Optimal Javelin Release

This paper reports a study of the optimal release of men's and women's new and old rule javelins involving modeling, simulation, optimization (including sensitivity analysis), and simulation evaluation. Because of the lack of repro-ducibility in earlier results of two-dimensional flight simulation research, the paper presents a continuation of the two-dimensional model used previously. As expected, each javelin was found to have a different optimal release for a given individual, and the optimal release varied with the thrower's nominal release speed. A limited degree of simulation evaluation was achieved by comparison of the model and simulation results with measured throws. Within the constraints of measurement error, this tended to support both the adequacy of the two-dimensional model and the results of the simulations for such high standard throws. However, further experimental studies to quantify the angle of yaw (sideslip) in measured wind conditions are recommended to assess any changes needed to ...

[1]  A. G. Mamalis,et al.  HUMAN BODY DYNAMICS: IMPACT, OCCUPATIONAL AND ATHLETIC ASPECTS , 1982 .

[2]  Derek Clarke Scigraph and regress: Graph plotting and curve fitting programs for the BBC microcomputer , 1987 .

[3]  M Hubbard,et al.  Optimal javelin trajectories. , 1984, Journal of biomechanics.

[4]  L. P.,et al.  Modern Developments in Fluid Dynamics , 1939, Nature.

[5]  Mont Hubbard,et al.  Optimum Release Conditions for the New Rules Javelin , 1987 .

[6]  M Hubbard,et al.  Simulation of javelin flight using experimental aerodynamic data. , 1984, Journal of biomechanics.

[7]  Russell Best,et al.  JAVELIN FLIGHT SIMULATION-INTERACTIVE SOFTWARE FOR RESEARCH AND COACHES , 1990 .

[8]  Granville Sewell Plotting contour surfaces of a function of three variables , 1988, TOMS.

[9]  Juris Terauds,et al.  A comparative analysis of the aerodynamic and ballistic characteristics of competition Javelins , 1972 .

[10]  H. Kunz Effects of ball mass and movement pattern on release velocity in throwing , 1974 .

[11]  Ning Zhiheng,et al.  Biomechanical analysis of the javelin throw , 1992 .

[12]  Juris Terauds Biomechanics of the javelin throw , 1985 .

[13]  H. R. Hopkin A scheme of notation and nomenclature for aircraft dynamics and associated aerodynamics , 1968 .

[14]  Chih-Ming Ho,et al.  Unsteady flow around an ogive cylinder , 1986 .

[15]  M. J. Box,et al.  Non-linear optimization techniques; , 1969 .

[16]  R. Bartlett,et al.  The biomechanics of javelin throwing: a review. , 1988, Journal of sports sciences.

[17]  Russell Best,et al.  Computer predicted optimal release characteristics for varying ability female javelin throwers , 1989 .

[18]  J. E. Glynn,et al.  Numerical Recipes: The Art of Scientific Computing , 1989 .

[19]  M Hubbard,et al.  Rapid and accurate estimation of release conditions in the javelin throw. , 1989, Journal of biomechanics.

[20]  R M Bartlett,et al.  A three-dimensional analysis of javelin throwing technique. , 1993, Journal of sports sciences.

[21]  W. Red,et al.  Javelin Dynamics Including Body Interaction , 1977 .