Английская Википедия:Berezin B-20
Шаблон:More footnotes Шаблон:Infobox weapon
The Berezin B-20 (Березин Б-20) was a 20 mm caliber autocannon used by Soviet aircraft in World War II.
Development
The B-20 was created by Mikhail Yevgenyevich Berezin in 1944 by converting his 12.7 mm Berezin UB machine gun to use the 20 mm rounds used by the ShVAK cannon. No other changes were made to the weapon which was pneumatically or mechanically charged and was available in both synchronized and unsynchronized versions. In 1946, an electrically-fired version was created for the turrets of the Tupolev Tu-4 bomber until the Nudelman-Rikhter NR-23 cannon became available. The B-20 was a welcome replacement for the ShVAK because it was significantly lighter - 25 kg (55 lb) to the 40 kg (80 lb) ShVAK - without sacrificing rate of fire or muzzle velocity.
Specifications
- Ammunition: 20×99mm
- Empty weight: 25 kg (55 lb)
- Muzzle velocity: 750–770 m/s (2,460-2,525 ft/s)
- Rate of fire: 800 rounds/min
- Mass of one-second burst: 0.95 kg (2.1 lb)
Production
The Soviet archives register the following production numbers by year:[1]
- 1944 — 2,275
- 1945 — 7,240
- 1946 — 440
- 1947 — 780
- 1948 — 1,686
- 1949 — 2,931
See also
Related developments:
- Berezin UB machine gun
Similar weapons:
Notes
References
- Широкоград А.Б. (2001) История авиационного вооружения Харвест (Shirokograd A.B. (2001) Istorya aviatsionnogo vooruzhenia Harvest. Шаблон:ISBN) (History of aircraft armament)
- Шаблон:Cite book
Шаблон:Russian and Soviet Aircraft Ordnance
- ↑ Shirokograd, p 119
- Английская Википедия
- 20 mm artillery
- Autocannons of the Soviet Union
- Aircraft guns of the Soviet Union
- KBP Instrument Design Bureau products
- Weapons and ammunition introduced in 1944
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
