Abstract
The influence of the factor of vertical oscillation of academic boats on rowing effectiveness parameters defined as the change in the area of wetted surface of the boat caused due to the mean its draught increment is analysed in the paper. The indicators of rowing effectiveness conditioned by the factor of free oscillation of the boat are calculated for academic boats of different classes; the dependences of the effectiveness indicators on some of the different hull parameters of boats and on intensity of the rowers vertical effect on to the seat were determined; practical recommendations for the effectiveness increase are presented. http://dx.doi.org/10.5755/j01.mech.17.3.508
Highlights
When skilled competitors excellent in their techniques are competing the victory can depend on parts of a second that’s why all the factors having an influence on the rowing process should be evaluated not just the main of them
The phenomenon of vertical oscillations was noticed by the authors [1], when they were analyzing parameters of forced oscillations of keel boats recorded by other authors
The free oscillations are excited by force impulses which act on the seat during each stroke
Summary
When skilled competitors excellent in their techniques are competing the victory can depend on parts of a second that’s why all the factors having an influence on the rowing process should be evaluated not just the main of them One of such factors is vertical oscillation of academic boat. The facts of mentioning the existence of vertical free oscillations in rowing were not met in literature These oscillations can hardly be distinguished when visually observing the rowing process due to clearly expressed and effective movements of a rower. When rowing the academic boat human body contacts the boat in three places: by feet, by oars and by seat At these points interaction forces between human body and the boat appear and they have an effect on the boat’s movement.
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