The canister in this type of projectile

i CHARGE PROP T42

CHARGÉ PROPELLING T42 FOR (20 M M GUN M 58 (FOR USE WITH HEAT-T M469)

i CHARGE PROP T42

CHARGÉ PROPELLING T42 FOR (20 M M GUN M 58 (FOR USE WITH HEAT-T M469)

Figure 4-4. High-explosive antitank projectile.
Figure 4-5. Burster chemical projectiles.

should not be confused with the canister that is a component of a fixed-round projectile.

(6) Illuminating. This type of projectile (fig. 47) is used to illuminate a target area under conditions of reduced visibility. The projectile is hollow and contains a payload consisting of a parachute and illuminant assembly. The illuminant is ignited and the parachute and illuminant assembly are ejected from the projectile by an expelling charge adjacent to a time fuze. The parachute and burning illuminant assembly slowly descend, lighting the target area.

(7) Armor-piercing.

(a) Armor-piercing (AP) projectiles (fig. 4-8) contain a core of heat-treated, high-carbon alloy steel. The head is hardened steel for penetration of armor. The body is tough to withstand impact and twisting action of the projectile at high angles of obliquity. A windshield is generally secured to the head of the projectile to assure adequate ballistics. A tracer is present in the base of the projectile.

(b) Armor-piercing capped (APC) projectiles (fig. 4-9) are designed to penetrate face-hardened armor plate. The nose is capped with forged, heat-treated alloy steel to have a hard exterior surface and a relatively soft core. On impact, the hardened exterior of the cap destroys the surface of the armor. The softer core of the cap protects the hardened point of the projectile by distributing impact stresses over a large percentage of the area of the head. The projectile ultimately penetrates the target by kinetic energy. A tracer may be present in the base end of the fuze.

(c) Armor-piercing discarding sabot (APDS) projectiles consist of a dense core of tungsten carbide covered with a steel sheath and a bore-and-sleeve assembly (sabot). The sabot, which converts the core of the projectile to the same size as the gun barrel, is discarded after the projectile leaves the bore of the weapon.

(d) Hypervelocity (velocities above 3,500 fps) armor-piercing (HVAP) projectiles are relatively lightweight with an armor-piercing core of tungsten carbide. The core, a steel base containing a tracer element, an aluminum body and

Figure 4-6. BE chemical (smoke) projectiles.

nose plug, and an aluminum windshield comprise the HVAP-T projectile.

(8) Antipersonnel (APERS). Antipersonnel cartridges are employed against enemy personnel and light materiel. The projectile of APERS cartridges (fig. 4-10} carries a payload of flechettes (fin-stabilized steel fragments). These cartridges are fitted with MT fuses which may be set for muzzle action or range.

(9) Canister. The canister projectile (fig. 4-11) consists of a light metal case filled with flechettes, steel slugs or, in some projectiles of early design, steel balls. It contains no explosive and is fired point blank at short ranges (up to 600 feet) for effect against personnel. When the projectile leaves the muzzle of the weapon, the case breaks open, scattering the steel slugs or balls in the manner of shot from a shotgun shell. Flechettes are dispersed in conical pattern.

(10) Leaflet. These projectiles are essentially

BE projectiles adapted for dispersing literature.

(11) Improved Conventional Munitions (ICM). These munition embody a unique design to control the number, size, and distribution of fragments produced when the munition functions. Projectiles 105MM or larger (fig. 4-6.1), warhead sections (fig. 4-6.2), and cluster bomb units (CBU) (fig. 4-6.3) carry a payload of small, individually fused munitions. These items have fusing and release systems which dispense the submunitions at an altitude sufficient to permit arming prior to striking the target. Hand grenades, 40MM cartridges, and land mines each contain a highexplosive fragmentation unit.

(12) Dual purpose munitions. These munitions (fig. 4-16.4) combine the capabilities of penetrating steel armor and inflicting personnel casualties in the vicinity of the target.

Was this article helpful?

0 0

Post a comment