Improved Dispersion of a Fin-Stabilized Projectile Using a Passive Moveable Nose

Report No. ARL-CR-464
Authors: Mark Costello and Raditya Agarwalla
Date/Pages: April 2001; 44 pages
Abstract: A key and often quoted metric associated with gun systems is impact point accuracy. The extent of impact dispersion is a complex function of a battery of parameters, including gun geometry and tolerances, the fire control system, projectile manfacturing tolerances, etc. The work reported here investigates potential impact point accuracy improvement for a penetrator-type projectile realized by replacing the rigid nose cone wind screen with a passive gim balled nose. By comparing the impact point dispersion of a rigid projectile with a similar gim balled nose projectile, it is shown that impact point accuracy can be significantly improved. For the example penetrator projectile considered, impact point dispersion is reduced by more than 50%.
Distribution: Approved for public release
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Last Update / Reviewed: April 1, 2001