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Cartridge, 40 mm: L/70 HCHE
Регіон
Brazil
Spain
Категорія
Боєприпаси, ракети та високоточне озброєння
The 40 mm L/70 HCHE is a fixed round with a brass cartridge case. The cartridge case is crimped rigidly to the projectile by two 360º crimping bands. A copper drive band encircles the projectile just above the cartridge case/projectile junction. The 40 mm L/70 HCHE projectile uses a special grade of steel, strong enough to penetrate armour plate up to approximately 20 mm thick without being damaged beyond utility. The explosive contents are 165 g of Octonal with an aluminium additive to increase the incendiary
effects, all ignited by a nose-mounted Fz 104 M12 point detonating fuze with a delay element. The delay ensures that the maximum blast, fragmentation and incendiary effects can be obtained on and inside a target. The drawn 70:30 brass cartridge case has a semi-rimmed base and is fitted with a percussion primer with a sinoxide detonator. The propellant used is a low-erosion, flash reduced, single-base nitrocellulose tubular powder (NC 1066) producing a muzzle velocity of 1,030 m/s. The 40 mm L/70 High Capacity High Explosive (HCHE) is a further development of the standard Bofors L/70 HE-T round, intended as a multipurpose projectile with good anti-armour effects. It is no longer in regular production in Sweden as Bofors AB now considers the 40 mm L/70 MPT (see separate entry) to be a more viable and effective round. Other nations, however, continue to deploy the L/70 HCHE. Applications include all 40 mm L/70 Bofors Guns including: 40 mm L/70 BOFI; TRINITY; SAK 40 L/70 ; L/70 Combat Vehicle Gun (40/70 B); Otobreda Twin 40L70 Field Mounting ; Otobreda Twin 40L70 Compact naval mounting; Otobreda Twin Fast Forty naval mounting; Boeing Company Bushmaster IV. TRIDON 40 mm L/70 self-propelled air defence gun.