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Research Papers

Analytical Approach to Ballistic Dispersion of Projectile Weapons Based on Variant Launch Velocity

[+] Author and Article Information
Michael M. Chen

Ballistic Structure and Launch Dynamics Branch, Weapons and Materials Research Directorate, U.S. Army Research Laboratory, RDRL-WML-G, Aberdeen Proving Ground, MD 21005michael.m.chen@us.army.mil

J. Appl. Mech 78(3), 031015 (Feb 16, 2011) (9 pages) doi:10.1115/1.4003430 History: Received November 05, 2010; Revised December 23, 2010; Posted January 12, 2011; Published February 16, 2011; Online February 16, 2011

This study quantifies the contribution of variant projectile velocity at a gun muzzle to its dispersion at an aim point from an analytical approach. The dispersion was formulated on the basis of stochastic physical conditions including potential crosswind effect. As a result, the statistical quantities of projectile impact distribution could be obtained from the stochastic formulation. In addition, this research proposes correction factors that may be needed when comparing dispersion in angular mil at multiple downrange distances. The significance of the correction factors was demonstrated through a few application examples.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

Geometric relationship between dispersion and downrange distance

Grahic Jump Location
Figure 2

Illustration of projectile drop distance due to gravity as the initial velocity going downward

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Figure 3

Illustration of the increase in the dispersion of target impact points due to crosswind

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