An experiment of improved stow net: characteristics of upthrust float and shearing hood
1980
Kim, Y.H. | Ko, K.S. (National Fisheries Univ., Busan (Korea R.))
The model of stow net under the various combination including water velocity, spherical floats and elevating floats was examined with the shearing hood instead of upper beam. Spherical floats maintain their buoyancy at the same level when the speed increases, only the drag increases and effects some reduction in the fishing height. To eliminate this shortcoming, floats have some hydrodynamic lifting force which increases with increasing speed. Six kinds of model shearing hood depending on the angle of attack were used to study the characteristics of the shearing hood. When the angle of attack is 30, the lift and drag coefficient reveal 1.36 0.84 respectively. Experiment on the 5x8 cm shearing hood to investigate the suitability for model stow net was also done
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