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The General Electric GAU-8/A Avenger is a 30 mm hydraulically driven seven-barrel Gatling-style autocannon that is primarily mounted in the United States Air Force's Fairchild Republic A-10 Thunderbolt II. Designed to destroy a wide variety of ground targets, the Avenger delivers 30mm rounds at a high rate of fire.
During this time, a separate RFP was released for A-X's 30 mm cannon with requirements for a high rate of fire (4,000 rounds per minute) and a high muzzle velocity. [19] Six companies submitted aircraft proposals, with Northrop and Fairchild Republic in Germantown, Maryland , [ 20 ] selected to build prototypes: the YA-9A and YA-10A, respectively.
The 30 mm caliber is a range of autocannon ammunition. It includes the NATO standardized Swiss 30×173mm (STANAG 4624), the Soviet 30×155mmB, 30×165mm and 30×210mmB, the Czechoslovak 30×210mm, the Yugoslav 30×192mm, the British 30×113mmB, and the French 30×150mmB and 30×170mm cartridges.
The GAU-13/A is a four-barreled rotary cannon based on the mechanism of the larger GAU-8, sharing the same massive 30 mm ammunition. Like the Avenger, it has a double-ended feed system with reverse clearing to remove unfired rounds. Unlike the GAU-8, however, it is pneumatically driven, giving it a rate of fire of 2,400 rounds per minute.
Currently, HEI rounds are most commonly made in medium-caliber sizes of 20, 25, and 30 mm. They are fired from various platforms, including aircraft, anti-aircraft cannons , and anti-missile systems , as well as common battlefield howitzers , though the latter has gone through a recent decline in use.
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An enhanced fire control system improves long-range accuracy to kill targets with fewer bursts, sometimes as few as two or three rounds instead of 10. The XM813 30 mm cannon is intended to replace the M242 Bushmaster 25 mm chain gun, and can be mounted on vehicles other than the Bradley. Two capabilities not demonstrated were its linkless ...
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