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Alliant Techsystems Inc. (ATK) was an American
aerospace Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial and military applications. Aerospace engineering consists of aeronautics and ast ...
, defense, and sporting goods company with its headquarters in
Arlington County, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...
, in the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
. The company operated in 22 states,
Puerto Rico Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and unincorporated ...
, and other countries. ATK's revenue in the 2014 fiscal year was about US$4.78 billion. On April 29, 2014, ATK announced that it would spin off its Sporting Group and merge its Aerospace and Defense Groups with
Orbital Sciences Corporation Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...
. The spinoff of the Sporting Group to create Vista Outdoor and the merger leading to the creation of Orbital ATK were completed on February 9, 2015; both companies began operations as separate entities on February 20, 2015.


History

ATK was launched as an independent company in 1990, when
Honeywell Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance ma ...
spun off its defense businesses to shareholders. The former Honeywell businesses had supplied defense products and systems to the U.S. and its allies for 50 years, including the first electronic autopilot for B-17 aircraft's bombing missions during World War II.


Mergers and acquisitions

In 1995, ATK entered the aerospace market with the acquisition of the Hercules Aerospace Co., a division of
Hercules Inc. Hercules, Inc. was a chemical and munitions manufacturing company based in Wilmington, Delaware, United States, incorporated in 1912 as the Hercules Powder Company following the breakup of the DuPont explosives monopoly by the U.S. Circuit Co ...
Since then ATK has become a supplier of
aerospace Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial and military applications. Aerospace engineering consists of aeronautics and ast ...
and defense products to the U.S. government and its allies, and to their contractors. It also carries on the manufacture and sale of the Hercules gunpowder lines. In 2001, ATK acquired
Thiokol Thiokol (variously Thiokol Chemical Corporation(/Company), Morton Thiokol Inc., Cordant Technologies Inc., Thiokol Propulsion, AIC Group, ATK Thiokol, ATK Launch Systems Group; finally Orbital ATK before becoming part of Northrop Grumman) was ...
, renaming it ATK Launch Systems in 2006, though it is still known within the industry by its original name. Thiokol was the sole manufacturer of the reusable Solid Rocket Motor used to launch the
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
Space Shuttle The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program n ...
, which is being adapted for NASA's
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any ...
. Also in 2001, ATK entered the sporting and law enforcement ammunition market with the acquisition of the ammunition businesses of Blount International. This acquisition made ATK the nation's largest manufacturer of ammunition. In 2009, ATK acquired Eagle Industries and in 2010 ATK acquired Blackhawk Industries Products Group Unlimited, LLC, diversifying into the security and law enforcement market. On 29 April 2014, ATK announced that its board unanimously approved a plan to create two independent, public companies composed of ATK's current businesses and Orbital Sciences Corporation. ATK is spinning off its Sporting Group to ATK shareholders on a tax-free basis. The spinoff will be immediately followed by an all-stock merger of ATK's Aerospace and Defense Groups with Orbital Sciences; Orbital shareholders will receive ATK common stock as consideration. The combined company will be named Orbital ATK Inc."Orbital ATK Space Venture Created in $5 Billion Merger"
NBC News
On October 28, 2014, ATK announced that it would be seeking approval of issuance of shares to Orbital stockholders on December 9. ATK responded to news of the explosion of a rocket built by Orbital in an earnings call. ATK stated it would conduct a "thorough evaluation of any potential implications resulting from the incident, including current operating plans, long-term strategies, and the proposed transaction." ATK also said that it was taking a careful look at its Castor 30XL motor, which is used in the second stage of Orbital's Antares rocket. ATK further noted that the explosion occurred before ignition of the second stage. On November 17, 2014 ATK stated that its due-diligence assessment of its merger with Orbital Sciences undertaken in response to the failure of Orbital's Antares rocket found that the transaction remained in the best interest of its shareholders. Both firms rescheduled shareholder votes on the merger from December 9, 2014 to January 27, 2015.


Groups


ATK Aerospace

ATK's Aerospace Group covered space, defense and commercial aerospace products and capabilities. The group offered propulsion for space exploration, commercial launch vehicles and strategic and missile defense. ATK Aerospace was headquartered in
Magna, Utah Magna ( ) is a metro township in Salt Lake County, Utah, United States. The current population of the township stands at 29,251 according to the 2020 census, a 10.4% increase over 26,505 in 2010. History Settlement Settlement of the area beg ...
. It also specialized in: * Composite structures for military and commercial aircraft *Rolls-Royce Trent XWB-97 engine *
Lockheed Martin F-35 Lightning II The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft that is intended to perform both air superiority and strike missions. It is also able to provide el ...
(also known as the Joint Strike Fighter) *Integrated satellite systems *Satellite components and subsystems *Military flares and decoys *Space engineering services *Propulsion for space exploration, commercial launch vehicles, strategic and missile defines **
ALV X-1 ALV X-1 was the first and only flight of the ATK Launch Vehicle (ALV) sounding rocket developed by Alliant Techsystems. The launch occurred from LP-0B at the Mid-Atlantic Regional Spaceport (MARS) at NASA's Wallops Flight Facility. This missi ...
sounding rocket In November 2010, ATK was selected by NASA for potential contracts in heavy lift launch vehicle systems and other propulsion technologies. In 2012, NASA awarded the company a $50 million contract to complete engineering development and risk reduction tests as part of the Advanced Concept Booster Development for the Space Launch System (SLS). In April 2014, ATK received a contract from the
United Launch Alliance United Launch Alliance (ULA), legally United Launch Alliance, LLC, is an American spacecraft launch service provider that manufactures and operates a number of rocket vehicles that are capable of launching spacecraft into orbits around Earth, a ...
, worth $178 million, to produce composite structures for the United States Air Force's
Evolved Expendable Launch Vehicle National Security Space Launch (NSSL) — formerly Evolved Expendable Launch Vehicle (EELV) from 1994 to 2019 — is a program of the United States Space Force (USSF) intended to assure access to space for United States Department of Defense and o ...
program. ATK will deliver parts for the
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Mart ...
and
Delta IV Delta IV is a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s. Originally designed by Boeing's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, th ...
starting in 2014 and continuing into early 2018. There is an option for additional deliveries in 2017 and 2018. ATK will provide fairings, payload adapters and diaphragms, interstages, nose cones, and thermal/aerodynamic protection components. All the structures will be produced at ATK's Large Structures Center of Excellence in
Iuka, Mississippi Iuka is a city in and the county seat of Tishomingo County, Mississippi, United States. Its population was 3,028 at the 2010 census. Woodall Mountain, the highest point in Mississippi, is located just south of Iuka. History Iuka is built o ...
. ATK produces avionics for NASA's
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any ...
program. The Space Launch System is designed for deep space operations, including missions to Mars. After ATK finishes testing, avionics will be delivered to NASA's
Marshall Space Flight Center The George C. Marshall Space Flight Center (MSFC), located in Redstone Arsenal, Alabama (Huntsville postal address), is the U.S. government's civilian rocketry and spacecraft propulsion research center. As the largest NASA center, MSFC's firs ...
. The first launch is expected in 2017.


Airbus A350 XWB-1000

ATK produces composite stringers and frames for the Airbus A350 XWB-1000 variant at its facility in Clearfield, Utah. As of 2014, ATK has delivered more than 10,000 components to
Airbus Airbus SE (; ; ; ) is a European multinational aerospace corporation. Airbus designs, manufactures and sells civil and military aerospace products worldwide and manufactures aircraft throughout the world. The company has three divisions: '' ...
.


Boeing 787 Dreamliner

ATK participated in a consortium to develop a new engine nozzle for the Boeing 787 designed to make its operation more environmentally friendly. The nozzle was made from oxide-oxide ceramic matrix composite (CMC) and tested on the 787
ecoDemonstrator The ecoDemonstrator Program is a Boeing flight test research program, which has used a series of specially modified aircraft to develop and test aviation technologies designed to improve fuel economy and reduce the noise and ecological footprint ...
. Boeing's tests show that the nozzle is more heat resistant than previous models and lighter, allowing for potential gains in fuel efficiency. This was the largest part ever made from CMC.


Orion Multi-Purpose Crew Vehicle

The Orion Multi-Purpose Crew Vehicle is a
spacecraft A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, ...
intended to carry a crew of up to four astronauts to destinations beyond-
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never m ...
. Currently under development by NASA, for launch on the
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any ...
, Orion will facilitate human exploration of the
Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
, asteroids and
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
. ATK developed the launch abort motor that sits on top of the Orion capsule. This device would pull the capsule and its crew up and away from the rocket in the event of major fault on the launch pad or during ascent. ATK also developed numerous composite parts that provide heat protection for Orion.


James Webb Space Telescope

ATK worked with
Northrop Grumman Northrop Grumman Corporation is an American multinational aerospace and defense technology company. With 90,000 employees and an annual revenue in excess of $30 billion, it is one of the world's largest weapons manufacturers and military tech ...
to produce the backplane support frame (BSF) for the James Webb Space Telescope. The BSF, center section, and wings form what is called the primary mirror backplane support system (PMBSS). The BSF is the primary load-bearing structure during launch and the PMBSS holds the telescope's main instruments, including its mirrors. The BSF was designed and manufactured at ATK's facilities in Magna, Utah. ATK designed and fabricated more than 10,000 parts for the PMBSS. PMBSS is made primarily of lightweight graphite, but numerous other materials including invar,
titanium Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion i ...
, and other composite materials were used.


Delta II

ATK produces Graphite Epoxy Motors (GEM) and largest composite fairings for the Delta II rocket as a subcontractor for the United Launch Alliance. As of June 2014, ATK has produced 987 solid rocket boosters for Delta II missions. These strap-on boosters, known as GEM-40s, add 434,000 pounds to the Delta II's maximum thrust. The GEM-40s can be used in groups of three, four, and nine depending on the weight of the payload. The composite structures supplied by ATK increase performance by reducing weight. In addition to composite booster cases for the GEM-40s, ATK produces a 10-foot wide composite payload fairing that covers and protects satellites during launch. ATK also produces the titanium diaphragm propellant tanks and pressurant tank for each Delta II vehicle.


Delta IV

ATK produces Graphite Epoxy Motors and numerous other components for the Delta IV rocket. For example, for the Delta IV that carried the Wideband Global SATCOM satellite (WGS-6) into orbit for the U.S. Air Force, ATK supplied the interstage connector that linked the Common Booster Core and the cryogenic second stage, a centerbody that connects the liquid oxygen tank to liquid hydrogen tanks, a thermal shield for the RS-68 engine, the composite payload fairing, and numerous pieces of hardware for securing the payload.


Orbiting Carbon Observatory 2

The Orbiting Carbon Observatory 2 (OCO-2) is an American
environmental science Environmental science is an interdisciplinary academic field that integrates physics, biology, and geography (including ecology, chemistry, plant science, zoology, mineralogy, oceanography, limnology, soil science, geology and physical geog ...
satellite. The spacecraft is used to study
carbon dioxide Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is t ...
concentrations and distributions in the atmosphere. ATK produced the OCO-2's Variable Conductance Heat Pipes, an important part of its thermal control system, solar arrays, and solar array substrates.


InSight

InSight is a robotic lander mission to
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...
originally planned for launch in March 2016.NASA will send robot drill to Mars in 2016
Washington Post, By Brian Vastag, Monday, August 20
The mission's objective is to place a stationary
lander Lander may refer to: Media and entertainment * ''Lander'' (computer game), computer game published by Psygnosis in 1999 * ''Lander'' (game demo), the 3D game demo provided with the Acorn Archimedes computer * Lander (Transformers), a fiction ...
equipped with a seismometer and heat flow probe on the surface of Mars to study its early geological evolution. This would bring new understanding of the solar system's
terrestrial planets A terrestrial planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets accepted by the IAU are the inner planets closest to the Sun: Mercury, ...
. ATK was awarded a contract to provide its UltraFlex solar arrays for the mission. ATK claims that UltraFlex will provide better performance than typical solar arrays used on spacecraft while accommodating ambitious requirements for low mass and small size.


Atlas V

ATK entered the competition to replace the Russian-made rocket engine on the Atlas V rocket in September 2014. The Atlas V is used to launch most U.S. military satellites. ATK entered the competition in response to a request for proposals from the Air Force Space and Missile Defense Center issued in 2013 for the RD-180 rocket engine. ATK already supplies rocket engines used in heavier version of the Atlas V. ATK says that solid rocket motors are more reliable and deliver more thrust. ATK said, "Solid rocket motors are optimal for first-stage performance as they provide high lift-off thrust, allowing for more payload margin. They also require less ground and launch infrastructure, resulting in fewer launch scrubs." The RD-180 engines use kerosene for fuel. The request from the Air Force occurred due to concerns about whether the RD-180 would be available in the future due to increasing tensions with Russia.


Graphite Epoxy Motors

The Graphite-Epoxy Motor (GEM) is a
solid rocket A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses solid propellants ( fuel/ oxidizer). The earliest rockets were solid-fuel rockets powered by gunpowder; they were used in warfare by the Arabs, Chinese, ...
motor produced by ATK using epoxy composite casing. GEMs are used as boosters for the
Delta II Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 va ...
,
Delta III Delta III was an expendable launch vehicle made by Boeing. The vehicle was developed from the highly-successful Delta II to help meet the launch demand of larger satellites. The first Delta III launch was on August 26, 1998. Of its three flight ...
, and
Delta IV Delta IV is a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s. Originally designed by Boeing's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, th ...
launch vehicle A launch vehicle or carrier rocket is a rocket designed to carry a payload ( spacecraft or satellites) from the Earth's surface to outer space. Most launch vehicles operate from a launch pads, supported by a launch control center and sys ...
s. The use of composite materials allows for booster casings several times lighter than the steel casings of the Castor 4 solid rocket motors they replaced. The first flight of a GEM occurred in 1990 on a Delta II 7925.


ATK Defense

ATK's Defense Group produced ammunition, precision and strike weapons, missile-warning solutions and tactical rocket motors across air, sea and land-based systems. ATK Defense Group develops products and services for: *Small-, medium- and large-caliber ammunition *Anti-radiation homing strike vehicles ** AARGM *Missile warning and hostile fire detection *Precision-guided munitions ** PGK ** XM25 *Propulsion, advanced fuzing and warheads *Medium-caliber gun systems *Missile defense interceptors *Weaponized ISR special mission aircraft **MC-27J As of April 2014, ATK had a three-year contract with Lockheed to develop a warhead for the Guided Multiple Launch Rocket System. The contract includes engineering, manufacturing, and development. ATK's work will focus on system performance, warhead qualification, and producibility.


Lake City Army Ammunition Plant

In 2012, ATK was selected by the
United States Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, ...
to continue operating and maintaining the Lake City Army Ammunition Plant (LCAAP) for an additional seven to ten years. The LCAAP is a federally owned facility in Independence, Missouri. It was built by
Remington Arms Remington Arms Company, LLC was an American manufacturer of firearms and ammunition, now broken into two companies, each bearing the Remington name. The firearms manufacturer is ''Remington Arms''. The ammunition business is called ''Remington ...
in 1941 to manufacture and test small-caliber ammunition for the army. As of July 2007, the plant produced about 1.5 billion rounds of ammunition per year. The LCAAP still tests ammunition and is the largest producer of small-arms ammunition for the U.S. military. ATK has operated the LCAAP since April 2001.Lake City Army Ammunition Plant
. ''GlobalSecurity.org''.
Lardner, Richard.

. ''
USA Today ''USA Today'' (stylized in all uppercase) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth on September 15, 1982, the newspaper operates from Gannett's corporate headquarters in Tysons, Virgini ...
''. 23 July 2007.
The United States Army and ATK opened a renovated ammunition production facility at the LCAAP in December 2014. The renovations improved efficiency and quality control. The Army and ATK invested $11 million to modernize "Building 65" for the production of 20 millimeter ammunition. These large caliber rounds are usually fired from automatic cannons mounted on ground vehicles and aircraft. Building 65 housed 20 millimeter round production until 1997, when it was moved to Building 3. About 50 people are employed on this line.


AGM-88E Advanced Anti-Radiation Guided Missile

The AGM-88E Advanced Anti-Radiation Guided Missile (AARGM) is an upgrade to the AGM-88 High-speed Anti-Radiation Missile (HARM). The AARGM is the result of cooperation between the United States and Italy. It is produced by ATK. In September 2013, ATK delivered the 100th AARGM to the U.S. Navy. It will be initially integrated onto the FA-18C/D, FA-18E/F, EA-18G, and Tornado ECR aircraft and later on the F-35. The AGM-88E development program was proceeded on schedule and did not exceed its budget. In August 2014, the
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
awarded a full-rate production contract to ATK to produce to AARGM. Under this contract ATK will also provide captive air training missiles for both the United States and Italy. This is the third contract for the AARGM won by ATK and it is worth $96.2 million.


AN/AAR-47 Missile Approach Warning System

The AN/AAR-47 Missile Approach Warning System (MWS) is used on slow moving aircraft such as helicopters and military transport aircraft to notify the pilot of threats and to trigger the aircraft's countermeasures systems. Its main users are the U.S. Army, Navy and Air Force, but is also operated by other countries. Originally developed by Loral Space & Communications, it has been solely a product of ATK since 2002. The AN/AAR-47 passively detects missiles by their infrared signature, and uses algorithms to differentiate between incoming missiles and false alarms. Newer versions also have laser warning sensors and are capable of detecting a wider range of threats. After processing the nature of the threat, the system gives the pilot an audio and visual warning, and tells the direction of the incoming threat. It also sends a signal to the aircraft's infrared countermeasures system, which can then for example deploy flares. The development of the original AN/AAR-47(V)1 began in 1983 by Loral. ATK became a second production source in the mid 90s and eventually became the primary contractor. In 1998 ATK began production of the improved AN/AAR-47(V)2, which added laser warning functionality.


Precision Guidance Kit

The Precision Guidance Kit (PGK) is a United States Army program to develop a
precision guidance A precision-guided munition (PGM, smart weapon, smart munition, smart bomb) is a guided munition intended to precisely hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the First Gulf ...
system for existing 155 mm
artillery shell 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. Modern usage so ...
s. The prime contractor is Alliant Techsystems and the project team includes Interstate Electronics Corporation. In operation the PGK will screw into the nose of the
projectile A projectile is an object that is propelled by the application of an external force and then moves freely under the influence of gravity and air resistance. Although any objects in motion through space are projectiles, they are commonly found i ...
much like the existing
fuze In military munitions, a fuze (sometimes fuse) is the part of the device that initiates function. In some applications, such as torpedoes, a fuze may be identified by function as the exploder. The relative complexity of even the earliest fuze ...
. However, as well as the fuzing function it will provide a GPS
guidance Guidance may refer to: Arts and media * Guidance (album), ''Guidance'' (album), by American instrumental rock band Russian Circles * Guidance (film), ''Guidance'' (film), a Canadian comedy film released in 2014 * Guidance (web series), ''Guidance ...
package and control surfaces to correct the flight of the shell. This is analogous to the addition of a
Joint Direct Attack Munition The Joint Direct Attack Munition (JDAM) is a guidance kit that converts unguided bombs, or "dumb bombs", into all-weather precision-guided munitions. JDAM-equipped bombs are guided by an integrated inertial guidance system coupled to a Global Po ...
(JDAM) tail-kit to a dumb iron bomb, creating a precision guided munition. Production started in 2009.


Bushmaster autocannons

The
M242 Bushmaster The M242 Bushmaster chain gun is a 25 mm (25×137mm) single-barrel chain-driven autocannon. It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO members and some other nations in grou ...
is a 25 mm (25×137mm) chain-fed
autocannon An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bul ...
. It is used extensively by the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
and
NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two N ...
forces in ground
combat vehicle A combat vehicle, also known as a ground combat vehicle, is a self-propelled, weaponized military vehicle used for combat operations in mechanized warfare. Combat vehicles can be wheeled or tracked. History Ancient The chariot is a type o ...
s and watercraft. Originally, the weapon was designed and manufactured by
McDonnell Douglas McDonnell Douglas was a major American aerospace manufacturing corporation and defense contractor, formed by the merger of McDonnell Aircraft and the Douglas Aircraft Company in 1967. Between then and its own merger with Boeing in 1997, it ...
. It is an externally powered, chain driven, single-barrel weapon which may be fired in semi-automatic, burst, or automatic modes. It is fed by a metallic link belt and has dual-feed capability. The term "chain gun" derives from the use of a
roller chain Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, pri ...
that drives the bolt back and forth. The gun can destroy lightly armored vehicles and aerial targets, such as helicopters and slow-flying aircraft. It can also suppress enemy positions such as exposed troops, dug-in positions, and occupied built-up areas. The standard rate of fire is 200 rounds per minute. The weapon has an effective range of , depending on the type of ammunition used. The
Mk44 Bushmaster II The Mk44 Bushmaster II is a 30 mm chain gun manufactured by Northrop Grumman. It is a derivative of the 25 mm M242 Bushmaster, and uses 70% of the same parts as the M242 while increasing the firepower by as much as 50% with the 20% increas ...
is a
30 mm 30 mm caliber is a specific size of popular autocannon ammunition. Such ammunition includes NATO standard 30×113mmB and 30×173mm (STANAG 4624), Soviet 30×155mmB, 30×165mm, and 30×210mmB, Yugoslav 30×192mm, Anglo-Swiss 30×170mm, a ...
chain gun also manufactured by ATK. It is a derivative of the 25 mm M242 referenced above and uses 70% of the same parts as the M242. The Mk 44 Bushmaster II is the standard primary armament of the Bionix-II AFV currently in service with the
Singapore Army The Singapore Army is the land service branch of the Singapore Armed Forces (SAF). The largest of the four branches of the SAF, the Singapore Army traces its origins to the 1st Battalion, Singapore Infantry Regiment (1 SIR), which was formed ...
, the KTO Rosomak in Polish service as well as that of the CV90 AFVs in Finnish, Norwegian and
Swiss Swiss may refer to: * the adjectival form of Switzerland *Swiss people Places * Swiss, Missouri *Swiss, North Carolina * Swiss, West Virginia *Swiss, Wisconsin Other uses * Swiss-system tournament, in various games and sports * Swiss Internation ...
service. Some
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
vessels, such as the new ''San Antonio''-class amphibious transport dock are armed with the Bushmaster II for surface threat defense. The XM813 Bushmaster, also produced by ATK Defense, is based on the Mk44 and is offered as an upgrade for M1126 Stryker and
M2 Bradley The M2 Bradley, or Bradley IFV, is an American infantry fighting vehicle that is a member of the Bradley Fighting Vehicle family. It is manufactured by BAE Systems Land & Armaments, which was formerly United Defense. The Bradley is designed ...
. Improvements include a one-inch longer barrel, integral mount to increase first round hit probability by up to 10 percent, and dual recoil system to enhance accuracy and cope with future hotter propellants. It can have a next-round select, linkless feed system. The 30 mm chain gun can fire Mk310 Programmable
Air Burst An air burst or airburst is the detonation of an explosive device such as an anti-personnel artillery shell or a nuclear weapon in the air instead of on contact with the ground or target. The principal military advantage of an air burst over ...
Munition rounds to attack targets in defilade. The
United States Army Research, Development and Engineering Command The Combat Capabilities Development Command, (DEVCOM, aka CCDC) (formerly the United States Army Research, Development, and Engineering Command (RDECOM)) is a subordinate command of the U.S. Army Futures Command. RDECOM was tasked with "creating ...
helped enhance the XM813 mainly for safety and turret integration. By changing five parts, the gun caliber can be increased to 40 mm. As of November 2013, the XM813 was being tested at
Aberdeen Proving Ground Aberdeen Proving Ground (APG) (sometimes erroneously called Aberdeen Proving ''Grounds'') is a U.S. Army facility located adjacent to Aberdeen, Harford County, Maryland, United States. More than 7,500 civilians and 5,000 military personnel work a ...
.


ATK Sporting

ATK's Sporting Group offered products under several brands for sport-shooting enthusiasts, police, and military customers around the world. In 2015, this group was spun off to form the independent company, Vista Outdoor Inc. Vista Outdoor is publicly traded and headquartered in Utah. The group provided: * Traditional center fire and rim fire rifles, and shotguns * Ammunition for sport shooting, law enforcement, military, and security * Hunting, shooting sports, and outdoor recreation accessories * Optics, gun cleaning, targets and range systems * Tactical accessories for military, law enforcement and security markets * Gunpowder for ammunition and re-loaders ATK's outdoor products brands included:
Federal Premium Ammunition Federal Premium Ammunition is a wholly owned subsidiary of Vista Outdoor, located in Anoka, Minnesota. With a workforce of nearly 1,500, Federal manufactures shotshell, centerfire, and rimfire ammunition and components. History On April 27, ...
, Bushnell, Savage Arms, BLACKHAWK!, Primos, Final Approach, Uncle Mike's, Hoppe's, RCBS, Alliant Powder, CCI, Speer, Champion Targets, Gold Tip Arrows, Weaver Optics, Outers, Bolle, Cebe, and Serengeti. As of 2013, ATK's sporting business accounted for nearly 45 percent of the company's revenue.


See also

* List of modern armament manufacturers * Top 100 Contractors of the U.S. federal government *
Armor-piercing shell Armour-piercing ammunition (AP) is a type of projectile designed to penetrate either body armour or vehicle armour. From the 1860s to 1950s, a major application of armour-piercing projectiles was to defeat the thick armour carried on many wars ...
* M150 Penetration Augmented Munition


References


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* {{authority control Companies formerly listed on the New York Stock Exchange Aerospace companies of the United States Companies based in Virginia Ammunition manufacturers Defense companies of the United States Honeywell Manufacturing companies established in 1990 Firearm manufacturers of the United States 2015 mergers and acquisitions Corporate spin-offs