和船人力推進における熟練者の櫓漕ぎ技量評価-IV : 櫓杭3分力計の製作とその櫓漕ぎ出力から見た評価

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In the former paper, we reported the development of a measuring system which quantitatively compared the skills of veteran scullers in working a "Ro-scull" with those of inexperienced ones. Consequently, we found that a veteran sculler worked a Ro-scull with an almost constant force and period, and it became evident that the propulsion efficiency of veteran sculler had been reached to around 20% of the total resistance corresponding to the boat's speed. However, the results of above tests were not useful to find out how the driving power could be generated by working single Ro-scull and what forces were acting to the scull lock fulcrum: Therefore, we experimentally produced a three-component force sensor in order to study the mechanism of driving power and to approach the skill of veteran sculler by measuring the three-component force acting to the scull lock. We corrected the output of the produced three-component force sensor and decided that it fitted for use. The following knowledge was acquired by a test using a three-component force sensor. (1) In the result of the test of working a Ro-scull by four scullers including two veterans, the veterans had the large output force in horizontal of left and right direction compared to the force pressing down the scull lock. (2) When the scull lock was moved from the original position, the output waveform had the tendency to show partiality to one side compared to that in the case of original position.
社団法人日本航海学会の論文
2006-09-25

和船人力推進における熟練者の櫓漕ぎ技量評価-IV : 櫓杭3分力計の製作とその櫓漕ぎ出力から見た評価

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