Moment of inertia

Discussion in 'Sailboats' started by ghisio, Oct 13, 2007.

  1. ghisio
    Joined: Oct 2007
    Posts: 4
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: italy

    ghisio New Member

    Hi,
    I am a student working on a thesis about the effect of moment of inertia in yaw during a tack...Can anybody of you give me some information or tell me where to find any?
     
  2. MikeJohns
    Joined: Aug 2004
    Posts: 3,192
    Likes: 208, Points: 63, Legacy Rep: 2054
    Location: Australia

    MikeJohns Senior Member

    Well if you make a call on the pivot point and know your mass distribution you can calculate this simply enough, in real life the pivot point moves, another problem will be the damping coefficient.
    For texts on this look at control systems textbooks particularly rudder control system design for ships.
     
  3. mgpedersen
    Joined: Feb 2006
    Posts: 27
    Likes: 1, Points: 3, Legacy Rep: 12
    Location: seattle

    mgpedersen Junior Member

    Tacking Model

    Is this what you're looking for? As an added bonus it has all they funny math symbols and stuff :)
     

    Attached Files:


  4. Petros
    Joined: Oct 2007
    Posts: 2,934
    Likes: 148, Points: 63, Legacy Rep: 1593
    Location: Arlington, WA-USA

    Petros Senior Member

    Damping could be significant, consider that a light weight catamaran comes about real sluggishly because of the hulls dragging in the water. A similar, or even much heavier mono-hull can often be whipped around the centerboard pretty quickly.
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.