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Giat Industries 105 mm OFL 105 G2 APFSDS-T
Регіон
France
Категорія
Ammunition, Missiles and precision weapons
The 105 mm APFSDS-T OFL 105 G2 is a fixed round, with the projectile assembly crimped onto a M148A1B1-pattern cartridge case. The projectile assembly consists of a subprojectile and a sabot. The OFL 105 G2 subprojectile consists of a monobloc tungsten alloy core acting as the penetrator rod, the front part of which has an aluminium windshield with a steel tip to prevent aerodynamic heating. Length-to-diameter ratio is around 26:1. A six-finned aluminium fin assembly is fitted to the rear of the penetrator rod and
contains a tracer element. The penetrator rod is held in the three-segment, aluminium sabot assembly in a slip band arrangement, interfaced by mating buttresses (also referred to as drive splines). The slip band reduces the amount of spin assimilated by the penetrator rod during its passage down the gun bore after firing. Once the projectile assembly has left the muzzle the three sabot segments break away, taking the slip band with them. The cartridge case is 70:30 brass (steel may also be used), an electrical primer is also fitted into the base. Before loading the primer is normally protected by a metal clip over the base of the cartridge case. The propellant charge is 5.85 kg of an unspecified double-base multiperforated (19-hole) propellant. The OFL 105 G2 has a muzzle velocity of 1,525 m/s; residual velocity at 2,000 m is 1,387 m/s. It can penetrate a NATO single heavy tank target at 7,400 m and a NATO triple heavy tank target at 9,000 m. Time of flight to 2,000 m is 1.38 seconds. The maximum effective combat range is stated to be 2,000 m. The forerunner of the 105 mm APFSDS-T OFL 105 G2, the OFL F1, was announced in June 1979 and entered production in 1981. Although intended for use in all L7, Rh 105, M68 and CN105F1 guns, the utility of the OFL 105 F1 was mainly confined to French produced CN105F1 guns fitted to the AMX-30 series of main battle tanks. The OFL 105 F1 is now out of production, other than to special order, having been replaced by the OFL 105 G2. However, stocks of OFL 105 F1 rounds remain available for service.