The U.A. Army Wants Bullets And Mortars That Can Hit A Moving Target

This graphic reveals how Exacto bullet-style tech can track target and change direction. The sniper additionally has to take into account wind, distance and the curvature of the Earth, before pulling the trigger

Michael Peck, National Interest: The U.S. Army Wants 'Bullets' That Can Chase a Tank or a Fighter Jet

The U.S. Army wants bullets and mortar shells that do more than hit a target. It wants projectiles that can hit a moving tank or even an aircraft in flight.

It's a worthy idea, except there is a problem. Building small projectiles with actuators—the mechanical parts and control surfaces that would adjust the projectile's trajectory—that can survive being shot out of a gun is a challenge.

It's not that guided projectiles don't exist. The problem is that they're only for artillery. About a decade ago came guided shells like the U.S. Army's M982 Excalibur, configured with fins and GPS guidance to adjust its trajectory in flight, reliably land much closer to the target than regular projectiles. But even these shells, shot indirectly from miles away, are really suited to hit stationary targets. Regular artillery shells have an accuracy of landing about 650 feet from the target, according to the army. The M1156 guidance kit, which can be fitted to turn regular shells into smart shells, has an accuracy of 165 feet, while even an Excalibur shell still has an accuracy of sixty-five feet from the target.

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WNE Editor: When and if such a bullet is developed, I suspect that this is going to be one hell of an expensive bullet. There is some information on the development of such a bullet here .... Watch the U.S. Army test self guided 'smart bullets' that let ANYONE hit a moving target with perfect accuracy (Daily Mail).