This note explains why casting a loop with a positive angle of attack is advantageous in distance fly casting. Several loop shapes, one with a positive angle of attack, one with a negative angle of attack, and two symmetrical loops with zero angle of attack are studied. For each loop, we compute the vertical drag component, i.e., the “lift.” It is found that a loop with a positive angle of attack generates lift about four times larger than a symmetrical loop. Thus, loops with positive angles of attack stay “aerialized longer” which is consistent with observations made by (competition) distance fly casters.
1.
Spolek
, G. A.
, 1986
, “The Mechanics of Flycasting: The Fly Line
,” Am. J. Phys.
, 54
(9
), pp. 832
–835
.2.
Lingard
, S.
, 1988
, “Note on the Aerodynamics of a Fly Line
,” Am. J. Phys.
, 56
(8
), pp. 756
–757
.3.
Robson
, J. M.
, 1990
, “The Physics of Flycasting
,” Am. J. Phys.
, 58
(3
), pp. 234
–240
.4.
Hoffmann
, J. A.
, and Hooper
, M. R.
, 1998
, “Fly Rod Response
,” J. Sound Vib.
, 209
(3
), pp. 537
–541
.5.
Hendry, M. A., and Hubbard, M., 2000, “Dynamic Finite Element Simulation of Fly Casting and Its Potential Use in Fly Rod Design,” Proceedings: The Engineering of Sport, Blackwell Science, London, pp. 407–414.
6.
Gatti-Bono
, C.
, and Perkins
, N. C.
, 2002
, “Physical and Numerical Modelling of the Dynamic Behavior of Fly Line
,” J. Sound Vib.
, 255
(3
), pp. 555
–577
.7.
Watanabe, T., and Tanaka, K., 2002, “Modelling the Dynamics of a Fly Line,” Proceedings The Engineering of Sport, Blackwell Science, London, pp. 353–359.
8.
Gatti-Bono
, C.
, and Perkins
, N. C.
, 2003
, “Comparison of Numerical and Analytical Solutions for Fly Casting Dynamics
,” J. Sports Eng.
, 6
(3
), pp. 165
–176
.9.
Gatti-Bono, C., and Perkins, N. C., 2003, “Numerical Model for the Dynamics of a Coupled Fly Line/Fly Rod System and Experimental Validation,” J. Sound Vib., in press.
10.
Perkins, N. C., and Richards, B., 2003, “Dissecting Your Casting Stroke,” Fly Fisherman, Primedia Magazines, Dec.
11.
Krieger, M. K., 1987, The Essence of Flycasting, Club Pacific, San Francisco, CA.
12.
Wulff, J., 1987, Fly Casting Techniques, The Lyons Press, Guilford, CT.
13.
Kreh, B., 1991, Modern Fly Casting Method, Odysseus Editions, Birmingham, AL.
14.
Sarpkaya T., and Isaacson M., 1981, Mechanics of Wave Forces on Offshore Structures, Van Nostrand Reinhold, New York.
Copyright © 2004
by ASME
You do not currently have access to this content.
