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Aerodynamic Characteristics of .50 Ball, M33, API, M8, and APIT, M20 Ammunition.

机译:.50球,m33,apI,m8和apIT,m20弹药的空气动力学特性。

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The caliber .50 Ball, M33, API, M8, and APIT, M20 munitions were recently fired in the BRL spark photography ranges, to determine the complete aeroballistic characteristics required for a fire control study. Aerodynamic drag, gyroscopic stability, dynamic stability and yaw damping rates were determined at supersonic, transonic and subsonic speeds. The observed non-linear behavior of the Magnus moment coefficient predicts a slow arm limit cycle yaw at transonic and subsonic speeds. (aw)

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