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M712 Copperhead
The M712 Copperhead is a 155 mm caliber cannon-launched, fin-stabilized, terminally laser guided, explosive shell intended to engage hard point targets such as tanks, self-propelled howitzers or other high-value targets. It may be fired from different artillery pieces, such as the M114, M109, M198 and M777 howitzers. The projectile has a minimum range of 3 km and a maximum range of 16 km.
== Description ==
At and long, Copperhead is longer and heavier than traditional 155mm ammunition.〔http://www.ausairpower.net/SP/DT-SPH-0705.pdf〕
The warhead assembly consist of a shaped charge loaded with of Composition B.
For Copperhead to function, the target must be illuminated with a laser designator. Once the laser signal is detected, the on-board guidance system will operate the steering vanes to maneuver the projectile to the target. The Copperhead targeting logic is designed to (1) ensure that the optical system will always be able to detect the target, and (2) that once the target has been detected there will be sufficient time and velocity to maneuver to hit the target. Copperhead must be below any cloud cover at critical parts of the trajectory, and there must be sufficient visibility to ensure that when the target is acquired the projectile will have sufficient time to maneuver.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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