57 MM Artillery - Zsu-57-2, Ordnance Qf 6 Pounder, 57 MM Anti-Tank Gun M1943, 57 MM Azp S-60, Qf 6 Pounder Hotchkiss, Bofors 57 MM Gun, 57 55 J (Paperback)

Chapters: Zsu-57-2, Ordnance Qf 6 Pounder, 57 Mm Anti-Tank Gun M1943, 57 Mm Azp S-60, Qf 6 Pounder Hotchkiss, Bofors 57 Mm Gun, 57 55 J, Qf 6 Pounder Nordenfelt, Qf 6 Pounder 6 Cwt Hotchkiss, Asu-57, 57 Mk3, Zis-30, Ak-257, Mk 110 57 Mm Gun, 57mm/60 Modele 1951 Gun, Type 97 57 Mm Tank Gun, Ho-401 Cannon. Source: Wikipedia. Pages: 89. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The ZSU-57-2 (Ob'yekt 500) is a Soviet self-propelled anti-aircraft gun (SPAAG), armed with two 57 mm autocannons. 'ZSU' stands for Zenitnaya Samokhodnaya Ustanovka (Russian: ), meaning "anti-aircraft self-propelled mount," '57' stands for the bore of the armament in millimetres and '2' stands for the number of gun barrels. It was the first Soviet mass produced tracked SPAAG. In the USSR it had the unofficial nickname "Sparka," meaning "pair," referring to the twin autocannon with which the vehicle is armed. During World War II, ground-attack aircraft emerged as a significant threat to mechanized units on the move. Conventional towed anti-aircraft (AA) artillery was an inadequate response under such conditions due to the time needed for bringing anti-aircraft machine guns into action. This experience made it clear that an anti-aircraft tracked vehicle, armed with small-bore autocannons or heavy machine guns, was needed. Vehicles such as the German Wirbelwind had been used to good effect in the final battles of World War II. In 1942, Soviet engineers developed the T-60-3. The vehicle, based on the T-60 light tank chassis, was armed with two 12.7 mm DShK heavy machine guns; but the prototype did not go into production because of flaws in the design. The SU-72 SPAAG and several other experimental vehicles based on the T-60 or T-70 light tank chassis and armed with 37 mm autocannon were also tested in 1942-1943. The...More: http: //booksllc.net/?id=153280