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Shell 105 mm FD Smoke BE L45A2 (fuzed)
Регіон
India
Категорія
Боєприпаси, ракети та високоточне озброєння
The Shell 105 mm FD Smoke BE L45A2 (fuzed) is the 105 mm L45A2 BE Smoke is ballistically matched to the 105 mm L31 series of HE projectiles and has an identical external profile. The internal diameter of the 105 mm L45A2 BE Smoke is enlarged at the rear of the body to avert compression from the single copper driving band acting on the smoke container. Internally, the forward end of the shell is formed with a fuze cavity connected to a flash channel where the burster charge (28.35 g of gunpowder G12) is located.
Inside the shell are three smoke canisters retained in position by a steel baseplate and a PVC locking ring which is screwed home against the baseplate. Washers are used as adjustable packing between the baseplate and the rear smoke canister. Each canister is filled with approximately 848 g of Composition SR 252, which acts as an igniter, and PN 800 smoke agent. In use the fuze functions at the selected time and the resultant flash ignites the burster charge. The burster charge sets up a pressure behind a baffle plate which then allows a small flash to pass down a perforated central channel to ignite all three smoke canisters. The pressure from the baffle plate also forces the PVC ring securing the baseplate to break the baseplate and canisters to be ejected, usually at an altitude over the target area of 200 m. The smoke canisters form a dense cloud of smoke for approximately 60 seconds. The smoke build-up is slower than White Phosphorus (WP) but the smoke cloud follows ground contours more closely and is more persistent. The Charge system is assembled in brass cartridge cases, Normal (L35A1/A2) having five increments and Super (L36A2/A3), a unitary charge. Ignition is by an electric primer ( L10A1 ) fitted in the cartridge base. Range performance is as follows: Charge 1 (L35A1/A2) - 2,500 to 5,700 m Charge 2 (L35A1/A2) - 2,700 to 7,200 m Charge 3 (L35A1/A2) - 5,900 to 9,500 m Charge 4 (L35A1/A2) - 7,900 to 12,200 m Charge 5 (L35A1/A2) - 15,300 m Super Charge (L36A2/A3) - 17,200 m. Minimum ranges with Charge 1 and 2 require L1A1 spoiler rings to be fitted to the nose of the shell. Also available is the Cartridge 105 mm FD Training L45A1. See separate entry for details.