Canoe paddle resonance characteristics and modelling

Abstract

Canoe paddles have been in continuous use for thousands of years. Over that period, the paddle has remained virtually unchanged in basic form and materials. Today, paddles are produced in many different designs by a large number of manufacturers. Prominent within the many factors differentiating the best paddles from the worst is their propensity to resonate during use. This resonance has been so prevalent historically that it has been given its own name: a paddle’s song. The major drawback with paddle resonance is that it is accompanied with the penalty of increased fluid resistance. Paddle manufacturers have long tried to reduce or eliminate paddle resonance, but it is still recognized by paddlers as a significant factor in choosing an optimal paddle.

This study examined canoe paddle resonance in laboratory, open water, and computer modelling environments. The goal was to investigate the characteristics of this commonly occurring phenomenon and validate the techniques used in the modelling studies. The hypothesis tested in this paper is that by employing and comparing scientific measurement and modelling techniques it would prove possible to examine the relationship between physical paddle structure, fluid-based excitation, and resonance observed during paddle use.

The obtained results indicated that the paddle being studied displayed a number of different characteristic resonance patterns or modes depending on the velocity of water flow over the blade. The results of the computer modelling studies on the resonance modes were found to be in good agreement with the observations made in laboratory and open water experiments.

Keywords

canoe paddle resonance computer modelling fluid structural interaction tap tuning

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References

Fowler

D. E.

The mechanics of canoeing. M.Ed. Thesis, Springfield College, Springfield Massachusetts, 1936.

Plagenhoef

Biomechanical analysis of Olympic flatwater kayaking and canoeing. Res. Quart. Exercise Sport, 1979, 50(3), 443–459.

Nolan

G. N.

Bates

B. T.

A biomechanical analysis of the effects of two paddle types on performance in North American canoe racing. Res. Quart. Exercise Sport, 1982, 53(1), 50–57.

Summer

Sprigings

E. J.

Bugg

J. D.

Heseltine

J. H.

Fluid forces on kayak paddle blades of different design. Sports Engng, 2003, 6, 11–20.

Sprigings

McNair

Mawston

Sumner

Boocock

A method for personalizing the blade size for competitors in flatwater kayaking. Sports Engng, 2006, 9, 147–153.

Caplan

Coppel

Gardner

A review of propulsive mechanisms in rowing. Proc. IMechE, Part P: J. Sports Engineering and Technology, 2010, 224(1), 1–8.

Blevins

R. D.

Vortex-structure interaction. In Fluid vortices (Ed. Green

S. I.

), 1995, pp. 533–574 (Kluwer, Dordrecht, The Netherlands).

Williamson

C. H. K.

Vortex dynamics in the cylinder wake. Ann. Rev. Fluid Mech., 1996, 28, 477–539.

Yarusevych

Sullivan

P. E.

Kawall

J. G.

On vortex shedding from and airfoil in low-Reynolds-number flows. J. Fluid Mech., 2009, 632, 245–271.

10.

Siminoff

R. H.

The art of tap tuning, Hal Leonard Corporation, Milwaukee, Wisconsin, 2006.

11.

de Zeeuw

C. H.

Marks’ standard handbook for mechanical engineers, eighth edition, 1978 (McGraw-Hill Book Company, ).

12.

The encyclopedia of wood, US Department of Agriculture, 2007 (Skyhorse Publishing New York).

13.

Blevins

R. D.

Formulas for natural frequency and mode shape, 1979 (Van Nostrand Reinhold Company, Toronto, Canada).

14.

Heberton

E. G.

Canoeing wilderness waters, 1975 (A.S. Barnes and Company, Cranbury, New Jersey).