85 mm HEAT-FS BK-2M

manufactured by ROMARM, although series production is no longer carried out. A generally similar round is produced in China by NORINCO. Also likely to be encountered are the generally similar HEAT-FS BR-367P and BR-367PZ, developed in Poland . These rounds have projectiles weighing 5.3 kg and can penetrate 180 mm of armour at 1,000 m. All these rounds have a secondary function against fixed structures such as field fortifications. Description The 85 mm HEAT-FS BK-2M is normally loaded as a fixed piece of ammunition, although it is apparently possible to remove the projectile from its brass cartridge case on some versions - other versions have the projectile assembly crimped to the cartridge case. The body of the projectile is steel and is provided with a single 24.7 mm wide slipping drive band made of sintered iron. The nose of the 85 mm HEAT-FS BK-2M is conical and carries a prominent impact sensor. The steel body contains 920 to 970 g of A-IX-1 (RDX/Wax) contained behind a conical metal liner. An internal connection between the nose-mounted impact fuze and the GPV-2 base detonating element is used to initiate the main charge and form a high-temperature particle jet to penetrate the target. The base of the projectile carries a tubular steel boom carrying six forward-folding fins which snap out to provide a fin span of 336.55 mm for flight stabilisation. The ends of the fins have angled vanes which impart a slow rotation to assist in aerodynamic stabilisation. A No 9 tracer element housing is located in the base of the tubular boom. The lacquered steel or brass cartridge case contains 2.047 kg of 12/1 Tr and 11/7 stick and granualar propellant providing a muzzle velocity of 840 to 850 m/s. It has been stated that the warhead can penetrate approximately 300 mm of armour at any range. The maximum practical direct fire range is stated to be 910 m. Other 85 mm rounds produced that are likely to be encountered include the 85 mm Smoke D-367, the Smoke D-2 (complete round weight 16 kg, projectile weight 9.54 kg), TP/Prac PBP-367 and Blank MK-365. Also produced were water-filled cartridges fired to make gun recoil mechanisms operate in maintenance or confined areas, examples being the 85 mm Zh-365 and the East German HOF-1. Authorised fuzes PIBD GPV-2 Equivalent rounds CHINA , PEOPLE'S REPUBLIC CHINA Manufacturer China North Industries (NORINCO) Type: 85 mm HEAT-FS Description: Developed for use with 85 mm gun Type 56. The projectile weighs 12.5 kg, 647 g of which is the RDX/TNT 50:50 filling. Muzzle velocity is 845 m/s and direct fire range 970 m. The warhead can penetrate 100 mm set at an angle of 65º. Fitted with PIBD Dian-1A fuze ROMANIA Manufacturer SN ROMARM SA Type: HEAT BK-2M Description: No longer in series production. Standard specifications