CN08 120 mm gun

The CN08 is a 120 mm 55-caliber smoothbore gun designed by Agency for Defense Development and Hyundai Wia. It is often confused that it was developed with a based on Rheinmetall Rh-120 L55, but it was jointly developed by the Agency for Defense Development and Hyundai Wia from 2003 to 2008 for XK-2 tank development project started in 1995.[4]

CN08 120 mm gun
Muzzle of the CN08
TypeTank gun
Place of originSouth Korea
Service history
In service2014–present
Used bySouth Korea
Production history
DesignerAgency for Defense Development
Hyundai Wia
Designed2008
ManufacturerHyundai Wia
Specifications
Mass1,324 kg (2,919 lb) Gun barrel
Length6.6 m (22 ft)
Barrel length55 calibers
Calibre120 millimetres
Muzzle velocity1,640 to 1,760 m/s (5,400 to 5,800 ft/s) with K279 APFSDS-T[1]
1,678 to 1,800 m/s (5,510 to 5,910 ft/s) with Improved K279 APFSDS-T[2]
Effective firing range3,000 meters (3,300 yd)[3]

Description

The CN08 is the main armament of the K2 Black Panther. The CN08 120mm L/55 smoothbore gun is applied with Internal chrome plating technology for large-caliber gun. A large-caliber gun can endure a high explosive force as a result of the increased stiffness and wear resistance provided by this internal hard chromium surface.[5][6][7] The chamber pressure of the main gun is 690 MPa (100,076 psi), and muzzle velocity is 1,800 m/s (5,900 ft/s).[2] This 120 mm gun is complemented by an autoloader, it can fire up to 10 rounds a minute. It depends on the type of ammunition, but the effective firing range of the main gun is 3,000 meters (3,300 yd).[3]

Ammunition

A list of ammunition that can be used in CN08 120 mm gun.

APFSDS Rounds[1][2][5][8][9][10][11][12]
Ammunition Compatible tank gun Type Penetrator Chamber pressure (MPa) Muzzle velocity (m/s) Ammunition weight (kg) Ammunition length (mm) Projectile mass (kg) Projectile length (mm) Penetrator mass (kg) Penetrator length (mm) RHA penetration (mm) Notes
K276 CN03, M256, CN08 APFSDS-T Composite tungsten 586 1700 19.7 973 703.6 7.35 600 600 at 2000 m Self-Sharpening
K279 CN03, M256, CN08 APFSDS-T Composite tungsten 1760 21.3 998 8.6 761.6 8.27 700 at 2000 m Surface Coated Double Base (SCDB)
Improved K279 CN03, M256, CN08 APFSDS-T Composite tungsten 690 1800 21.3 998 8.6 761.6 8.27 Self-Sharpening
SCDB
Dynamic muzzle reference system of the CN08 120 mm gun.
HEAT Rounds[1][8][9][13]
Ammunition Compatible tank gun Type Filler Chamber pressure (MPa) Muzzle velocity (m/s) Ammunition weight (kg) Ammunition length (mm) Projectile mass (kg) Projectile length (mm) Penetrator mass (kg) Penetrator length (mm) RHA penetration (mm) Notes
K277 CN03, M256, CN08 HEAT-MP-T Comp-B 448 1130 24.5 989 713.32 14.31 600
K280 CN03, M256, CN08 HEAT-MP-T Comp-B 1400 23 998 792.75 11.38
KSTAM-I CN08 Terminal guidance TSCW 750 Effective range of 2.5 km to 5 km
KSTAM-II CN08 Fire-and-forget EFP Effective range of 2 km to 8 km
Quality test of the produced CN08 120 mm gun
Practice Rounds[8][9]
Ammunition Compatible tank gun Type Filler Chamber pressure (MPa) Muzzle velocity (m/s) Ammunition weight (kg) Ammunition length (mm) Projectile mass (kg) Projectile length (mm) Penetrator mass (kg) Penetrator length (mm) RHA penetration (mm) Notes
K282 CN03, M256, CN08 TPCSDS-T 448 1130 24.5 989 713.32 14.31 For target practice
K287 CN03, M256, CN08 TPCSDS-T Fe Powder Sintered 1130 22.9 980 For target practice
  • Muzzle flash of the CN08 120 mm gun.
  • K279 APFSDS-T and K280 HEAT-MP-T rounds for CN08 120 mm gun.

Export

Turkey
Further information: MKE 120 mm tank gun

On July 29 2008, Hyundai Rotem and Otokar signed a contract for design assistance and technology transfer for the Altay Tank Development Project. This contract includes design support and technology transfer for systems, armor package, and 120 mm guns required for Altay tank development.[14][15][16][17]

Variants
    • MKE 120 mm gun: Turkish 120 mm 55 caliber smoothbore gun based on the CN08. The design of the gun barrel is the same as that of CN08, but unlike Dynamic Muzzle Reference System of CN08, MKE 120 mm gun uses the Static Muzzle Reference System, and some other elements, including breech, are designed differently depending on the design requirements of the Altay tank.

Operators

See also

Weapons of comparable role, performance and era

References
  1. Security Management Institute (25 May 2018). "화기별·탄종별 사격장 안전기준 정립 연구". Republic of Korea Army Headquarters. Archived from the original on 14 October 2021. Retrieved 14 October 2021.
  2. Agency for Defense Development (9 December 2016). "Pressure Analysis and Conceptual Design for Indoor Ballistic Test Range by Numerical Methods" (PDF). Korea Science. Archived from the original (PDF) on 14 October 2021. Retrieved 14 October 2021.
  3. "Gun & Artillery System" (PDF). Hyundai Wia. Archived from the original (PDF) on 14 October 2021. Retrieved 14 October 2021.
  4. Lee Jihun (5 January 2016). "방위산업, 저성장 시대의 대안" (PDF). SK Securities. Archived from the original (PDF) on 28 October 2021. Retrieved 28 October 2021., p.14
  5. Agency for Defense Development (30 December 2005). "Effect of CCC Composition on Burning Characteristic for 120mm Kinetic Energy Ammunition" (PDF). Korea Science. Archived from the original (PDF) on 19 October 2021. Retrieved 19 October 2021.
  6. Cotec (1 July 2008). "시뮬레이션 기법을 이용한 장축 실린더 내경도금의 전류분포 기술지원" (PDF). Ministry of Knowledge Economy. Archived from the original (PDF) on 14 October 2021. Retrieved 14 October 2021.
  7. Defense Agency for Technology and Quality (7 October 2015). "Study On Effect of Fe Density on Electrolyte Exfoliation of Chromium Plating Layer" (PDF). Korea Science. Archived from the original (PDF) on 14 October 2021. Retrieved 14 October 2021.
  8. Poongsan Corporation. "Ammunition and Explosives" (PDF). Archived from the original (PDF) on 17 October 2021. Retrieved 17 October 2021.
  9. Poongsan Corporation (2020). "풍산탄약". MADEX. Archived from the original on 14 October 2021. Retrieved 14 October 2021.
  10. Defense Agency for Technology and Quality (29 February 2020). "Study on the Improving Penetration Performance of Tungsten Heavy Alloy Penetrator by Heat Treatment" (PDF). Korea Science. Archived from the original (PDF) on 17 October 2021. Retrieved 17 October 2021.
  11. Poongsan Corporation (17 May 2012). "Study on the Temperature Independent Property of the Surface Coated Double Base Propellant" (PDF). Korea Science. Archived from the original (PDF) on 17 October 2021. Retrieved 17 October 2021.
  12. Agency for Defense Development (1 October 2004). "Manufacturing of Tungsten Heavy Alloy Composites for Kinetic Energy Penetrator" (PDF). Korea Science. Archived from the original (PDF) on 17 October 2021. Retrieved 17 October 2021.
  13. Agency for Defense Development (31 January 2006). "A Trade Study of the Top Attack Smart Tank Ammunition" (PDF). Korea Science. Archived from the original (PDF) on 17 October 2021. Retrieved 17 October 2021.
  14. Hyundai Rotem (31 July 2008). "터키 전차개발 기술협력 계약 체결". Hyundai Rotem. Archived from the original on 10 October 2021. Retrieved 10 October 2021.
  15. Kim Gwigeun (11 October 2009). "'흑표' 기술수출료 2014년까지 사용유예". Yonhap News. Archived from the original on 10 October 2021. Retrieved 10 October 2021.
  16. Choi Seunguk (20 October 2014). "[방산업계 울리는 ADD] 터키 수출 K-2전차 기술료 다 챙겨…'700억 돈잔치' 벌이겠다는 ADD". Korea Economic Daily. Archived from the original on 10 October 2021. Retrieved 10 October 2021.
  17. Army Recognition (1 October 2021). "Altay MBT Main Battle Tank". Army Recognition. Archived from the original on 4 December 2021. Retrieved 24 October 2021.
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