Abstract To further investigate the aerodynamic and ballistic trajectory characteristics of a certain type of ammunition under the influence of low-temperature meteorological factors, based on computational fluid dynamics and rigid body dynamic trajectory equations, numerical calculations and analysis of the aerodynamic characteristics and 6-degree-of-freedom rigid body ballistic trajectory, as well as low-temperature environmental ballistic trajectory flight tests, were conducted on this type of ammunition. The research shows that under constant atmospheric pressure, as the ambient temperature decreases, the pressure on the bullet surface increases, the aerodynamic parameters of the bullet decrease, and the convergence trend of the bullet’s ballistic trajectory angle of attack weakens significantly; under constant low-temperature, as the atmospheric pressure decreases, the pressure on the bullet surface decreases, the changes in the aerodynamic parameters of the bullet are small, and the convergence trend of the bullet’s ballistic trajectory angle of attack increases.
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