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152 mm FRAG-HE 3OF25
Регіон
Ukraine
Категорія
Боєприпаси, ракети та високоточне озброєння
The 152 mm FRAG-HE 3OF25 is the 152 mm FRAG-HE 3OF25 projectile forms part of a separate loading item of ammunition consisting of the projectile and a variable charge system contained in a brass or lacquered steel cartridge case. The projectile is forged high-fragmentation steel with a long streamlined ogive, a boat tail and a shallow bourrelet. A single copper drive band is just over 24 mm wide. The contents are a nominal 6.8 kg of A-IX-2 explosive. The 152 mm ammunition uses a two-part variable charge system
contained in brass or lacquered steel cartridge cases 547.5 mm long. The two parts are the Reduced Charge and the Full Charge, each in its own cartridge case. The Reduced Charge uses 9/7, 4/1 and 8/1 Trinitrocellulose powder in a series of 12 bags. Charge 6, the lowest, comprises the base bag charge only, to which a series of equal size bags are added creating higher charges. One charge bag is added to the base charge bag to comprise Charge 5, two are added for Charge 4, three for Charge 3 and five for Charge 2. These are all held in place by a fibre cup. The total weight of the Reduced Charge propellant is 4.2 kg. Maximum muzzle velocity produced by the Reduced Charge is 511 m/s. The Full Charge uses, NDT-3 16/1 or NGH powder in bags together with 150 g of 8/1 UG flash reducing agent plus S-1 decoppering agent. Charge 1 has two base bag charges, one located above the other. To create the Full Charge two further equal size bag charges are added; as mentioned previously a fibre cup holds the charge bags in place. The total weight of the Full Charge propellant is 8.8 kg. Maximum muzzle velocity produced by the Reduced Charge is 655 m/s. Both charges are initiated by a KV-4 percussion primer in the base of the cartridge case. With the Full Charge the maximum muzzle velocity is 655 m/s providing a maximum range of 17,400 m. With the reduced charge the muzzle velocity is circa 511 m/s and maximum range is 13,400 m.