M864
| M864 DPICM | |
|---|---|
 Russian language diagram | |
| Type | Base bleed, extended-range, base-ejection cargo artillery projectile |
| Place of origin | United States |
| Service history | |
| In service | Since 1987 |
| Production history | |
| Designed | 1980s |
| Manufacturer | General Dynamics Ordnance and Tactical Systems |
| Variants | M864A1 |
| Specifications | |
| Mass | 102 lb (46.3 kg) unfuzed |
| Length | 36 in (920 mm) fused |
| Diameter | 155 mm (6.1 in) |
| Muzzle velocity | 2,700 ft/s (830 m/s) |
| Maximum firing range | 18.3 mi (29.4 km)[note 1] |
| Filling |
|
| Filling weight |
|
| References | Janes[1] |
The M864 is an American made 155 mm artillery shell. It carries a DPICM warhead and incorporates base bleed technology to increase its range. The projectile is capable of delivering 24 M46 and 48 M42 dual-purpose anti-materiel/anti-personnel sub-munitions at ranges out to 29 kilometers. Base bleed technology was developed to reduce the amount of base drag on a projectile, thereby increasing the achieved range. The drag is reduced by a gas generator located on the base of the projectile. Once ignited, the gas generator bleeds hot gas into the projectile's wake, which causes the flow of air at the base to be less turbulent. The decrease in turbulence reduces base drag, which typically accounts for 50 percent of total drag. The amount of thrust produced by the base burner unit is negligible and does not serve the same function as the rocket motor on a rocket-assisted projectile (RAP).[2][3]
The M864 projectile is not ballistically matched to any projectile currently in the inventory, but because of the similarity of the trajectories, firing data for the M864 can be determined from M549A1 firing data.[2]
See also
- Dual-purpose improved conventional munition
- Lists of artillery
- List of crew-served weapons of the U.S. Armed Forces
Footnotes
- ^ The range of 18.3 mi (29.4 km) is achieved when fired from the 39‐caliber barrels of the M109A6 Paladin and FH70.[1]
References
- ^ a b Janes (17 July 2023), "155 mm M864 and M864A1 DPICM projectile", Janes Land Warfare Weapons: Ammunition, Coulsdon, Surrey: Jane's Group UK Limited., retrieved 30 July 2023
- ^ a b "M864 Base Burn DPICM". Federation of American Scientists. Retrieved 14 June 2012.
- ^ "TM-43-0001-28 (1994)" (PDF). BulletPicker. April 1994. p. 380. Retrieved 16 August 2026.
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