About mathematical modeling of the three-dimensional tra jectory bullet’s motion, changing in a given direction
A generalized motion’s mathematical model of an asymmetric uncontrolled rotating body (bullet) in air in three-dimensional space with resistance forces given in the form of approximating functions is developed. A mathematical scheme for the bullet’s motion on a trajectory is described and an aerodynamic design model for determining the forces acting on the body from the software product ANSYS CFX is compiled. Verification of the theoretical drag force, obtained from the ANSYS CFX with the firing tables was carried out, determined deviations from practical values. The external ballistics for the 7H6 bullet was calculated in accordance with the developed mathematical model under certain initial conditions for the bullet’s location in the barrel and the relative errors of the main trajectory parameters were analyzed. Directions of further research and the main results of the work are determined.