Journal of Computations & Modelling

Free-Flight Trajectories of Small Caliber Projectiles and In-Bore Yaw Phenomenon Effects

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• Abstract

  This paper investigates the effects of in bore-yaw phenomenon on lateral throw-off and aerodynamic jump behavior for small caliber rotational symmetric projectiles launched horizontally at supersonic firing speeds and various altitudes from subsonic air vehicles. The ammunition used is the caliber .50 API M8 bullet type firing from M2 machine automatic gun. The projectile is considered to be eccentrically engraved, tilted as it enters the rifling, and it is assumed that the tilt persists throughout its passage through the rifled barrel of the used weapon system. The modified linear 6-DOF flight simulation modeling is applied for the bullet free-flight trajectory predictions.