| 摘要 |
The disclosure relates to a method and an apparatus for reducing the spread of hit pattern for a rotationally-stabilized ammunition unit in the form of a projectile, shell or the like (1) which is discharged in a ballistic trajectory from, for example, an artillery piece towards a target which is to be combated. By dynamic balancing of the shell (1) a reduction will be affected to the air resistance between different shells, hit probability being increased. According to the present invention, the inclination between the main axis of inertia of the shell and the geometric axis of the shell case are measured, whereafter these axes are set in parallel in that an adjustment weight (2) is mounted on one side of the point of gravity of the shell seen in its longitudinal direction. The adjustment weight (2) preferably consists of a disk or washer provided with an eccentric recess (4) for suitable weight and mass eccentricity. |
