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118ft trout distance cast
Purpose
The purpose of this section is to show:
· Results for a simulated trout distance competition cast about as
measured by “U. Röijezon et al”.
Input, casting strokes
The competition cast is presented as two
simulations:
1. A periodic 80ft false cast.
2. A 118ft delivery cast, starting from the periodic false cast.
The 80ft periodic false cast and the 118ft
delivery cast were calculated using the following boundary conditions:
Notes:
· The max angular velocity, the max translational velocity and the
max haul velocity were given values about as reported in “U. Röijezon et al, An
Initial Study on the Coordination of Rod and Line Hauling Movements in Distance
Fly Casting”. Also, the relative timings of the max velocities
were set to agree with reported values.
· The boundary condition graphs above are shown for one period of
the 80ft periodic cast.
· Compare with 133ft
trout distance cast.
Input, equipment
Accurate rod data for the specific rods used
in “U. Röijezon et al, An Initial Study on the Coordination of Rod and Line Hauling
Movements in Distance Fly Casting” was not available and therefore, rod data
for a 10wt rod was used in the simulations:
Notes:
· The fly line data is set to model a Scientific Anglers Expert
Distance 5wt line.
· The leader has a diameter about as is used in competitive
casting.
· The “fly” attached at the end of the leader models a “piece of
yarn” with a terminal velocity at free fall of 1.2 m/s.
Output, animation
Click on the graph below to start animation.
The animation shows comparatively small loop radii for the
periodic cast and for the delivery cast. This is a requisite for longer casts
and depends on how the rod is loaded i,e., the relative magnitudes and timings of angular motion,
translation and haul. Competitive casters manage this “balancing act” and many
produce casts longer than the one presented here.
Output, graphs
The graphs considered most relevant are
presented below. For explanations to the graphs please
see the 50ft oh ref. cast.
Output, energies and work