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M712 Copperhead
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White Sands Missile Range M712 Copperhead

Type Cannon-launched guided projectile
PlaceoforiginUnited States
Service history
UsedbyU.S., Egypt, Jordan, Lebanon, Taiwan, Ukraine
Specifications
Mass62.4kg (137.6lb)
Length140cm (54in)
Diameter155mm (6.1in)
Caliber 155mm (6.1in)
Effectivefiringrange16km (9.9mi)
Warhead Composition B
Warheadweight6.69 kilograms (14.75lb)

Guidance
system

laser guidance
M712 Copperhead - WikiMili, The Best Wikipedia Reader (2)
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The M712 Copperhead is a 155 mm caliber cannon-launched guided projectile. It is a fin-stabilized, terminally laser guided, explosive shell intended to engage hard point targets such as tanks, self-propelled howitzers or other high-value targets. It may be fired from different artillery pieces, such as the M114, M109, M198, M777 and CAESAR howitzers. The projectile has a minimum range of 3km (1.9mi) and a maximum range of 16km (9.9mi). [1]

Contents

  • Development
  • Description
  • Modes of operation
  • Combat history
  • Operators
  • Current operators
  • Former operators
  • See also
  • References
  • Sources

Development

The concept for Copperhead was originally made in 1970 by engineers at the US Army's Rodman Laboratories, with feasibility studies conducted in 1971. In 1972 development contracts were awarded to Martin Marietta and Texas Instruments. After testing Martin Marietta was chosen for continued development through the 1970s. [2]

Inventories of March 1, 1995: [3]

  • US Army: Usable: 16,095 - Unusable 0 - Total: 16,095
  • USMC: Usable: 1,873 - Unusable: 894 - Total: 2,767

Description

At 62.4 kilograms (137.6lb) and 140 centimetres (54in) long, Copperhead is longer and heavier than traditional 155mm ammunition. [4]

The warhead assembly consists of a shaped charge loaded with 6.69 kilograms (14.75lb) of Composition B.

For Copperhead to function, the target must be illuminated with a laser designator. Once the laser signal is detected, the on-board guidance system will operate the steering vanes to maneuver the projectile to the target. The Copperhead targeting logic is designed to ensure (1) that the optical system will always be able to detect the target, and (2) that once the target has been detected there will be sufficient time and velocity to maneuver to hit the target. Copperhead must be below any cloud cover at critical parts of the trajectory, and there must be sufficient visibility to ensure that when the target is acquired the projectile will have sufficient time to maneuver.

Modes of operation

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Copperhead has two modes of operation: ballistic mode and glide mode. Ballistic mode is used where the cloud ceiling is high and visibility is good. When the projectile is 3,000m (9,800ft) from the target, the guidance vanes extend, the target is acquired, and then the on-board guidance system adjusts the guidance vanes to maneuver onto the target.

Glide mode is used when the cloud ceiling and/or the visibility is too low to permit the use of the ballistic mode. A glide mode trajectory consists of two phases: a ballistic phase and a glide phase. At a predetermined point along the trajectory, the guidance vanes extend and there is a transition from ballistic phase to glide phase. Glide phase targeting logic is designed to ensure the largest possible angle of fall permitted by the cloud cover and the visibility. The target is acquired when the projectile is close enough to detect the laser illumination or when the projectile emerges from the cloud cover, whichever event occurs later in the trajectory. When a trajectory solution has been obtained, time-to-target and terminal velocity are checked to ensure that there will be enough time to maneuver and that the projectile is aerodynamically stable—that it will not stall while maneuvering.

Initially the laser designation was intended to be performed by the MQM-105 Aquila pilotless drone. [5]

Combat history

Copperhead was used in Operation Desert Storm, [6] with 90 rounds fired against hardened Iraqi fortifications and radar stations. One of these strikes caused an Iraqi unit to surrender. [1]

Lebanese Armed Forces fired several hundred Copperhead shells at ISIL targets in east Lebanon during the Qalamoun offensive (July–August 2017). At least five technicals, five occupied buildings, and several troop formations were struck with precision. The US replenished 827 shells after the successful completion of the offensive. [7] [ vague ]

Operators

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Current operators

  • United States
  • Egypt
  • Jordan
  • Lebanon
  • Taiwan

Former operators

  • Australia – now replaced by SMArt 155. [8]

See also

  • M982 Excalibur (United States, Sweden)
  • M1156 Precision Guidance Kit (United States)
  • Krasnopol (Russia, Soviet Union)
  • XM395 Precision Guided Mortar Munition (United States)
  • Bofors/Nexter Bonus (Sweden, France)
  • Bofors STRIX (Sweden)

Related Research Articles

M712 Copperhead - WikiMili, The Best Wikipedia Reader (12)

A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (13)

Paveway is a series of laser-guided bombs (LGBs).

M712 Copperhead - WikiMili, The Best Wikipedia Reader (14)

A mortar is today usually a simple, lightweight, man-portable, muzzle-loaded cannon, consisting of a smooth-bore metal tube fixed to a base plate with a lightweight bipod mount and a sight. Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition. Historically mortars were heavy siege artillery. Mortars launch explosive shells in high-arching ballistic trajectories.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (15)

A shell, in a military context, is a projectile whose payload contains an explosive, incendiary, or other chemical filling. Originally it was called a bombshell, but "shell" has come to be unambiguous in a military context. A shell can hold a tracer.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (16)

Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg).

M712 Copperhead - WikiMili, The Best Wikipedia Reader (17)

A laser designator is a laser light source which is used to designate a target. Laser designators provide targeting for laser-guided bombs, missiles, or precision artillery munitions, such as the Paveway series of bombs, AGM-114 Hellfire, or the M712 Copperhead round, respectively.

Pansarsprängvinggranat m/94STRIX is a Swedish endphase-guided projectile fired from a 120mm mortar currently manufactured by Saab Bofors Dynamics.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (18)

A guided bomb is a precision-guided munition designed to achieve a smaller circular error probable (CEP).

M712 Copperhead - WikiMili, The Best Wikipedia Reader (19)

The M982 Excalibur is a 155 mm extended-range guided artillery shell developed in a collaborative effort between the U.S. Army Research Laboratory (ARL) and the United States Army Armament Research, Development and Engineering Center (ARDEC). The Excalibur was developed and/or manufactured by prime contractor Raytheon Missiles & Defense, BAE Systems AB and other subs and primes in multiple capacities such as Camber Corporation and Huntington Ingalls Industries. It is a GPS and inertial-guided munition capable of being used in close support situations within 75–150 meters (250–490ft) of friendly troops or in situations where targets might be prohibitively close to civilians to attack with conventional unguided artillery fire. In 2015, the United States planned to procure 7,474 rounds with a FY 2015 total program cost of US$1.9341 billion at an average cost of US$258,777 per unit. By 2016, unit costs were reduced to US$68,000 per round. Versions that add laser-guidance capability and are designed to be fired from naval guns began testing in 2015. By October 2018, over 1,400 rounds had been fired in combat.

The XM1111 Mid-Range Munition (MRM) is a 120mm precision guided munition developed for the Rheinmetall Rh-120 120mm gun used by several Western tanks. It was also intended to fulfill a requirement for Future Combat Systems (canceled) for a long-range, beyond line of sight (BLOS) tank munition.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (20)

The XM395 Precision Guided Mortar Munition (PGMM) is a 120mm guided mortar round developed by Alliant Techsystems.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (21)

The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127mm) shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 million dollars in funding. The developmental round was designated EX 171.

The Ballistic Trajectory Extended Range Munition (BTERM) was a failed program to develop a precision guided rocket-assisted 127mm (5-inch) artillery shell for the U.S. Navy. The program was originally named the Autonomous Naval Support Round (ANSR) and was developed by Alliant Techsystems.

The Long Range Land Attack Projectile (LRLAP) is a canceled precision guided 155mm (6.1in) naval artillery shell for the U.S. Navy's Advanced Gun System (AGS). LRLAP was developed and produced by Lockheed Martin Missiles and Fire Control, the prime contractor being BAE Systems.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (22)

The 2K25 Krasnopol is a Soviet 152/155mm cannon-launched, fin-stabilized, base bleed-assisted, semi-automatic laser-guided artillery weapon system. It automatically 'homes' on a point illuminated by a laser designator, typically operated by a drone or ground-based artillery observer. Krasnopol projectiles are fired mainly from Soviet self-propelled howitzers such as the 2S3 Akatsiya and 2S19 Msta-S and are intended to engage small ground targets such as tanks, other direct fire weapons, strong-points, or other significant point targets visible to the observer. It can be used against both stationary and moving targets.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (23)

A precision-guided munition (PGM), also called a smart weapon, smart munition, or smart bomb, is a guided munition intended to hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the Persian Gulf War guided munitions accounted for only 9% of weapons fired, but accounted for 75% of all successful hits. Despite guided weapons generally being used on more difficult targets, they were still 35 times more likely to destroy their targets per weapon dropped.

Cannon-launched guided projectiles (CLGP) are precision-guided munitions launched by howitzers, mortars, tank guns, and naval guns. Those projectile main propulsion system is the initial kinetic shoot, directed as much as possible toward the target. A secondary GPS or geocoordinates-based system then corrects the trajectory to increase target accuracy and fall closer to the target. This system relies on electronic guidance and pre-programmed coordinates, submitted to the round before its launch.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (24)

Sudarshan is an Indian laser-guided bomb kit, developed by Aeronautical Development Establishment (ADE), a DRDO lab with technological support from another DRDO lab Instruments Research and Development Establishment (IRDE), for the Indian Air Force (IAF).

The DF-ZF is a hypersonic glide vehicle (HGV) developed by the People's Republic of China. It is launched by the DF-17 medium-range ballistic missile. The combined weapon system was likely operational by October 2019.

M712 Copperhead - WikiMili, The Best Wikipedia Reader (25)

The BONUS or ACED is a 155 mm artillery cluster round co-developed and manufactured by Bofors of Sweden and Nexter of France. It was designed to fulfill a long range, indirect fire, top attack requirement against armoured fighting vehicles.

References

  1. 1 2 Ripley, Tim (1992). The new illustrated guide to the modern US Army. Salamander Books Ltd. pp.114–115. ISBN 0-86101-671-8.
  2. Pretty, Ronald (1978). Jane's pocket book of missiles. London: Macdonald and Jane's. pp.65–66. ISBN 978-0-354-01069-6.
  3. "Industrial Base: Inventory and Requirements for Artillery Projectiles".
  4. http://www.ausairpower.net/SP/DT-SPH-0705.pdf [ bare URL PDF ]
  5. p.43, Yenne & Yenne
  6. "M712 Copperhead". www.globalsecurity.org.
  7. "Lebanese Troops Hammered ISIS with Laser Guided Artillery Shells in 2017". Archived from the original on 17 February 2020. Retrieved 7 February 2018.
  8. "DEFENCE PURCHASES NEW ANTI-TANK ARTILLERY ROUND". Australian Department of Defence. Archived from the original on 11 October 2007. Retrieved 9 December 2010.

Sources

  • Yenne, William, Yenne, Bill, Attack of the Drones: A History of Unmanned Aerial Combat, Zenith Imprint, 2004 ISBN 0-7603-1825-5

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