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PROJECTILE, 155-MILLIMETER: SMOKE WP, M110A1 (M110E2) M110A2 (M110E3) |
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Filler and Weight | ||
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| White Phosphorous, | |||
| Body and Overall Weight | |||
| Steel, 98.49 lb nominal | |||
| Color | |||
| Light green w/yellow band and light red markings | |||
| Type of Round, DODIC | |||
| Smoke WP, 1320 -D550 |
| Description: |
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| The projectile is essentially a steel shell filled with 15.6 lb of white phosphorous (WP) with an M54A1 burster extending through the center, and an adapter in the nose of the projectile is threaded to receive the fuze. The burster tube is made from high strength aluminum alloy and is filled with Composition B5. The M110A2 has an aluminum plug which seals the base of the tube. The M110A1 (the earlier model) has a plastic plug sealing the base of the tube. The tube is secured in the projectile well by a threaded cap assembled below the fuze well cup. For shipment and handling, a lifting plug is installed in the fuze cavity. A rotating band encircles the projectile near the base and is protected by a grommet to be removed before loading the projectile in the weapon. A PD fuze is normally used with this projectile, although an MTSQ fuze may also be employed. Except for the WP contents, this projectile is the same as the projectile H/HD M110, and the ballistics are the same as the HE M107 projectile. The M110A1 and M110A2 projectiles both contain a comp B5 burster providing greater high temperature tolerance than the tetrytol bursters used in previous models of the M110 series WP projectiles. The M110A2 contains a burster tube assembly with an aluminum plug sealing the base of the tube while the M110A1 contains a plastic plug, |
| Use: |
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| This projectile is fired from 155mm howitzers to provide screening smoke. The projectile also has a slight incendiary effect. |
| Functioning: |
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| When the weapon is fired, the burning propellant charge generates rapidly expanding gases to propel the projectile through the barrel to the velocity required to reach the target. The rotating band engages the barrel rifling to impart spin to the projectile for stability in flight. The fuze normally installed functions on impact and detonates the burster. The burster ruptures the projectile case and disperses the WP filler. White phosphorous ignites spontaneously upon contact with air and produces a dense white smoke. |
| 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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