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CARTRIDGE, 90 MILLIMETER APERS-T, M580 |
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Filler and Weight | ||
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| 4200, 8 gr, flechettes, | |||
| Body and Overall Weight | |||
| Steel/aluminum, 41.25 lb | |||
| Color | |||
| Olive drab w/white marking and white diamonds | |||
| Type of Round, DODIC | |||
| APERS-T, 1315-C275 |
| Description: |
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| The projectile consists of an aluminum forward body, a steel connector, and a hollow steel base. Threaded to the forward body is an aluminum fuze adapter containing four radially oriented detonators and an axially oriented flash tube, relay and detonator. The central steel flash tube connects the projectile base to the det onator in the fuze adapter. The body is loaded with flechettes and also contains a yellow dye mixture that serves as a spotting charge. A plastic bag of flake propellant is located in the hollow base. A mechnical-time fuze is assembled to the fuze adapter, and a tracer is attached to the base of the projectile. The projectile is crimped to a cartridge case loosely filled with propellant and fitted with a percussion primer. |
| Use: |
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| This fixed cartridge is fired from 90mm tube, relay and detonator. The central steel guns and is for antipersonnel use at both close and long ranges. The cartridge is particularly effective against personnel in dense foliage. |
| Functioning: |
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| When the weapon is fired, the primer ignites the propellant. The burning propellant ignites the tracer and creates gases which propel the projectile from the gun tube. The fuze will arm immediately and will function according to the time setting. The fuze functions as soon as the projectile leaves the weapon if set for muzzle action. If set for range, the fuze will function 75 to 100 meters short of set range. This built-in standoff is designed to assure maximum application of the dispersion pattern to the target. Concurrently with fuze functioning, the four radially oriented detonators and the axially oriented detonator and relay in the fuze adapter are exploded. Detonation of the radially oriented detonators rips open the forward skin of the projectile ogive, permitting the flechettes in the forward section to be acted upon by centrifugal force. The axially oriented detonator and relay flash through the tube to ignite the base charge. Pressure from the burning charge forces the flechettes and spotting charge forward and out of the projectile. The combination of forward and centrifugal forces results in a conical dispersal pattern. The spotting charge marks the approximate fuze functioning point, allowing adjustment of fire for maximum effect. |
| Munition Components: |
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| Data Source: |
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| TM 43-0001-28 April 1977 |
| Munitions Tech Data Sheet: |
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