small for thin-ship theory.

    Good luck!
    Leo.
     
    Last edited: Mar 27, 2011
    1 person likes this.
  3. Remmlinger
    Joined: Jan 2011
    Posts: 242
    Likes: 20, Points: 18, Legacy Rep: 172
    Location: Germany

    Remmlinger engineer

    Thank you for the immediate answer!
    I am not surprised, I just wanted to make sure not to draw wrong conclusions.
    Regards
    Uli
     
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