Saturday, August 9, 2014

Static vs. Dynamic

Static analysis

  • wind speed and direction is constant
  • boat is operating at constant velocity
  • all forces on boat are at steady state
  • race course is of unlimited length
  • tacking is instantaneous
  • mark rounding is instantaneous
  • boat is not hiking
  • ice conditions are constant
  • boat heading is unchanged
  • boom angle is constant
  • fairly easy to compute
  • not realistic, nor representative in real world racing

Dynamic analysis
  • wind speed can vary in intensity and direction
  • boat can be accelerating or decelerating
  • race course is size limited
  • real world tacking is dynamic and complex
  • what are practical alternatives to deal with hiking
  • how to avoid runner slip
  • how much time is lost by not sailing a hitch at downwind mark in heavy air