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23mm Gryazev-Shipunov GSh-23



Overview


GSh-23

Forward view of GSh-23.
Source: www.artofwar.ru - © copyright lies with original owner

Origin
Soviet Union
Type
Autocannon
Entered service
1965
Status
In service
Development
Early 1960's
Developer
Soviet Union - KBP Instrument Design Bureau
Production
1965 - present
Producer
Soviet Union - ZID
Russia - ZID
Indonesia - OFB
Romania - Cugir arsenal
Number produced
Several thousand
Designations
GȘ-23 (Romanian production)
9-A-472 (GRAU index)
TKB-613

Description


Introduction

The GSh-23 is an autocannon of Soviet origin. It was designed in the early 1960's as a replacement for the older NR-23. The GSh-23 has a much higher rate of fire. This is a virtue in jet aircraft since time on target is lower, but comes at the cost of recoil and running out of ammunition quickly.

Design

The GSh-23 functions on the Gast principle. In this twin barrel setup the recoil from one barrel cycles the action of the other, allowing for an instant high rate of fire. The GSh-23 is belt fed from a single belt. The GSh-23L adds a muzzle brake that helps reduce recoil. Both GSh-23 and GSh-23L are solenoid fired.

Firepower

The GSh-23 fires the 23x115mm round that is also widely used in other Soviet aircraft cannon. The rate of fire is 3.000 to 3.400 rpm and is instantly achieved as opposed to Gatling type weapons. The muzzle velocity of 715 m/s is low compared to other modern aircraft cannon.

Platforms

The GSh-23 was introduced on the MiG-21. First in the GP-9 pod and later in semi-recessed form. It is also used on many versions of the MiG-23 and foreign aircraft such as the J-22 Orao, IAR-93 Vultur and Tejas. The GSh-23 arms the UPK-23 and SPPU-22 gun pod. Additionally the GSh-23 is used as a tail gun in Tu-22M and Tu-95 bombers and Il-76M transport aircraft.

Variants


Variants of the GSh-23 autocannon

GSh-23

Original production model without muzzle brake. Produced in smaller numbers than GSh-23L

GSh-23L

GSh-23 with multi-slotted muzzle brake which reduces recoil.

Details


Facts GSh-23 GSh-23L
General
Origin
Soviet Union
Type
Autocannon
Caliber
Caliber
23x115mm AM-23
Feed system
Single belt feed
Barrel length
1.00 m, twin barrel
Rifling
10 grooves, 575 mm right hand twist
Muzzle velocity
700 - 730 m/s
Operation
Action
Gas operated, Gast principle
Rate of fire
3.000 - 3.400 rpm
Dimensions
Weight
49.2 kg
Length
1.387 m
Width
165 mm
Height
168 mm

Media


Related articles


UPK-23

The UPK-23 gun pod is fitted with the GSh-23L autocannon. Is it used on combat helicopters and ground attack aircraft.

SPPU-22

The SPPU-22 gun pod is fitted with a single GSh-23L autocannon. A unique feature of the SPPU-22 is that the armament can be lowered up to 30 degrees downwards.