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LARGE CALIBER AMMUNITION

105mm M456A2 HEAT-T

LARGE CALIBER AMMUNITION

105mm M456A2 HEAT-T

105mm M456A2 HEAT-T

High Explosive Anti-Tank-Tracer

Purpose: This cartridge is a high explosive antitank cartridge and is intended for use in 105mm guns against armored targets. It has a dual role capability in killing dismounted infantry by blast and fragmentation and in destroying lightly armored and non-armored vehicles and bunkers.

Description: The steel body projectile is fitted with a plastic obturator, a threaded standoff spike assembly, a fin and boom, and a PIBD fuze. A funnel-shaped copper liner within the body shapes the explosive charge of Comp B. A piezoelectric element retained in a nose cap is fitted to the spike assembly and is connected to the BD fuze in the body. The fin is threaded to receive a tracer.

Operation: The electrically initiated primer ignites the propelling charge. Gases produced by the burning propellant propel the projectile from the gun and ignite the tracer, which burns for a minimum of 2.5 seconds. On impact, fuze functioning detonates the projectile and cone collapses, creating a high-velocity focused shock wave and a jet of metal particles that penetrates the target.

Difference Among Models: The two models in the M456 series differ in the use of an impact switch assembly. The addition of the impact switch assembly provides for a higher functioning reliability in that initiation can occur upon contact with any part of the standoff spike assembly, i.e., improved performance on irregular surfaces and graze functioning.

105mm M456A2 HEAT-T Technical Specifications

Type Classification

STD AMCTC 4677 dtd 1966 OBS MSR 11756003

Complete round: Type

HEAT-T

Weight

49 lb (22.2 kg)

Length

39.6 in (1005.8 mm)

Cannon used with

M68 and L7

Projectile: Body material

Steel

Color

Black w/yellow markings

Filler and weight

Comp B 2.14lbs.

Components: Cartridge case

M148A1B1

Propellant

M30

Primer

M83

Tracer

M13

Fuze

PIBD-M509A1

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GD 163,91 +0,46 +0,28%