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Shipunov 2A42
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The Shipunov 2A42 is a Soviet/Russian 30 mm autocannon. It is built by the Tulamashzavod Joint Stock Company and named after A. G. Shipunov.[3]
Key Information
Design
[edit]The 30 mm 2A42 autocannon was developed as a replacement for 2A28 Grom and has a dual feed. One is for HE-T and the other for AP-T rounds. The gunner can select one of two rates of full automatic fire, low at 200 to 300 rds/min and high at 550 to 800 rds/min.[4] According to the manufacturer, effective range when engaging ground targets such as light armoured vehicles is 1,500 m (4,900 ft) while soft-skinned targets can be engaged out to 4,000 m (13,000 ft). Air targets can be engaged flying at low altitudes of up to 3,000 m (9,800 ft) at subsonic speeds, and up to a slant range of 2,500 m (8,200 ft).[5] In addition to being installed in a two-person turret on the BMP-2 mechanised infantry combat vehicle, this gun is also fitted in the BMD-2 airborne combat vehicle, BMD-3 airborne combat vehicle and BTR-90 (or GAZ-5923) (8 × 8) armoured personnel carrier. A small number of these have now entered service. More recently, the 30 mm 2A42 cannon has been installed in a new turret and fitted onto the roof of the BTR-T heavy armoured personnel carrier based on a modified T-54/T-55 MBT chassis. The cannon is also the main armament of BMPT (Tank Support Fighting Vehicle). It is also used for various armament projects from various manufacturers. The design bureau for the 30 mm 2A42 cannon is the KBP Instrument Design Bureau.
The 2A42 autocannon has also been used on the BMPT and Bumerang-BM, and on unmanned remote controlled weapon station turrets on the new Russian infantry fighting vehicles including the Kurganets-25, VPK-7829 Bumerang, and T-15 Armata.
Variants
[edit]- 2A42 – standard version.
- 2A72 – lighter simplified variant with a lower number of parts, a longer barrel, and higher muzzle velocity, but also a lower rate of fire. It is long recoil-operated, not gas-operated.
- ABM-M30M3 – remote Weapon Station made by Impulse-2, for Uran-9 or different armored vehicles.
- ABM-M30M3 Vikhr – another remote weapon station made by Impulse-2.
- TRT-30 – remote weapon station.[8]
- ZPT-99 – In the 1990s, the People's Republic of China imported BMP-3 weapon systems technology, and then they re-introduced the cannon. The Chinese production model of 2A72 was named ZPT-99. It was widely used by Chinese armored fighting vehicles.[9]
- ZTM-1, KBA-2 – Ukrainian production[9]
Ammunition
[edit]The 2A42 fires 30×165mm ammunition, a cartridge introduced in the 1970s in the Soviet Union to replace previous 30 mm autocannon cartridges. Other weapons using this size of cartridge case include the 2A38, 2A38M, and 2A72 autocannons for various vehicle, helicopter and air defence applications, as well as numerous single-, dual- and six-barrel naval and air force cannons. The 2A42, 2A38, 2A38M, and 2A72 fire percussion-primed ammunition; the naval and aerial cannons use electrical priming, and therefore their ammunition is not interchangeable with the land-based ammunition types, despite the same cartridge case size.[10][11]
Originally three basic types of ammunition were developed in the Soviet Union for the land-based weapons: high-explosive incendiary, high-explosive fragmentation with tracer, and an armour-piercing ballistic capped with tracer. Later a sub-caliber armour-piercing round was introduced, and today also countries other than Soviet Union/Russia manufacture 30x165 mm percussion-primed ammunition. The main types of ammunition are summarized in the table below:
| Designation | Type | Projectile weight (g) | Bursting charge (g) | Muzzle velocity (m/s) | Notes | Penetration |
|---|---|---|---|---|---|---|
| 3UOF8[12] | HEI | 389 g (13.7 oz) | 49 g (1.7 oz) A-IX-2 | 960 m/s (3,100 ft/s) | A high-explosive incendiary round with A-670M nose fuze.[13] The fuze produces a 0.15 millisecond delay on impact, and a self-destruct mechanism detonating the projectile after 7.5 to 14.5 seconds of flight (3,900 to 5,000 m (12,800 to 16,400 ft) distance from muzzle).[10] | N/A |
| 3UOR6[12] | HE-T | 385 g (13.6 oz) | 11.5 g (0.41 oz) A-IX-2 | 960 m/s (3,100 ft/s) | Nose-fuzed high-explosive fragmentation tracer round, utilizing the same A-670M impact/self-destruct fuze as the 3UOF8. Tracer burn time 14 seconds. | N/A |
| 3UBR6[12] | APBC-T | 400 g (14 oz) | none | 970 m/s (3,200 ft/s) | Solid shot with blunt penetrator covered by a hollow windshield cap.[13] Tracer burn time 3.5 seconds. | 20mm RHA at 60 degree impact, 700 m (2,300 ft) range; 22 mm (0.87 in) RHA at 60 degree impact, 500 m (1,600 ft) range[14] |
| 3UBR8[12] | APDS | 304 g (10.7 oz) | none | 1120 | A sub-caliber discarding sabot. No tracer. | 25 mm (0.98 in) RHA at 60 degree impact, 1,500 m (4,900 ft) |
| 3UBR10[15] | APBC-T | 398 g (14.0 oz) | none | 970 m/s (3,200 ft/s) | A development of 3UBR6 with plastic driving band for reduced barrel wear. Expected to enter service in 2020 | 20 mm (0.79 in) RHA at 60 degree impact, 700 m (2,300 ft) |
| 3UBR11[15] | APFSDS-T | none | Modern APFSDS round, developed late 2010s. Production and service status unknown. 1.5 second tracer burn. | Unknown | ||
| M929[16] | APFSDS-T | 235 g (8.3 oz) | none | 1,260 m/s (4,100 ft/s) | A sub-caliber fin-stabilized discarding sabot round with tracer from Belgian Mecar, with tungsten alloy penetrator. | More than 50 mm (2.0 in) RHA at 60 degree impact, 1,000 m (3,300 ft) |
Airburst munitions for Russian 30mm and 57mm autocannons are in development.[17][18][19][20]
Platforms
[edit]
The autocannon has been used since the 1980s on the following platforms:
- 2T Stalker
- MT-LBM 6MB
- BMP-1AM (2A72)
- BMP-2
- BMP-3 (2A72)
- BMD-2
- BMD-3
- BMD-4 (2A72)
- BTR-3 (2A72)
- BTR-4 (2A72)
- BTR-80A (2A72)
- BTR-82A (2A72)
- BTR-87
- BTR-90
- BTR-T
- GAZ Vodnik with BPPU module (2A72)
- BPsVI/BVP-M
- BMPT
- Fahd 280-30
- Boragh
- T-15 Armata
- VPK-7829 Bumerang
- Kurganets-25
- Lazar 3
- Makran IFV
- Scorpion IFV (2A72)
- Toros
- Tosan IFV
- Volat V2
- ZBD-86A (2A72)
- ZSL-92B (2A72)
- ZBD-03 (2A72)
- ZBD-04 (2A72)
- ZBD-05 (2A72)
- ZBL-08 (2A72)
Similar 30mm autocannons
[edit]The 2A72 30mm autocannon, designed by KBP Instrument Design Bureau, is a lighter, less complex cousin of the 2A42, with a longer barrel. While the latter has 578 parts, 2A72 has only 349 parts, allowing it to weigh only 84 kg (with 36 kg barrel). 2A72 uses long recoil principle, resulting in lower recoil (7t instead of 20), but lower rate of fire (300-330 instead of 550). 2A72 is used in:
- BMP-3 – mounted in between 2A70 100 mm gun/launcher and PKT coaxial MG
- ABM-M30M3 – remote Weapon Station made by Impulse-2, for Uran-9 or different armored vehicles.
- ABM-M30M3 Vikhr – another remote weapon station made by Impulse-2.
- TRT-30 – remote weapon station.[8]
The 2A38 and 2A38M are 30mm twin-barrel autocannons, Gast-type. They are mainly used on air defense vehicles like 2K22 Tunguska and Pantsir-S1. It weighs 195 kg and has a maximum rate of fire of 2500 rd/min.
The Ordnance Factory Medak in India has developed the Medak gun[citation needed] and CRN 91 Naval Gun out of this platform.
Users
[edit]Current operators
Algeria
China[9]
Czech Republic
Egypt
Finland
India
Iraq
Iran
Russian Federation
Serbia
Slovakia
Syria
Ukraine
Viet Nam
Former operators
See also
[edit]References
[edit]- Notes
- ^ "30 mm automatic gun 2A42". ztsspecial.sk.
- ^ "2A42 30mm Automatic Cannon – Minotor-Service, Minsk, Belarus". minotor-service.com. Archived from the original on 2 February 2020. Retrieved 4 May 2015.
- ^ "30mm Shipunov 2A42". Weaponsystems.net.
- ^ "ОАО "Конструкторское бюро приборостроения" – 2А42". kbptula.ru. Archived from the original on 7 February 2021. Retrieved 11 January 2015.
- ^ "30-mm AUTOMATIC GUN 2A42". Tulamashzavod. Archived from the original on 20 October 2014. Retrieved 11 January 2015.
- ^ "Strazh new Ukrainian BMPT fire support vehicle based on T-64 MBT". 27 October 2017. Retrieved 5 February 2024.
- ^ "30 mm automatic gun 2A42 / GTS-30". Retrieved 25 February 2024.
- ^ a b "RG31 gets TRT-30 weapon system". Jane's 360.
- ^ a b c "30 mm 2A72". Weaponsystems.net.
- ^ a b Jane's Ammunition Handbook 2009, "Cannon – 20 to 30 mm cannon."
- ^ "An introduction to collecting 30 mm cannon ammunition". Archived from the original on 13 August 2022. Retrieved 1 March 2019.
- ^ a b c d "Land Forces Weapons" (PDF). Archived from the original (PDF) on 14 September 2020. Retrieved 1 March 2019.
- ^ a b "Russian Ammunition Page, http://www.russianammo.org
- ^ [arsenal-bg.com/c/30x165-mm-rounds-for-automatic-guns-2a38-2a42-and-2a72-137/rapit-capap-t-199 JSC Arsenal AD website.] Retrieved 04/17/2023.
- ^ a b "30 mm rounds for small-caliber automatic guns of Ground Troops". Archived from the original (JPG) on 8 August 2021.
- ^ https://www.nexter-group.fr/images/catalogues/nexter_catalogue_munitions_2016_en.pdf [dead link]
- ^ "Russia's military built a "Terminator" and now it's getting smart weapons". Newsweek. 21 June 2018.
- ^ "Russia to develop anti-drone shrapnel ammunition". TASS.
- ^ "UVZ to unveil modernized BMP-1 with 2A72 cannon at Army 2018 | August 2018 Global Defense Security army news industry | Defense Security global news industry army 2018 | Archive News year". www.armyrecognition.com. 16 August 2018.
- ^ "Russia has developed low cost programmable air explosive ammunition that can be detonated by laser remote control. | jqknews". Archived from the original on 28 November 2018. Retrieved 27 November 2018.
- ^ "New K-4386 Typhoon-VDV 4x4 armoured field tested by Russian army". www.armyrecognition.com.
- ^ "Russia upgrades Uran-9 combat UGV". Jane's 360.
- Bibliography
- Koll, Christian (2009). Soviet Cannon – A Comprehensive Study of Soviet Arms and Ammunition in Calibres 12.7mm to 57mm. Austria: Koll. p. 271. ISBN 978-3-200-01445-9.
External links
[edit]Shipunov 2A42
View on GrokipediaDevelopment
History
The development of the Shipunov 2A42 autocannon was initiated in the 1970s by the KBP Instrument Design Bureau in Tula, under the leadership of Arkady Georgievich Shipunov, who served as chief designer from 1962 until 2006, with production handled by Tulamashzavod JSC.[3][13][1] This effort aimed to create a more effective weapon to replace the 2A28 Grom low-pressure 73 mm gun mounted on BMP-1 infantry fighting vehicles, addressing limitations in firepower and range observed in earlier Soviet designs.[4] In the late 1970s, the 2A42 was selected to arm the BMP-2 infantry fighting vehicle, reflecting broader Soviet modernization programs to enhance mechanized infantry capabilities during the Cold War.[14] Key design goals included incorporating a dual-feed mechanism to enable rapid switching between high-explosive and armor-piercing ammunition types without reloading, alongside an improved rate of fire compared to predecessors like the 2A28, thereby increasing tactical flexibility and combat effectiveness.[4][1] The 2A42 entered service in 1980 alongside the BMP-2, which was formally accepted by the Soviet Army that year after trials, marking a significant upgrade in armored vehicle armament.[15][16] Following the dissolution of the Soviet Union, Tulamashzavod continued production of the 2A42 into the post-Soviet era, with upgrades focused on reliability and integration with modern fire control systems, while export versions were developed and supplied to international partners in the 1990s and 2000s, including licensed production agreements.[17][18]Design Features
The Shipunov 2A42 autocannon features a gas-operated action that incorporates a short recoil impulse of approximately 20 tons, ensuring robust performance under combat conditions. This mechanism employs a vertically sliding breech block, which contributes to the weapon's reliability and ease of maintenance.[5][19] A distinguishing engineering aspect is the dual-feed system, which supports two independent ammunition belts—one for high-explosive rounds and the other for armor-piercing rounds—allowing the gunner to switch between ammunition types seamlessly via electrical controls without interrupting the firing sequence.[20] The barrel is rifled with 16 right-hand twist grooves over a length of 2,416 mm, promoting stability and accuracy for the 30×165 mm cartridges. The overall cannon measures 3.027 m in length and weighs 115 kg excluding the mount, facilitating its integration into vehicle platforms. Developed in the 1970s, the 2A42's modular construction enables adaptable mounting in stabilized turrets equipped with fire control systems, while recoil management features help minimize vibration during sustained fire.[21]Technical Specifications
Operating Mechanism
The Shipunov 2A42 autocannon utilizes a gas-operated mechanism, where high-pressure powder gases are tapped from the barrel through a port to impinge on an operating piston, initiating the recoil cycle. This gas drive unlocks the breech by rotating the bolt, which is locked to the barrel via two lugs engaging windows in the receiver casing; during firing, the barrel and bolt group recoil together a short distance before the bolt rotates to unlock, allowing extraction of the spent casing by the extractor located in the bolt carrier. The ejector, housed in the bolt with a spring drive, propels the empty casing away, completing the cycle as the bolt carrier moves rearward under gas pressure, cocks the firing pin, and compresses recoil springs before forward movement chambers the next round from the selected feed belt.[5] The dual-belt feed system enables versatile ammunition selection, with the upper feed channel typically loaded with armor-piercing rounds and the lower with high-explosive rounds, fed from opposite sides of the receiver to allow alternate or switched usage without interruption. A mechanical selector lever on the receiver engages the appropriate feed pawl, permitting the gunner to switch belts automatically during a burst or manually as needed, ensuring the two-way feed mechanisms advance the chosen belt into the chamber during the forward stroke of the bolt carrier. This innovation supports rapid transitions between round types mid-engagement.[5] Firing is initiated electrically through a solenoid-actuated firing pin fixed in the bolt, triggered by an external electrical impulse from the vehicle's fire control system once the breech is fully locked and cocked. The cyclic rate of the gas-operated action is regulated by adjustments to the gas port or regulator, which modulates the volume of propellant gases directed to the piston for controlled recoil impulse and bolt velocity. The sequence concludes with the propellant gases venting through the muzzle brake after each shot, maintaining operational continuity.[5] Safety features include mechanical interlocks that prevent solenoid activation and firing unless the breech is fully closed and locked, with the bolt in the forward position. The system requires manual cocking via a rear ratchet handle to ready the firing pin, providing an additional safeguard against accidental discharge; an optional squib cartridge enables rapid emergency cocking and reloading in the field. These elements ensure reliable operation without unintended cycling.[5] For maintenance, the 2A42 supports field-stripping procedures that allow disassembly of the barrel, bolt group, and feed mechanisms without specialized tools, facilitating inspection, cleaning, and replacement directly from the vehicle's turret. This design enables crews to address jams, replace worn components like the barrel or bolt carrier, and restore functionality during operations, contributing to the weapon's high reliability under combat conditions.[22]Performance Characteristics
The Shipunov 2A42 autocannon features a selectable rate of fire, with a low setting of 200–300 rounds per minute for sustained engagements and a high setting of 550–800 rounds per minute for rapid suppression. It supports sustained fire of up to 500–600 rounds without required cooling pauses.[5][1] The cannon has a weight of 115 kg and a barrel length of 2.416 m. Its effective range extends to 1,500 meters against point targets such as armored vehicles and up to 4,000 meters against area targets like soft-skinned vehicles or infantry concentrations, with a maximum range of 4,000 meters.[23][1] Muzzle velocity varies by ammunition type, reaching approximately 960 m/s for armor-piercing (AP) rounds and around 900–970 m/s for high-explosive (HE) rounds, enabling effective kinetic and fragmentation effects at engagement distances.[23] The 3UBR8 APDS round provides penetration of about 25 mm of homogeneous rolled armor at 1,500 meters at a 60° angle, sufficient for defeating light armored threats while the gun's dual-feed system allows quick switching between APDS and HE for versatile combat roles.[24] When mounted with stabilization systems, the 2A42 achieves high accuracy, enabling effective hits against moving targets at ranges up to 1,000 meters through integrated laser rangefinders and fire control enhancements.[1]Variants and Ammunition
Variants
The standard Shipunov 2A42 is the original dual-feed, gas-operated 30 mm autocannon developed in the 1970s, primarily equipping the BMP-2 infantry fighting vehicle and BMD-2 airborne assault vehicle with its stabilized turret mounting.[25] The 2A72 represents a simplified and lighter derivative of the 2A42, featuring a recoil-operated mechanism with fewer components (349 parts compared to 578 in the original), a weight of 84 kg, and a reduced rate of fire of 300–330 rounds per minute while retaining a selectable twin-feed system for versatility.[26] This variant prioritizes ease of production and integration on lighter platforms, such as the coaxial mounting in the BMP-3 and main armament in the BTR-90 wheeled armored personnel carrier.[26] Export-oriented models, designated as the 2A42M, incorporate minor ergonomic enhancements and barrel life extensions up to 9,000 rounds to meet international market demands in the 1990s.[27] Post-2000 modernizations integrate the 2A42 with advanced digital fire control systems, including multi-channel optical sights and automatic target tracking, as seen in the BMP-2M upgrade package to enhance precision and engagement range.[28][29] Licensed foreign variants include the Ukrainian ZTM-2 production model, the Slovak GTS-30 and GTS-30/A with modified muzzle brakes, and the GTS-30/N adapted for 30×173mm NATO ammunition. For the 2A72, notable productions are the Chinese ZPT-99 and Ukrainian ZTM-1 and KBA-2.Ammunition Types
The Shipunov 2A42 autocannon utilizes the 30×165mm cartridge, a rimless, bottlenecked round introduced in the 1970s by the Soviet Union to standardize ammunition across 30 mm autocannons, replacing earlier non-uniform designs.[24]| Designation | Type | Description |
|---|---|---|
| 3UOF8 | HEI | High-explosive incendiary round for use against soft targets. |
| 3UOR6 | HE-T | High-explosive tracer round designed for suppressing infantry and unarmored vehicles through blast, fragmentation, and incendiary effects. |
| 3UBR6 | APBC-T | Armor-piercing ballistic capped tracer round, full-caliber solid-core projectile optimized for light armor at closer ranges. |
| 3UBR7 | AP-T | Armor-piercing tracer round for anti-armor engagement. |
| 3UBR8 | APDS | Armor-piercing discarding sabot round with tungsten-core penetrator and tracer for enhanced penetration against armored vehicles. |
| 3UBR10 | APBC-T | Improved APBC-T with plastic driving band for better performance. |
| 3UBR11 | APFSDS-T | Armor-piercing fin-stabilized discarding sabot tracer round for modern anti-tank roles. |
| M929 | APFSDS-T | Belgian sub-caliber fin-stabilized round with tracer. |