Guided .50 Caliber Projectile — DARPA’s Steerable Bullet

With the Fifty Caliber Shooting Association (FCSA) 2018 World Championships being in the news lately, we thought our readers might enjoy a report on some amazing 50-Caliber technology. For the past few years, the U.S. Defense Advanced Research Projects Agency (DARPA) has been developing a guided 50-Caliber projectile. No this is not an April Fools joke — this is for real boys and girls — DARPA has produced a guided bullet. Read on to learn how DARPA did it…

Imagine if you could “steer” your bullet to the target, after the projectile leaves the muzzle. That has been a dream of marksmen ever since the first rifle was invented. Well that dream is now one step closer to reality, thanks to DARPA.

DARPA has developed a manueverable .50-caliber rifle bullet. DARPA’s Extreme Accuracy Tasked Ordnance (EXACTO) program recently conducted the first successful live-fire tests demonstrating in-flight guidance of .50-caliber bullets. Inside EXACTO bullets are optical guidance systems, aero-actuation controls, and multiple sensors. The top-secret technology permits the trajectory of the bullet to be altered in flight, allowing the bullet to move left or right, or even fly in an arc around an obstacle.

A few years back, DARPA released a video showing EXACTO 50-caliber bullets in flight. Watch carefully and you will see the tracked trajectory appear to bend off in one direction in the last segment of the bullet’s flight. Here is the DARPA Video:

According to DARPA: “This video shows EXACTO rounds maneuvering in flight to hit targets that are offset from where the sniper rifle is initially aimed. EXACTO’s specially-designed ammunition and real-time optical guidance system help track and direct projectiles to their targets by compensating for weather, wind, target movement, and other factors that could impede successful aim.”

DARPA states: “For military snipers, acquiring moving targets in unfavorable conditions, such as high winds and dusty terrain commonly found in Afghanistan, is extremely challenging with current technology. It is critical that snipers be able to engage targets faster, and with better accuracy, since any shot that doesn’t hit a target also risks the safety of troops by indicating their presence and potentially exposing their location.”

The Extreme Accuracy Tasked Ordnance (EXACTO) system seeks to improve sniper effectiveness and enhance troop safety by allowing greater shooter standoff range and reduction in target engagement timelines. The objective of the EXACTO program is to revolutionize rifle accuracy and range by developing the first ever guided small-caliber bullet. The EXACTO 50-caliber round and optical sighting technology expects to greatly extend the day and nighttime range over current state-of-the-art sniper systems. The system combines a maneuverable bullet and a real-time guidance system to track and deliver the projectile to the target, allowing the bullet to change path during flight to compensate for any unexpected factors that may drive it off course. Technology development in Phase II included the design, integration and demonstration of aero-actuation controls, power sources, optical guidance systems, and sensors. The program’s next phase includes a system-level live-fire test and technology refinement[.]

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