29 Monte Carlo Trajetory Simulations of a Roll Stabilized 122mm Artillery Rocket

Modernization of conventional/dumb artillery projectiles is an emerging trend in the armies all around the world. Nature of current conflicts has increased the demand of surgical strike weapons in order to neutralize the targets with minimum of collateral damage. Researchers are striving to modify the unguided rockets by retrofitting guidance and control kits. In this research work a few modifications in the physical configuration of conventional unguided 122mm rocket with wrapped around tail fins, are suggested in order to make its guidance and control viable by means of low cost onboard sensor arrangements. Wrapped around canted tail fins are suggested to be replaced by straight tail fins, and front canards incorporated in order to provide means for aerodynamic maneuvering. A six degree of freedom dynamic model has been developed for the proposed projectile configuration, and Monte Carlo trajectory simulations have been performed to observe the impact point dispersion under the effect of statistical variations in different parameters. Simulation results indicate that the projectile remains stable in flight and impact point dispersions are in tractable limits.