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122 mm HEAT-FS-T BK-13
Регіон
Bulgaria
Czech Republic
Категорія
Боєприпаси, ракети та високоточне озброєння
Armament 122 mm Howitzer D-30 ; NORINCO 122 mm Howitzer D-30 ; 122 mm Howitzer D-30 RH M94 ; 122 mm Howitzer D-30J ; Factory 100 D-30-M; 122 mm Saddam Howitzer; Hadid 122 mm Howitzer HM40. NORINCO 122 mm Self-propelled Howitzer Type 85 ; 122 mm Self-propelled Howitzer M-1974 ( 2S1 ); Model 89 122 mm Self-propelled Howitzer ; Hadid 122 mm Self-propelled Howitzer HM51 ( Thunder 1 ). Development The 122 mm HEAT-FS-T BK-13 is the latest model of fin-stabilised HEAT projectile intended for firing from towed D-30 and
self-propelled 2S1 howitzers. The complete round is known as the 3UBK-9. There is also a BK-13M projectile for use with 2S1 self-propelled howitzers. A projectile similar to the BK-13M has been produced in Poland as the BK-13MP. Description The 122 mm HEAT-FS-T BK-13 projectile is normally fired as a fixed round, the 3UBK-9, although it is apparently possible to separate the projectile and its cartridge case. The 3UBK-9 round uses its own particular type of cartridge case loaded with a fixed propellant charge. The steel body of the 122 mm HEAT-FS-T BK-13 projectile has straight sides and a blunt nose with a central boom carrying the fuze impact sensor. A solid slipping drive band 28.19 mm wide is made of copper. A tubular boom assembly carrying six forward-folding fins protrudes from the base. These fins snap out once the projectile has left the muzzle and when fully deployed have a span of 369.16 mm. The boom assembly carries a tracer element. The steel projectile body contains 1.8 kg of A-IX-1 (RDX/Wax) explosive formed behind a conical metal liner. An internal connection from the nose-mounted piezoelectric impact sensor to the V-15 point impact base detonating fuze will detonate the main charge and utilise a wave shaper to create a high-temperature particle jet estimated to be capable of penetrating approximately 400 mm of armour at any range. Unlike most other projectiles in the 122 mm D-30/2S1 range, the 122 mm HEAT-FS-T BK-13 projectile is combined with its own specific 447 mm long lacquered steel cartridge case with a fixed propellant load consisting of 3.8 kg of 12/7, 12/7 Tr and VTH-10 propellant ignited by a KV-U or KV-4 percussion primer. This produces a muzzle velocity of 690 m/s and a maximum effective range of 1,000 m. Authorised fuzes PIBD V-15 Equivalent rounds BULGARIA BULGARIA Manufacturer Vazov Engineering Plants Type: 122 mm Hollow Charge Round Description: Equivalent to BK-13. Standard specifications. BK-13M equivalent also produced Marketing agency Kintex Type: HEAT-FS 3UBK-9 Description: Standard specifications CZECH REPUBLIC Manufacturer Caliber Prague Limited Type: 122 mm HE Description: Standard specifications