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Anti-aircraft gun From Wikipedia, the free encyclopedia
The Cannone da 75/27 A.V. was an anti-aircraft gun developed in Italy during the First World War that also saw service during the Second World War.
Cannone da 75/27 A.V. | |
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![]() A Battery of 75/27 A.V. at the test range in Nettuno. | |
Type | Anti-aircraft gun |
Place of origin | Italy |
Service history | |
In service | 1917–1943 |
Used by | Italy Nazi Germany |
Wars | World War I World War II |
Production history | |
Designed | 1916 |
Manufacturer | Ansaldo |
Variants | Autocannone da 75/27 C.K. |
Specifications | |
Mass | 1.9 t (1.9 long tons; 2.1 short tons) |
Barrel length | 2.025 m (6 ft 8 in) L/27 |
Shell | Fixed QF 75 x 185mm R[1] |
Shell weight | 6.5 kg (14 lb 5 oz) |
Caliber | 75 mm (3 in) |
Action | Semi-automatic |
Breech | Horizontal sliding-wedge |
Recoil | Hydro-spring |
Elevation | –5° to +80° |
Traverse | 360° |
Rate of fire | 15 RPM |
Muzzle velocity | 510 m/s (1,700 ft/s) |
Effective firing range | 5,500 m (18,000 ft) |
Maximum firing range | 6,000 m (20,000 ft)[2] |
The 75/27 A.V. (Anti Velivolo, Anti-Aircraft) cannon was privately developed by Ansaldo to supply an anti-aircraft gun to the Regia Esercito.
The 75/27 A.V. used the barrel and hydro-spring recoil mechanism from the Cannone da 75/27 modello 06 a license-built version of the Krupp Kanone M 1906 field gun to speed up production and it used the same Fixed QF 75 x 185mm R ammunition. The barrel consisted of a rifled liner with 28 left-handed grooves, and an external jacket, it was 2.025 m (6 ft 8 in) L/27 long and weighed 346 kg (763 lb) including the semi-automatic horizontal sliding-wedge breech. The breech closed automatically when a projectile was fed into the chamber and after firing the shell casing was ejected and the breech was held open for the next round.[2]
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