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Navy ditches futuristic railgun, eyes hypersonic missiles It spent more than a decade developing the electromagnetic railgun and once considered putting them on the stealthy new Zumwalt-class destroyers built at Bath Iron Works. By DAVID SHARPAssociated Press Share Gary Bass, left, and Jim Poyner from the Naval Surface Warfare Center, Dahlgren Division, take measurements after a successful test firing of an electromagnetic railgun prototype launcher in Dahlgren, Va., in 2012. The U.S. Navy has pulled the plug, for now, on the futuristic weapon, which fires projectiles at up to seven times the speed of sound using electricity. U.S. Navy photo by John F. Williams via AP, file

Matthew carisLyndonb johnsonCourtney callaghanBryan clarkNorman friedmanOffice of naval researchUs navyHudson instituteBath iron worksAvascent groupDefense departmentBath ironNaval researchமேத்யூ கேரிஸ்கோர்ட்னி காலகன்பிரையன் கிளார்க்