The Army is developing a new 155 mm artillery round that will extend cannon range to more than 24 miles (40km), with the added benefits of greater safety for service members and the ability to deliver near-precision strike capability. The XM1113 Insensitive Munition High Explosive Rocket Assisted Projectile, or XM1113 RAP, will replace the aging M549A1 rounds produced in the 1970s and 1980s and help U.S. Soldiers and Marines maintain battlefield overmatch.
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The XM1113 consists of a high fragmentation steel body with a streamlined ogive, the curved portion of a projectile between the fuze well and the bourrelet, and a high performance rocket motor. The projectile body is filled with insensitive munition high explosive and a supplementary charge. On gun launch, propellant gases initiate a delay device that will ignite the rocket motor, boosting velocity at an optimal time in the trajectory to maximize range (Photo Ardec). |