Name: Projectile, 155 mm: DP, Improved Conventional
Availability: InStock

Тип 

Стан

Тип

Дія

Керування

Калібр

Weights projectile, unfuzed

expulsion charge 90.7 g

Length, fuzed

Payload 24

Operating temperature limits

Storage temperature limits

Northern America

United States

Western Europe

Germany

Netherlands

<h2>Armament</h2><p>M1A1 Cannon for M114/M114A1 Towed Howitzer; M1A2 Cannon for M114A2 Towed Howitzer; M199 Cannon for M198 Towed Howitzer; M126/M126A1 Cannon for M109 Self-propelled Howitzer; M185 Cannon for M109A1 to M109A4 series of self-propelled howitzers; M284 Cannon for M109A5 and M109A6 Paladin self-propelled howitzers; XM777 Lightweight Towed Howitzer. The Projectile, 155 mm: DP, Improved Conventional Munition, M864 can also be fired from the following artillery weapons: NORICUM GH N-45 Gun-Howitzer; CITEFA CALA 30/2; Patria Vammas M-83 and 155 GH 52 howitzers; Giat Industries TR and 155/52 guns and M114F Howitzer; Field Howitzer FH-70 ; Soltam Model 839P and 845P towed howitzers, M-71 Gun-Howitzer , M-68 Gun-Howitzer, M-46 Field Gun, and M114S Howitzer; Hadid 155 mm Howitzer HM41 ( Iran ); Otobreda 155/39 TM Howitzer; KH179 Howitzer ( South Korea ); RDM M139 and M139/39 howitzers; STK FH-88 and FH-2000 Gun-Howitzers; LIW G5; SITECSA 155/45 ST 012 Gun-Howitzer; SANTA BARBARA SB 155/39 and 155/52 APU SBT-1 Howitzers, M114 155/45 and M114 155/39 conversions; Bofors FH-77B Howitzer; Bison Fortress Gun (Switzerland); T65 Howitzer and Extended Range Gun ( Taiwan ); 155 mm/52-calibre Howitzer ( Turkey ); M46/84 Gun and M65 Howitzer (Federal Republic of Yugoslavia ). The Projectile, 155 mm: DP, Improved Conventional Munition, M864 can also be fired from the following self-propelled artillery weapons: TAMSE VCA ( Argentina ); PZL45 ( PRC ); Giat Industries GCT and CAESAR 155/52; PzH 2000 (Germany); M44T (Germany); Soltam Rascal, Slammer and L33; Hadid 155 mm Self-propelled Cannon HM44 Thunder 2 ( Iran ); Otobreda Palmaria and M109L ; Type 75 ( Japan ); K9 Thunder( South Korea ); ZTS ZUZANA ( Slovakia ); LIW G6; SFAW M109 Upgrade (Switzerland); XT-69 ( Taiwan ); SP2000 ( Turkey ); AS90 and Braveheart (UK); UD 155 mm/52-calibre International Howitzer (USA).</p><h2>Development</h2><p>The 155 mm DPICM M864 may be regarded as a logical development of the 155 mm DPICM M483A1 (see separate entry), as it features a base burn (base bleed) unit that enhances range without introducing the inherent inaccuracy limitations of rocket assistance motors. The projectile is stored, transported and handled in exactly the same manner as the 155 mm DPICM M483A1 and it is claimed that no special instructions or training are required in its use. Production commenced during FY87. Approximately 30,000 of these projectiles were sent to the Persian Gulf for Operations Desert Shield and Storm but they were not used operationally due to the omission of the appropriate software in the US Army's Battery Computer System (BCS). It should be noted that the DPICM M864 continues to utilise the same grenades as the earlier M483A1 so the lack of a self-destruct mechanism for dud dual-purpose grenades imposes training and other operational limitations. The 155 mm DPICM M864 is a joint development and marketing operation between the Chamberlain Manufacturing Corporation and Talley Defense Systems. Chamberlain produces the metal components used for the 155 mm DPICM M864, together with the associated grenades, at the Scranton Army Ammunition Plant, Pennsylvania. Production is also carried out by General Dynamics, Ordnance and Tactical Systems (GD-OTS). Talley Defense Systems is responsible for the Base Bleed/Base Burn (BB) unit produced since 1991, under US Army agreement at the Army Ammunition Plant at Joliet, Illinois, following low-rate initial production in Mesa, Arizona. The Joliet facility is capable of producing 15,000 units a month, although all production in the USA is currently in abeyance. Talley Defense Systems have delivered nearly one million BB assemblies.</p><h2>Description</h2><p>The 155 mm DPICM M864 is a separate loading munition with a streamlined forged steel ogive, a low-drag steel body (1340 or 4190 alloy) profile and a steel base closure (4340). The body rear is encircled by a gilding metal drive band. The nose is occupied during storage, transit and handling by a threaded energy absorbing lifting plug screwed into the fuze well. Before firing the plug is replaced by an M577 MTSQ fuze. The base of the fuze intrusion is surrounded inside the ogive by a booster charge, below which is a pressure plate. The projectile base is occupied by a two-piece Base Bleed Base Burn (BB) unit filled with a barrel-shaped Hydroxyl Terminated PolyButadiene (HTPB) composite propellant grain, developed by Talley Defense Systems, to be ignited by propellant gases on firing. The inhibited HTPB burns slowly for approximately 22 seconds in such a manner that the resultant gases fill the vacuum created by the aerodynamic air flow behind the shell. This reduces drag behind the projectile, therefore enhancing range. In operation, the M577A1 time fuze functions at the selected instant during the projectile's trajectory and initiates the booster charge located at the base of the fuze well. This initiates the expulsion charge formed by 90.7 g of M10 propellant. The resultant increase in internal pressure against the pressure plate and the contents forces the base closure outwards to push off the base burn unit. The shell contents are then ejected. Centrifugal forces disperse the entire grenade load radially from the projectile line of flight. The dual-purpose grenades are of two types, the M42 and M46 . The 155 mm DPICM M864 carries 72 of them; 48 M42 and 24 M46 . Both types of grenade are identical, although the wall of the M46 is heavier and thicker than that of the M42 . Serrations are embossed into the inner wall of the M42 grenades to enhance fragmentation; M46 grenades are not embossed. The grenades are unarmed while inside the projectile and are armed mechanically by spin after ejection. While in flight they are stabilised and orientated for impact by the deployment of a nylon ribbon streamer which also creates the spin to arm the grenade. The grenades detonate on impact under the control of an integral M337A1 graze fuze which mechanically initiates an M55 detonator. Each grenade contains 30.5 g of Composition A5 formed into a shaped charge with a 60º angle which is directed downwards to produce an anti-armour jet capable of penetrating approximately 70 mm of homogeneous armour plate. Fragmentation of the grenades' steel bodies produces anti-personnel effects. Both types of grenade are 82.55 mm long. The M42 weighs 208 g and the M46 213 g. The M42 and M46 grenades do not feature self-destruct mechanisms. The 155 mm DPICM M864 can also be fired in a fire registration mode. In this mode the expulsion charge is replaced by a shaped charge. When the fuze functions the resultant high-order detonation causes all 88 grenades to detonate, causing the projectile to fragment in the same manner as a conventional HE projectile and provide an airburst marker for fire registration. The 155 mm DPICM M864 can be used with the full range of propellant charges, including the M203 , apart from the basic M3A1 (green bag) and M119 charges. The M3A1 charge cannot take full advantage of the full potential range of the 155 mm DPICM M864 while the M119 is unable to ignite the base burn unit with sufficient reliability. The Propelling Charge M4A2 is a white bag charge using 5.897 kg of M1 propellant divided into a base charge and four increments for firing as Charges 3 to 7. The increments are tied together by four cloth straps. A 96.4 g clean-burning igniter charge in a red cloth bag is sewn to the rear of the base section and an M2 flash reducer pad is assembled in front of the base charge. The complete charge is 533 mm long. The Propelling Charge M4A1 is similar to the M4A2 but does not contain the M2 flash reducer pad (although this can be added if required), the base igniter contains black powder. The Propelling Charge M119A1 is a white bag charge with an igniter pad at the base and a ring-shaped flash reducer pad located on the front of the bag; the forward end also contains lead foil as a decoppering agent. The M119A1 contains approximately 8.62 kg of cool-burning M6 propellant with a central igniter consisting of a moulded nitrocellulose tube containing benite strands. The Propelling Charge M119A2 uses a red charge bag and does not have a laced jacket. It is provided with an igniter protector cap and tie strap which must be removed before firing; the circular red cloth igniter pad weighs 113 g. The M119A2 zone 7 is equivalent to the M119/M119A1 zone 8 charge. There are four 113 g potassium sulphate flash reducer increments located in side pockets. The M119A2 is 660 mm long. The similar charge to the M119A2 is produced by Eurometaal NV as the No 13. The Propelling Charges M203 and M203A1 (Charge 8S) were developed primarily for use in the 155 mm M284 cannon used with the M109A5 and M109A6 Paladin self-propelled howitzers, although they can be used with other similar long-barrelled pieces such as the CN79 Cannon used on the South Korean 155 mm KH179 Towed Howitzer. The M203/M203A1 is a single red bag charge encased in a tight fitting lacing jacket for strength. The bag has an igniter sewn to the base, a central core igniter extending through the centre of the charge and a flash reducer in front of the charge. The M203A1 differs from the M203 by producing cooler burning to increase barrel life, together with a reduction in blast and muzzle flash. When firing the 155 mm DPICM M864 from the M109A5 and M109A6 Paladin self-propelled howitzers and the M198 towed howitzer, a version of the Charge, Propelling, 155 mm: M203A1 with a rigid combustible case may be used. This version of the M203A1 weighs 14.06 kg, is 768 mm long overall and contains 12.7 kg of cool-burning M31A1E1 stick propellant. The combustible case and end cap contains a talc wear-reducing additive while the contents include a further wear-reducing additive and 156 g of lead foil to act as a decoppering agent. The use of this charge results in reduced flash and muzzle blast. The M119 series and M203 propellant charges should be fired using the Primer M82 only. Using the full M4A2 charge (white bag, Charge 7), the 155 mm DPICM M864 fired from the 155 mm M1A2 Cannon used on the M114A2 Towed Howitzer has a maximum range of 17,200 m. Using the M119A2 charge, the 155 mm DPICM M864 fired from the 155 mm M185 Cannon used on the M109A1 to M109A4 series of self-propelled howitzers, has a maximum range of 22,100 m. Using the M203A1 charge, the 155 mm DPICM M864 fired from the 155 mm M284 Cannon used on the M109A5 and M109A6 Paladin self-propelled howitzers, has a maximum range of 29,400 m. A similar range is attained when the 155 mm DPICM M864 is fired from the 155 mm FH-70 Howitzer using the full L10 propelling charge. Giat Industries of France produces a combustible case intended for use with all NATO standard 155 mm weapons. The case consists of a skirt, base and cover containing Charges 6 to 9; lower charges are formed using bagged charges. Use of this case system produces a barrel life at maximum charge of 3000 EFC. The muzzle velocities produced using this combustible case system are as follows: Charge 6 - 586 m/s Charge 7 - 705 m/s Charge 8 - 810 m/s Charge 9 - 830 m/s. Charge 9 can fire a projectile fitted with a base bleed unit to a range of 30,400 m. Chartered Ammunition Industries of Singapore produce a unitary charge, using cloth bags, which covers Charges 6, 7, 8 and 9. Known as the C20, this charge uses M6 propellant, is 610 mm long, 160 mm in diameter and weighs 10 kg. It is anticipated that future 155 mm propellant charge systems will involve the employment of the M231/XM232 Modular Artillery Charge System (MACS). Other countries are in the process of adopting similar modular charges.</p><h2>Authorised fuzes</h2><p>MTSQ M577 or M577A1; ET M762 Equivalent projectiles GERMANY</p><p>GERMANY</p><h2>Manufacturer</h2><p>Rheinmetall DeTech GmbH</p><p>Type: 155 mm DM 652</p><p>Description: Ballistically matched to the 155 mm DPICM M864, the 155 mm DM 652 cargo projectile</p><p>carries 49 DM 1383 bomblet/grenades, each with a self-destruct element. The DM 1383 bomblet</p><p>trumpet-shaped charge has a diameter of 42 mm and is stated to produce a superior armour penetration</p><p>compared to the M42/M46</p><p>NETHERLANDS</p><h2>Manufacturer</h2><p>Eurometaal NV</p><p>Type: 155 mm DPICM M864</p><p>Description: Standard US specifications. Available for production</p><p>UNITED STATES OF AMERICA</p><h2>Manufacturer</h2><p>General Dynamics, Ordnance and Tactical Systems (GD-OTS)</p><p>Type: 155 mm DPICM M864</p><p>Description: Standard specifications</p>

The Projectile, 155 mm: DP, Improved Conventional is the 155 mm DPICM M864 is a separate loading munition with a streamlined forged steel ogive, a low-drag steel body (1340 or 4190 alloy) profile and a steel base closure (4340). The body rear is encircled by a gilding metal drive band. The nose is occupied during storage, transit and handling by a threaded energy absorbing lifting plug screwed into the fuze well. Before firing the plug is replaced by an M577 MTSQ fuze. The base of the fuze intrusion is surrounded inside the ogive by a booster charge, below which is a pressure plate. The projectile base is occupied by a two-piece Base Bleed Base Burn (BB) unit filled with a barrel-shaped Hydroxyl Terminated PolyButadiene (HTPB) composite propellant grain, developed by Talley Defense Systems, to be ignited by propellant gases on firing. The inhibited HTPB burns slowly for approximately 22 seconds in such a manner that the resultant gases fill the vacuum created by the aerodynamic air flow behind the shell. This reduces drag behind the projectile, therefore enhancing range. In operation, the M577A1 time fuze functions at the selected instant during the projectile's trajectory and initiates the booster charge located at the base of the fuze well. This initiates the expulsion charge formed by 90.7 g of M10 propellant.

A 96.4 g clean-burning igniter charge in a red cloth bag is sewn to the rear of the base section and an M2 flash reducer pad is assembled in front of the base charge. The complete charge is 533 mm long. The Propelling Charge M4A1 is similar to the M4A2 but does not contain the M2 flash reducer pad (although this can be added if required), the base igniter contains black powder. The Propelling Charge M119A1 is a white bag charge with an igniter pad at the base and a ring-shaped flash reducer pad located on the front of the bag; the forward end also contains lead foil as a decoppering agent. The M119A1 contains approximately 8.62 kg of cool-burning M6 propellant with a central igniter consisting of a moulded nitrocellulose tube containing benite strands. The Propelling Charge M119A2 uses a red charge bag and does not have a laced jacket. It is provided with an igniter protector cap and tie strap which must be removed before firing; the circular red cloth igniter pad weighs 113 g.

Projectile, 155 mm: DP, Improved Conventional

Projectile, 155 mm: DP, Improved Conventional

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