Page 16 - Сигурност и отбрана - брой 2 - 2023

Сигурност и отбрана, брой 2, 2023 г. Научно списание

Table 1. Projectiles muzzle velocity

With contactless Without contactless
№
suppressor (m/s) suppressor (m/s)
1 358 363
2 339 355
3 346 329
4 359 354
5 352 342

Average 350,8 348,6

In accordance with the adopted methodology, perforations that do not
fall within the determined by the weapon platform manufacturer diameter of
80 mm (Schatz, 1993) are not included in the raw data for the analysis.
The determination of the grouping of the hits is done by measuring the
diameter (d) of the circle containing the perforations of every series. The
value of d is determined by constructing a circumscribed circle around the
centers of the two mutually most distant perforations, as shown in Figure 2.
The measurement of the circles’ diameters as well as their average
values by groups are shown in Table 2.

Table 2. Dimensions of the circle (d) containing all the perforations.

With contactless Without contactless
Series
suppressor (mm) suppressor (mm)
1 49 41
2 61 55
3 74 67

4 71 75
5 67 63
Average 64,4 60,2

The grouping of the hits is directly dependent on the size of the circle
containing all the perforations. The lower the value of d, the greater the level
of grouping. The analysis of the data presented in Table 2 shows that when
shooting with a contactless suppressor, the grouping worsens, and in this
particular case the average difference is 4.2 mm.

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