Javelin

Details Javelin Javelin

1980-11-17

1982-07-06

Apley, Richard J.

Undertaking

A63B 6500

Patent

active

043379400

ABSTRACT:
The aerodynamic center of pressure of a javelin is located preferably from 0 to 5 cm aft of the center of gravity at an angle of attack of relative wind of 90.degree. to the axis of the javelin, and this is achieved by giving the javelin a proper surface shape and finish within present athletic competition rules for javelins. The javelin is also preferably marked with an indicia of the distance between the aerodynamic center of pressure and the center of gravity to inform the athlete of the javelin's flight characteristics to aid him in making the best possible throw.

REFERENCES:
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patent: 3183002 (1965-05-01), Updaw
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"Arrow Stability: Dictionary of Guided Missiles and Space Flight," 1959, p. 54, Van Nostrand Co., Inc.
"Archery: The Technical Side," 1947, Hickman et al; pp. IV, V and 267.
Marks' Mechanical Engineers' Handbook, T. Baumeister, Sixth Ed., 1958, pp. 3-18.
"Modern Airmanship," N. D. Van Sickle, 4th Ed., 1971, p. 67.

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