When studying the movement of a modern artillery shell, special attention should be paid to the question of the correct flight of the shell, on which the flight range, accuracy, the correct functioning of tubes and fuses and a number of other phenomena depend to a very large extent. In turn, the correctness of flight is closely related to the rotational movement of the projectile near its axis of symmetry, and this rotational movement is communicated to the projectile precisely in order to ensure the correctness of flight.