![]() ![]() ![]() ![]() The elevation is provided via a single hydraulic actuator located on the gun's centerline just forward of the pivot point. The mount on the AH-64 uses secondary hydraulics to move the gun. Spent casings are ejected overboard through the bottom of the gun. The gun has a positive cook-off safety for open bolt clearing, and double ram prevention. The practical rate of fire is about 300 rounds per minute with a 10-minute cooling period as the gun is air cooled. It uses a 2 hp (1.5 kW) electric motor to fire 30 mm (1.2 in) linkless ammunition at a rate of 625☒5 rounds per minute. The M230 Chain Gun is the "Area Weapon System" on the Boeing AH-64 Apache attack helicopter and is also used on the MH-60L Direct Action Penetrator (DAP). Design M789 HEDP 30 mm rounds being loaded into an AH-64D Longbow Apache in April 2007. The linked ammunition version was intended for use on the AH-1S Cobra as the M230E1, but was later dropped. In January 1975 a model "C" was added, a linkless version for the proposed Advanced Attack Helicopter YAH-64 the helicopter was eventually adopted as the AH-64 Apache, with the model C as standard armament. By April 1973, the program had fired test rounds in more powerful 30 mm WECOM linked ammunition, from a prototype (A model). In 1972, Hughes Helicopters began a company-funded research effort to design a single machine gun to fire the U.S. As of 2019, it is produced by Northrop Grumman Innovation Systems. In 2002, it was sold again to Alliant Techsystems, which merged with Orbital Sciences Corporation in 2015 to form Orbital ATK and was, in turn, bought out by Northrop Grumman in 2018. The company was acquired by McDonnell Douglas Helicopters in 1985, which merged into Boeing Corporation in 1997. It was designed and manufactured originally by Hughes Helicopters in Culver City, California. The M230 Cannon is a 30 mm (30×113 mm), single-barrel electrically-driven autocannon, using external electrical power (as opposed to recoil or expanding gas generated by the firing cartridge) to cycle the weapon between shots. M789 High Explosive Dual Purpose (HEDP). ![]()
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