Nudelman-Suranov NS-37

"NS-37" redirects here. For other uses, see NS37 (disambiguation).
Nudelman—Suranov NS-37
Il-2 with NS-37 cannon in under-wing pods
TypeAutocannon
Place of originSoviet Union
Service history
In service1943–1945
Used bySoviet Union
WarsWorld War II
Production history
DesignerA. E. Nudelman and A. Suranov
Designed1941
ManufacturerIzhmash
Produced1942–1945
No. built6833
Specifications
Mass170/160 kg (with motor/wing mount)
Length3.41 m
Barrel length2.3 m
Width21.5 cm
Height41.5 cm
Cartridge37×198 mm
Barrels1
Actionshort recoil
Rate of fire240–260 rpm
Muzzle velocity900 m/s (HE, HEI-T), 880 m/s (AP-T)
Feed systemBelt

The Nudelman-Suranov NS-37 (Russian: Нудельман - Суранов НС-37) was a 37-millimetre (1.5 in) aircraft cannon, which replaced the unreliable Shpitalny Sh-37 gun. Large caliber was planned to allow destruction of both ground targets (including armoured ones) and planes (ability to shoot down a bomber with a single hit).

Developed by A. E. Nudelman and A. Suranov from OKB-16 Construction Bureau from 1941, it was tested at the front in 1943 and subsequently ordered into production, which lasted until 1945. It was used on the LaGG-3 and Yak-9T fighter planes (mounted between the vee of the engine, in motornaya pushka mounts) and Il-2 ground attack planes (in underwing pods).

Although the heavy round offered large firepower, the relatively low rate of fire and heavy recoil made hitting targets difficult. While pilots were trained to fire short bursts, on light aircraft only the first shot was truly aimed. Additionally, penetration of medium and heavy tanks' top armour was possible only at high angles (above 40 degrees), which was hard to achieve in battle conditions. For these reasons it was soon replaced in 1946 by the N-37 autocannon, which used a lighter 37×155 mm round.

See also

Weapons of comparable role, performance and era

References

  • Koll, Christian (2009). Soviet Cannon - A Comprehensive Study of Soviet Arms and Ammunition in Calibres 12.7mm to 57mm. Austria: Koll. p. 355. ISBN 978-3-200-01445-9. Archived from the original on 2009-10-19. Retrieved 2009-10-05.
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