Video Above: Army 2-Star Describes Range Doubling, Course Correcting Artillery
For years, enemy armored vehicles, troop formations and weapons systems have been deliberately hiding under bridges, behind buildings or even on the other side of mountains, ridges and uneven terrain … for the specific purpose of eluding US Army precision guided weapons such as GPS-guided Excalibur 155 artillery rounds.
Successful in war for many years now, going back to Iraq in 2007, Excalibur has been used to pinpoint enemy target to within one-meter of accuracy from 30km away, something which changed the paradigm for ground warfare years ago.
Enemies have now learned of this capability and taken decided measures to counter precision strikes. Hiding in defilade or areas obscured by terrain can make it extremely difficult for Excalibur to attack and destroy certain enemy targets, as the GPS-guided rounds typically follow a specific “parabola-like” trajectory and descend upon fixed, identified targets.
Now, the Army is changing this in an accelerated fashion through the development of a new, cutting edge 155mm artillery round called the “shaped trajectory,” a projectile capable of adjusting course in flight and changing directions as needed to destroy otherwise obscured or unreachable targets.
“We want to get to the point where we have target seeking munitions. Counterintuitively, it lowers the cost-per-kill. These will be expensive munitions, but when you have the confidence that it's going to seek and destroy the target you’re shooting at, it certainly lowers the number of munitions you have to shoot at it,” Maj. Gen. John Rafferty, Director, Long Range Precision Fires Cross Functional Team, Army Futures Command, told Warrior in an interview.
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Course correcting munitions can also massively speed up the speed of attack, as a target can be hit faster and with precision without forces needed to bombard or overwhelm an area with artillery fire.
“It helps shrink the sensor-to-shooter timeline. You need a certain level of fidelity. You need to know that the target is what you think it is. You may not have to have all the specifics that add extra time for analysts. We can close the sensor to shooter loop in a much more timely fashion which is so important, but these targets often require munitions that can course correct,” Rafferty said.
Instead of being limited or confined to a standard guided-round trajectory, which descends in direct and known fashion, the “shaped trajectory” round can be pre-programmed by an observer to perform a “high-G-U-turn,” altering its course to destroy obscured or hidden targets, developers explained to Warrior.
“The projectile itself has fins and canards that enable it to steer,” Rafferty said.
Therefore, should a high altitude drone beyond the range of enemy ground fire use high-fidelity cameras to find a hidden target on the other side of a ridge, a datalink can send the real time video to maneuvering, ground-based command and control with mechanized units in position to fire a “shaped trajectory” course correcting round and destroy the target. This not only greatly shortens the sensor-to-shooter time but greatly improves survivability by enabling stand-off range precision attack beyond-line-of-sight.
The Army is already using some of its “shaped trajectory” Excalibur rounds as part of an ongoing process to explore and further develop a family of advanced 155mm artillery rounds designed to extend range, change course in flight to hit hidden targets, attack moving targets and tailor blast effects to destroy enemy armor.
Rafferty explained that, as part of this broad effort, the Army is also developer an enhanced lethality version of Excalibur, called “Hit-to-Kill” which will have a target seeking sensor and get out to those extended ranges using maneuverability to course correct and steer towards the target to destroy it.
Kris Osborn is the President of Warrior Maven - Center for Military Modernization and the Defense Editor for the National Interest. Osborn previously served at the Pentagon as a Highly Qualified Expert with the Office of the Assistant Secretary of the Army—Acquisition, Logistics & Technology. Osborn has also worked as an anchor and on-air military specialist at national TV networks. He has appeared as a guest military expert on Fox News, MSNBC, The Military Channel, and The History Channel. He also has a Masters Degree in Comparative Literature from Columbia University.