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81 mm WP smoke bomb, M375A3
Регіон
United States
Категорія
Боєприпаси, ракети та високоточне озброєння
Armament 81 mm mortars of all types Development By US Army Ordnance to satisfy a military requirement for a white phosphorus smoke round. It is no longer in production in the US, but remains in US Army stockpiles as the standard pyrophoric round. For smoke/obscurant missions the M819 RP round (qv) is used. Description The complete round consists of a steel projectile body, externally threaded at the base to accept the tail boom and fin assembly and internally threaded at the nose to accept the fuze, which may be
either impact or proximity. The fin assembly incorporates a cartridge housing/tail boom that is surrounded by four horseshoe shaped increment charges. These each contain M10 propellant. A plastic propelling charge support surrounds the increments. The burster consists of a casing that contains a small charge of RDX. The projectile body is filled with white phosphorus. The fins are canted at 5º to spin stabilise the round in flight, enhancing its accuracy. The M275A3 round cannot be fired at greater than Charge 2 in M-1 (low pressure- type) mortars. Manufacturer US Army contractors.