The Army High Energy What ‘engaged’ means? Has HEL-MD actually destroyed all those targets? – subscribe to find an answerMobile Demonstrator (HEL MD) underwent multiple test events between Nov. 18 and Dec. 10, at White Sands Missile Range, engaging more than 90 mortar rounds and several unmanned aerial vehicles in flight.
The HEL MD is being developed to show directed-energy force-protection capabilities against rockets, artillery and mortars (RAM). It is also intended to protect against unmanned aerial vehicles (UAVs), and cruise missiles. These present a broad target set for the system’s target acquisition system, considering the wide variability of target velocities, maneuverability and radar signatures.
Mortars travel at low velocities for short ranges in high-arching trajectories. Artillery shells fly much faster, at a lower trajectory while UAVs fly slow and present an extremely low radar signature. Cruise missiles, on the other hand, often fly at subsonic speed but are hidden from radar detection for most of their flight path, as they usually fly at very low altitude. According to officials at, the integration of the multi-mode radar in the tests enable the developers to acquire both target data and provide intercept computation for future integration in laser weapon systems. The Boeing Company is the prime contractor for the HEL MD program.
Initial system effectiveness was proven through low- and medium-power test demonstration that took place in 2011. Currently under Phase II High-power testing, that have now been concluded at the High EnergySystems Test Facility on White Sands Missile Range, the recent testing utilized a 10-kilowatt class laser. The 3 year program began September 2012 and is expected to last through 2015. In the future, a 50-kW class laser will be integrated into the HEL MD platform, officials said. The 50-kW laser is scheduled to be upgraded to a 100-kW class laser in subsequent demonstrations, they added. As part of the planned enhancement the supporting thermal and power subsystems will also be upgraded to support the increasingly powerful solid-state lasers, according to USASMDC/ARSTRAT officials. They said these upgrades will increase the effective range of the laser or decrease required lasing time on target.