Extended Range Guided Munition

（重定向自ERGM）

The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127 mm) Shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 million dollars in funding. The developmental round was designated EX 171. ERGM consisted of three major subsections; propulsion (rocket motor), warhead, and Guidance, Navigation and Control section. ERGM is fired from the 5 inch 62 Caliber Mark 45 gun Mod 4 at which point the fins deploy, rocket motor would ignite and lift the munition to at least 80,000 feet (24 km) when the canards would deploy and guide the ERGM to the target based on GPS guidance. It was to be used on Arleigh Burke class destroyers (hulls DDG-51 through 112).

单词	ERGM
释义	ERGM 英语百科 Extended Range Guided Munition （重定向自ERGM） The Extended Range Guided Munition was a precision guided rocket-assisted 5-inch (127 mm) Shell (projectile) development by Raytheon for the U.S. Navy. The program was cancelled in March 2008 after twelve years of development and over 600 million dollars in funding. The developmental round was designated EX 171. ERGM consisted of three major subsections; propulsion (rocket motor), warhead, and Guidance, Navigation and Control section. ERGM is fired from the 5 inch 62 Caliber Mark 45 gun Mod 4 at which point the fins deploy, rocket motor would ignite and lift the munition to at least 80,000 feet (24 km) when the canards would deploy and guide the ERGM to the target based on GPS guidance. It was to be used on Arleigh Burke class destroyers (hulls DDG-51 through 112).
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