Nudelman N-37D on:
[Wikipedia]
[Google]
[Amazon]
The Nudelman N-37 was a 37 mm (1.46 in)
;N-37
:Basic version without muzzle brake
;N-37D
:N-37 with muzzle brake
;N-37L
:N-37 with 1950mm long barrel (had no muzzle brake)
;NN-37
:Improved N-37L developed during the late 1950s for the Yak-27 reconnaissance aircraft. The NN-37 differed from the N-37L in having a pneumatic counter-recoil accelerator, therefore achieving a rate of fire of 600–700rpm. The ammunition feed mechanism was redesigned as well on this version.
;Type 37 aircraft cannon
:Chinese licensed / copy production
aircraft
An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engine ...
autocannon used by the Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
. It was designed during World War II by V. Ya. Nemenov of A.E. Nudelman's OKB
OKB is a transliteration of the Russian initials of "" – , meaning 'experiment and design bureau'. During the Soviet era, OKBs were closed institutions working on design and prototyping of advanced technology, usually for military applications. ...
-16 to replace the earlier Nudelman-Suranov NS-37
The Nudelman-Suranov NS-37 (russian: Нудельман - Суранов НС-37) was a aircraft cannon, which replaced the unreliable Shpitalny Sh-37 gun. Large caliber was planned to allow destruction of both ground targets (including armoured ...
and entered service in 1946. It was 30% lighter than its predecessor at the cost of a 23% lower muzzle velocity.
The N-37 was a sizable weapon firing a massive (735 g/26 oz HEI-T, 760 g/27 oz AP-T) shell. Its muzzle velocity was still considerable, but its rate of fire was only 400 rounds per minute. The weapon's considerable recoil
Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, as according to Newton's third law the force r ...
and waste gases were problematic for turbojet
The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, an ...
fighter aircraft, as was finding space for the gun and a useful amount of ammunition, but a single shell was often sufficient to destroy a bomber
A bomber is a military combat aircraft designed to attack ground and naval targets by dropping air-to-ground weaponry (such as bombs), launching torpedoes, or deploying air-launched cruise missiles. The first use of bombs dropped from an air ...
.
The N-37 was used in the MiG-9
The Mikoyan-Gurevich MiG-9 (russian: Микоян и Гуревич МиГ-9, USAF/DoD designation: Type 1, NATO reporting name: Fargo) was the first turbojet fighter developed by Mikoyan-Gurevich in the years immediately after World War II. ...
, MiG-15
The Mikoyan-Gurevich MiG-15 (russian: Микоя́н и Гуре́вич МиГ-15; USAF/DoD designation: Type 14; NATO reporting name: Fagot) is a jet fighter aircraft developed by Mikoyan-Gurevich for the Soviet Union. The MiG-15 was one of ...
, MiG-17
The Mikoyan-Gurevich MiG-17 (russian: Микоян и Гуревич МиГ-17; NATO reporting name: Fresco) is a high-subsonic fighter aircraft produced in the Soviet Union from 1952 and was operated by air forces internationally. The MiG-17 w ...
, and early MiG-19
The Mikoyan-Gurevich MiG-19 (russian: Микоян и Гуревич МиГ-19; NATO reporting name: Farmer) is a Soviet second generation, single-seat, twinjet fighter aircraft, the world's first mass-produced supersonic aircraft. It was the ...
fighters, the Yakovlev Yak-25
The Yakovlev Yak-25 ( NATO designation Flashlight-A/Mandrake) was a swept wing, turbojet-powered interceptor and reconnaissance aircraft built by Yakovlev and used by the Soviet Union.
Design and development
The Yak-25 originated from a need ...
, and others. Production lasted through the late 1950s, although it remained in service for many years afterwards.
Variants
;N-37
:Basic version without muzzle brake
;N-37D
:N-37 with muzzle brake
;N-37L
:N-37 with 1950mm long barrel (had no muzzle brake)
;NN-37
:Improved N-37L developed during the late 1950s for the Yak-27 reconnaissance aircraft. The NN-37 differed from the N-37L in having a pneumatic counter-recoil accelerator, therefore achieving a rate of fire of 600–700rpm. The ammunition feed mechanism was redesigned as well on this version.
;Type 37 aircraft cannon
:Chinese licensed / copy production
Production
The Soviet archives detail the following production numbers by year:Shirokograd, p. 129; no number given for 1955 * 1947 — 518 * 1948 — 508 * 1949 — 1,314 * 1950 — 3,043 * 1951 — 3,885 * 1952 — 4,433 * 1953 — 4,600 * 1954 — 1,700 * 1956 — 285Comparable Weapons
*M4 cannon
The 37 mm Automatic Gun, M4, known as the T9 during development, was a 37 mm (1.46 in) recoil-operated autocannon designed by Browning Arms Company. The weapon, which was built by Colt, entered service in 1942. It was primarily m ...
See also
*List of Russian weaponry
The following is a list of modern Russian small arms and light weapons which were in service in 2016:
Handguns
Revolvers
Pistols
Special purpose
Submachine guns
Special purpose
Shotguns
Rifles
Bolt-action
Semi-a ...
References
Bibliography
* * Широкорад А.Б. (2001) ''История авиационного вооружения'' Харвест (Shirokorad A.B. (2001) ''Istorya aviatsionnogo vooruzhenia'' Harvest. ) (''History of aircraft armament'')External links
{{Russian and Soviet Aircraft Ordnance 37 mm artillery Autocannons of the Soviet Union Aircraft guns of the Soviet Union KB Tochmash products Weapons and ammunition introduced in 1946