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Gryazev-Shipunov GSh-6-23M
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GSh-6-23M, Firing
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Other Pictures:
GSh-6-23M
GSh-6-23M, Notice The Chamber End Squared Off. Also With A Vented Directional Muzzle "Brake" That Is More Of A Muzzle Accelerator With The Directional Vents Installed
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The GSh-6-23 differs from most American multi-barreled aircraft cannon in that it is gas-operated, rather than externally powered via an electric, hydraulic, or pneumatic system. Although the engineering difficulties involved in producing a gas-operated rotary cannon with such a high rate of fire are considerable, they create less of a drain on the aircraft`s power systems, and they accelerate to their maximum rate of fire much more quickly. There is less "spin-up" time for the barrels than with an externally powered rotary cannon, a significant advantage in aerial combat, where the window of opportunity to place multiple rounds on target can be vanishingly short.
The GSh-6-23M uses the 23x115 Russian AM-23 round, fed via linked cartridge belt or a linkless feed system. Fire control is electrical, using a 27v DC system. The cannon has 10 pyrotechnic cocking charges, similar to those used in European gas-operated revolver cannon such as the DEFA 554 or Mauser BK-27.
The GSh-6-23 has an extremely high rate of fire, with maximum cyclic rates of 9,000 to 10,000 rounds per minute. This is fully a third greater than the American M61 Vulcan, and the GSh-6-23 fires a substantially harder-hitting projectile, although its muzzle velocity is comparably reduced. A tactical limitation of the GSh-6-23`s rate of fire is that maximum burst length is extremely limited. The MiG-31, for example, with only 260 rounds of ammunition, would exhaust its entire magazine in less than three seconds.
The GSh-6-23 is used by the Sukhoi Su-24 `Fencer` attack aircraft, the MiG-31 `Foxhound` interceptor, and in the SPPU-6 gun pod with traversable barrels (the weapon can be traversed 45° downwards, to the left and the right).
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Weapontype:
six-barrel rotary cannon
Operation:
gas-operated, electrically fired
Cartridge:
23x115 mm (0.90 in)
Weight:
(complete): 73-76 kg (161-167 lb)
Length:
1.4 m (4 ft 7 in)
Rate of fire:
9,000 - 10,000 RPM
Muzzle Velocity:
715 m/s (2,345 ft/s)
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