Introduction of control pins in the vicinity of missile fins for roll and yaw control.

摘要

A recent study performed by the United States Army Research Laboratory has shown placement of diametrically opposed pins in the vicinity of missile fins is capable of producing a roll torque. To perform a follow up investigation on the project, an opposing pin model was created to determine whether a yaw moment instead of roll torque could be imposed on the projectile. A Matlab code was written to estimate the roll torque and fin normal force generated by the two pin configurations. The code was calibrated and verified by results from Computational Fluid Dynamics and spark range test data. The effect of the pin length, radius, and placement on the roll torque and normal force were investigated. Finally, trajectory simulations were performed in PRODAS to predict the roll and yaw performances of the projectile as it reaches a downrange distance of 100 m.