ShVAK (20 mm)

Description

The ShVAK (Russian: ШВАК: Шпитальный-Владимиров Авиационный Крупнокалиберный, Shpitalnyi-Vladimirov Aviatsionnyi Krupnokalibernyi, Shpitalny-Vladimirov large-calibre for aircraft) is a 20 mm autocannon which could be mounted on aircraft, either in the wings, the fuselage or in turrets. There are 3 variants of the ShVAK, 'standard' ShVAK, 'early' ShVAK (which lacks API and FI bullets), and the ShVAKs which is a standard Shvak synchronized and regulated to fire through a propeller arc without destroying the propeller. The synchronized ShVAK has a lower rate of fire compared to the other versions.

The turreted ShVAK has the same characteristics as the standard wing or fuselage mounted ShVAK cannons.

Vehicles equipped with 'early' ShVAK

• I-153P
• I-16 type 27
• I-16 type 28

Vehicles equipped with ShVAKs

Vehicles equipped with this weapon
I-185	I-185 (M-71) · I-185 (M-82)
La-5	La-5 · La-5F · La-5FN · ▀La-5FN
La-7	La-7 · Dolgushin's La-7
Other	I-225 · MiG-3-34

General info

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Available shells

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Comparison with analogues

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Usage in battles

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Pros and cons

Pros:

• Decent fire rate at 720 RPM
• Good accuracy even during prolonged bursts

Cons:

• Poor explosive effect compared to 20 mm shells of other nations
• Struggles against large framed and heavily armoured aircraft
• Slow muzzle velocity
• Useless at defeating armour

History

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Media

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See also

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External links

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USSR naval cannons
20 mm	ShVAK
25 mm	2M-3
30 mm	AK-230 · 30 mm/54 AK-630 · BP "Plamya"
37 mm	37 mm/67 70-K · V-11
45 mm	45 mm/46 21-K · 45 mm/68 21-KM · 45 mm/89 SM-20-ZIF · 45 mm/89 SM-21-ZIF
57 mm	AK-725
75 mm	75 mm/50 Canet patt.1892
76 mm	34-K · 39-K · 76 mm/60 AK-176M · AK-726 · D-56TS · F-34 · Lender AA gun, pattern 1914/15
85 mm	85 mm/52 92-K · 85 mm/54.6 ZIS-C-53 · 90-K
100 mm	100 mm/56 B-34 · 100 mm/70 SM-5-1 · Minizini
102 mm	Pattern 1911
120 mm	120 mm/50 pattern 1905
130 mm	130 mm/55 pattern 1913 · 130 mm/58 SM-2-1 · B-13
152 mm	152 mm/57 B-38
180 mm	180 mm/57 B-1-P · 180 mm/60 B-1-K
305 mm	12-inch/52 pattern 1907 · 305 mm/54 B-50
	Foreign:
40 mm	2pdr QF Mk.IIc (Britain) · Skoda (Czechoslovakia)
47 mm	3 pdr QF Hotchkiss (Britain)
76 mm	76 mm/40 Ansaldo mod.1917 (Italy)
88 mm	SK C/30 (Germany)
120 mm	120 mm/50 Mk.4 Bofors M1924 (Sweden) · 120 mm/50 O.T.O. Mod.1933 (Italy)
152 mm	152/53 mm O.T.O. Mod.1929 (Italy)
320 mm	320 mm/44 Ansaldo model 1934 (Italy)