- ShVAK cannon
The ShVAK ( _ru. ШВАК: Шпитальный-Владимиров Авиационный Крупнокалиберный, "Shpitalnyi-Vladimirov Aviatsionnyi Krupnokalibernyi", "Shpitalny-Vladimirov large-calibre for aircraft") was a 20 mm
autocannon used by theSoviet Union duringWorld War II . It was designed byBoris Shpitalniy andSemyon Vladimirov and entered production in 1936. ShVAK was installed in manySoviet aircraft includingYakovlev Yak-1 ,Polikarpov I-153 and I-16,Lavochkin La-5 and La-7, LaGG-3, earlyIlyushin Il-2 , and Soviet-modifiedHawker Hurricane aircraft as well as T-38 andT-60 tanks.The TNSh was a version of this gun for tanks ( _ru. ТНШ: "Tankovyi Nudel’man-Shpitalnyi").
Description
The ShVAK 20 mm
autocannon is a large-caliber version of the 12.7 mmShKAS machine gun . The machine gun entered production in 1934 but proved unreliable, difficult to manufacture, and prone to jamming which often required partial or complete disassembly of the weapon. Its production was stopped in 1936. Theautocannon version differed only in larger caliber of the barrel. It is agas-operated belt-fed weapon with either cable or pneumatic charging in remote applications. ShVAK ammunition consisted of a mix of fragmentation-incendiary andarmor piercing -incendiary rounds. The damaging effect of this ammunition was considered weak for the caliber. As the result, towards the end ofGreat Patriotic War ShVAK was supplanted by theBerezin B-20 ,Volkov-Yartsev VYa-23 , andNudelman-Suranov NS-37 autocannon s.Specifications
*
Caliber : 20 mm
* Cartridge: 20×99R
*Rate of fire : 700–800 rounds/min
*Muzzle velocity : 750–790 m/s (2,460-2,592 ft/s)
* Weight: 88 lb (40 kg) without ammunition for the wing version
* Length: 66.1 in (1679 mm) for the wing versionAmmunition specifications
See also
*
List of firearms
*List of common WW2 weaponsReferences
* Широкорад А.Б. (2001) "История авиационного вооружения" Харвест (Shirokorad A.B. (2001) "Istorya aviatsionnogo vooruzhenia" Harvest. ISBN 985-433-695-6) ("History of aircraft armament")
External links
* [http://battlefield.ru/index.php?option=com_content&task=view&id=104&Itemid=49&lang=en 20mm TNSh Tank Gun] at battlefield.ru
* [http://www.geocities.com/russianammo/ THE RUSSIAN AMMUNITION PAGE]
Wikimedia Foundation. 2010.