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Often propane bombs are crudely made, involving wiring a device into the propane tank(s) set to a timer or remote detonation. The expanding gas of the ignited propane bursts the shell of the tank and causes the explosion, similar to the fundamentals of a pressure cooker bomb or a pipe bomb.
The "canon obusier de 12 livres" is commonly described as a "12-pounder" in English, although the nominal rating was based on a slightly different measure - the bore is the size of a solid cast-iron ball weighing 12 livres (old French pounds, about 1.079 English pounds.) As with other cannon rated by nominal weight, the projectile actually used ...
In World War I, aircraft were initially intended for aerial reconnaissance, however some pilots began to carry rifles in case they spotted enemy planes.Soon, planes were fitted with machine guns with a variety of mountings; initially the only guns were carried in the rear cockpit supplying defensive fire (this was employed by two-seat aircraft all through the war).
The GAU-12 is about the same size as the 20 mm M61. GE has also developed the GAU-13/A , a four-barreled weapon using GAU-8/A components, which has been tested in podded form as the GPU-5/A . The Avenger also forms the basis for the Dutch-developed Goalkeeper CIWS naval air-defense gun.
12-pounder gun or 12-pdr, usually denotes a gun which fired a projectile of approximately 12 pounds. Guns of this type include: 12-pounder long gun, the naval muzzle-loader of the Age of Sail; Canon de 12 de Vallière, French cannon of 1732; Canon de 12 Gribeauval, French field cannon of the mid-late 18th century
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Type 730C is a new variant unveiled in February 2017 that combines the existing Type 730 seven-barrelled 30 mm rotary cannon with 6x FL-3000N missiles. The system comes with LR66 tracking radar and OC8 electro-optical tracker, though not fitted on the CIWS probably due to weight and electromagnetic interference issues, to track two separate ...
The cannon is a single-barrel, high-performance, breech-cylinder gun operated by a fully automatic, electrically fired, gas-operated system at a selective rate of 1000 or 1700 rounds per minute(+/− 100 rpm). [2] The Mauser BK 27 utilizes pyrotechnic cocking charges to cycle the action.