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The correct term for those pieces is "fragments” (nicknamed “splinters” or “shards”). [1] Preformed fragments can be of various shapes (spheres, cubes, rods, etc.) and sizes and are normally held rigidly within some form of matrix or body until the high explosive (HE) filling is detonated.
Using his ballistic tables along with Bashforth's tables from the 1870 report, Mayevski created an analytical math formula that calculated the air resistances of a projectile in terms of log A and the value n. Although Mayevski's math used a differing approach than Bashforth, the resulting calculation of air resistance was the same.
the mass of the projectile is: m lb in pounds; m gr in grains; d in is the diameter of the projectile in inches; The sectional density defined this way is usually presented without units. In Europe the derivative unit g/cm 2 is also used in literature regarding small arms projectiles to get a number in front of the decimal separator. [citation ...
The Spall and Maryak approach applies when the shot data represent a mixture of different projectile characteristics (e.g., shots from multiple munitions types or from multiple locations directed at one target).
Bullet parts: 1 metal jacket, 2 lead core, 3 steel penetrator. Terminal ballistics is a sub-field of ballistics concerned with the behavior and effects of a projectile when it hits and transfers its energy to a target. Bullet design (as well as the velocity of impact) largely determines the effectiveness of penetration. [1]
Some anti-armor weapons incorporate a variant on the shaped charge concept that, depending on the source, can be called an explosively formed penetrator (EFP), self-forging fragment (SFF), self-forging projectile (SEFOP), plate charge, or Misnay Schardin (MS) charge. This warhead type uses the interaction of the detonation waves, and to a ...
The trajectory then generalizes (without air resistance) from a parabola to a Kepler-ellipse with one focus at the center of the Earth (shown in fig. 3). The projectile motion then follows Kepler's laws of planetary motion. The trajectory's parameters have to be adapted from the values of a uniform gravity field stated above.
Projectile path values are determined by both the sight height, or the distance of the line of sight above the bore centerline, and the range at which the sights are zeroed, which in turn determines the elevation angle. A projectile following a ballistic trajectory has both forward and vertical motion.