Rotary cannon

Multiple barreled automatic firearm

A rotary cannon, rotary autocannon, gatling cannon, gatling autocannon, or incorrectly a minigun, is any large-caliber multiple-barreled automatic firearm that uses a Gatling-type rotating barrel assembly to deliver a sustained saturational direct fire at much greater rates of fire than single-barreled autocannons of the same caliber. The loading, firing and ejection functions are performed simultaneously in different barrels as the whole assembly rotates, and the rotation also permits the barrels some time to cool. External and self-driven rotary cannons are used in aircraft over reciprocating bolt autocannons which are more prone to jamming in high g environments.

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