CZK - vz. 12/20 (9 cm kanón proti letadlům)

Cannon against aircraft vz.12/20 caliber 9 cm

Weapon system Skoda with a horizontal wedge in conclusion, modofikace of the original ship's cannon against the aircraft vz. 12 caliber 9 cm, produced by the Škoda works in Pilsen.
The cannon was made up of the principal, the cradle and carriage. Steel barrel jacketed construction with a horizontal wedge in conclusion, was laid on the cradle with liquid brake, two vzpruhové vratníky were located above the main. The cradle was fastened to a post with miřidly, balancing and seats of the operator, while the gun carriage was sunk into the concrete of the platform stationary the firing station.
For these needs, it was in the years 1920 to 1922 a joint-Stock company, formerly the Škoda works in Pluni adapted a total of 20 guns, which were in the arsenal of stationary anti-aircraft batteries in the fall of 1938.


Tactical-technical data
the weight of the fighting – 6 500 kg, caliber – 90 mm, barrel length – 4,05 m (45 caliber), elevation – -5° to +90°, measured quantity – 360°, the weight of the hub – a 10.2 kg, muzzle velocity – 730 m/s, maximum remote range – 12 500 m, the maximum altitude range – 6 000 m rate of fire – up to 10 rounds per minute, the operation – 7 persons.

Literature:
Fidler, George - Woodcock, Václav: the Encyclopedia of military power of czechoslovakia 1920-1938. Prague, Libri 2006..
URL : https://www.valka.cz/CZK-vz-12-20-9-cm-kanon-proti-letadlum-t44725#175428 Version : 0
Barrel weight - 1174 kg,
Weight of the breech - 49 kg,
Firing height - 1300 mm,
Armed Anti-Aircraft Regiment 151 in 1921


Source:
ATM 06/2008, pp. 73-74
URL : https://www.valka.cz/CZK-vz-12-20-9-cm-kanon-proti-letadlum-t44725#259852 Version : 0
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